Howdy! This post is one that’s been in the drafts list for a hot minute, but I took a trip to NE VT to visit a partner and on valentine’s day we went out in the woods behind her place to radio for a couple hours. After a hike that seemed much longer up hill than down we arrived a higher spot with a clearing that would allow me to set the Superantenna up. I wanted to test my new Yaesu VX-6R with a Mobilinkd TNC3+ for APRS operation. I was hoping to make some contacts with Canadian stations since I was less than 1.5 miles from the border on the hike, but alas I don’t have something set up right.
To add a bit of fun the shoulder strap on the Superantenna bag failed as seen in the photo below as we hiked up. Unfortunately that meant we had to hand carry the unit up and back down.
QRP station set up in the woods of Northern VTHF radio set up for 20m in 15-20F weather depending on the cloud cover.
After getting the setup ready to rock I tried some phone operations on 20m SSB, but was ultimately not able to make any contacts despite being able to hear a number of other stations. There was a contest going on so it was hard to reach other stations. I haven’t been having a lot of luck with the Superantenna lately apart from using for SWL. I kept the 4.5AH Bioenno battery wrapped in a warm shirt within my black Chrome bag to keep it as warm as possible rather than leaving it in the ammo can. I just ran the power cable out of the top of my bag and left it rolled up when we found the spot to set up. The only ill effect the cold seemed to have on the TX-500 was that the LCD screen was a touch slow to respond to changes, but I was able to tune to stations without issues. I was surprised not to see a bunch of frequency drift despite the weather.
Yaesu VX6R and Mobilinkd TNC3 on duplexer for APRS.
I used the VX-6R with the Mobinlind TNC3+ in conjuction with a duplexer going to the Superantenna with a 2m load coil set up.
Superantenna and Chameleon Mil Whip 2 set up for 20m and 2m operation
In conclusion I made no contacts whatsoever and it was cold as hell, but it was a fun hike/bushwack and my winter gear held up very well against the cold. I’d like to try this again someday, but with the trail friendly 10/20/40m endfed. I also have more experimentation left to go to get my Mobilinkd TNC3+ working properly to do APRS. As a note it wasn’t nearly as difficult to deal with the Superantenna ground plane wires as I thought it might be. The main problem I had was that I’d wound them in a way that allowed them to get tangled up and deploying them was difficult. Rolling them back up wasn’t too difficult even when the sun was behind cloud cover.
It’s been a while and this will be a big post! My partner and I were able to go camping over the weekend, and if you’ve read any of my blog posts you won’t be surprised that I took the opportunity to practice some comms and off grid operating. I wanted to work HF, do some shortwave listening, and see if I could do any UHF/VHF communications. Additionally I wanted to run off of the 100AH battery box for a couple days to see how well it held up under constant use. This is also the first camping trip I brought the speaker stand antenna mast setup on.
On the way out I ran APRS with the Kenwood TM-D710G and the COMET-NCG CA-2X4SR antenna that mounts on the hood of the 4Runner. I noticed that on the way out that I had APRS coverage nearly the whole way out.
The first night we arrived late so I did a bit of SWL. I mostly got Radio Havana Cuba, Radio Nikkei, a distant station broadcasting in Mandarin, and Radio New Zealand International.
The next day I set the antenna up following a fun walk in the woods below the camp site. Most of my work on HF was done using the usual Endfedz Trail friendly 10/20/40m antenna. I strung it between the 4Runner and my portable antenna mast. I also added a 6m end fed dipole to the setup to see if I could reach Kevin, K7AJK from my camp site on the Lab599 TX-500. We had no luck. I wasn’t actually able to make any voice contacts on 20m with this setup even running at 10W, but there was a contest on the band so it was both congested and I suspect folks were running at fairly high power levels to make contacts. As you’ll be able to see from photographs I did a little hack with a stick I found to push the antenna higher off the ground on the truck side. It was especially helpful in preventing the hatch back from striking the antenna.
Guyed antenna mast with two antennas addedFound piece of wood used to push the antenna higher off of the roof of the 4RunnerThe Trail Friendly Endfedz is strung along some paracord to prevent damage to the antenna if the mast blew over.
After a few hours of having no success running phone I decided to switch to packet. Moving the radio into the vehicle reduced the SWR and allowed me to run the entire setup from the 100AH battery since I had used the 4.5AH battery quite a bit for SWL already. I had also been simultaneously been running my 2m rig and APRSDroid on the tablet connected via Bluetooth to the mobile radio with a Mobilinkd TNC3+. I was able to send a number of text messages back and forth between friends using SMSGTE, which was nice given the complete lack of cell service. At this point I was still using the antenna on the truck.
Lab599 TX-500 connected to the off grid Raspberry PiTablet running JS8Call100AH battery box connected to the Kenwood TM-D710GA in the vehicle, the Lab599 TX-500, and some lighting.
After quite some time operating on digital I decided to test some configuration changes I made to js8cli to increase the accuracy of maidenhead coordinates I was submitting to APRS-IS via Internet-connected stations running JS8Call. I had some pretty good luck as my position was accurately reported.
JS8Call screen shot showing a 5-level maidenhead position set via js8cli running an daemon modeMy position as displayed on aprs.fi
Apart from all the fun I had on HF, and walking around the forest with my HT (where I was reliably digipeated at 5w) I also figured I’d try to see if I could hit some of the repeaters in the Portland area, so I swapped the vertical antenna on the vehicle for my collapsable J-pole and speaker stand antenna mast. Much to my surprise I was actually able to get into the repeaters in the Portland area at 5w, but it was a bit sketchy as sometimes they wouldn’t key up. Apart form that I could get a bunch of APRS stations and digipeaters as well as some folks on the 2m calling frequency. I actually ended up having much better luck on 2m than on HF this time around.
Kenwood TM-D710GA on the dash of the 4RunnerThe 4Runner antenna hood antenna swapped for an elevated J-Pole on the speaker stand mast.Using paracord to lash the antenna to the bumper of the truck
As you might have noticed from the pictures above I ended up moving the antenna because winds were getting higher and I was afraid the antenna might move side-to-side on the bumper’s tubing. I ended up shifting it toward the driver’s side where I could secure it to both the tube running horizontally and to the spot where the tube split, meaning the mast wouldn’t shift from side to size because it was secured with the paracord on both axes. since the antenna mount on the vehicle uses the same connector as most of my coax and the J-pole I was able to just connect the J-pole directly to the existing cabling in the 4Runner. Easy!
For the entire trip apart from doing some SWL with the TX-599 on its 4.5AH battery away from the truck and by the fire ring I ran all the lighting and radios from the 100AH battery box. We charged the tablet, my partner’s phone, and my phone from the battery box as well. We only drew down to 96% in two days. One day had a lot of heavy radio usage as well so that’s all a good sign.
Some witch’s butter we found on a stump near our camp site
Hello all, after leaving my last post in draft for a few months and not finishing it I figured I’d move right along and write another one! I had already set up my superantenna last night to do some SWL, but because the space weather is so good I decided to set up the Par EndFedz EFT-10/20/40 antenna to do some work on 20m. For today I used the arborist’s weight to hang the far end of the antenna in a tree in the back yard and connected the transformer end to the deck. The antenna was an estimated 20′ off the ground, and was oriented diagonally SE to NW across the yard. I had intended to run the antenna north to south but was unable to because the antenna was too long to be stretched from the deck to the right tree. I ended up moving it to another tree diagonally across the yard.
I made a partial contact with a Canadian ham out of Victoria, BC that suggested the solution to someone interfering with him was to “invoke the 2nd amendment” and solve the problem with a gun. Following that gem of a first partial contact of the day I decided to get off phone at that point and start operating JS8Call on 20m.
I connected the Raspberry Pi to the battery and Lab599 TX-500 and fired it all up. One of the first things I noticed was that the system clock was wrong. After using “timedatectl status” I saw that my hardware clock was right but on boot it failed to update the system clock. At that point I did it manually (“sudo hwclock –hctosys”). Since I had connected the Pi to the wifi at the house the previous night to run updates I was able to set my tablet up in the kitchen and leave the radio outside while I operated as there wasn’t enough cable to bring the radio inside. The family was around inside and it was considerably warmer in the house than it was outside so I could make QSOs and still talk with everyone that was inside. That’s one of the nice things about using keyboards and a slower mode like JS8Call – you can still talk with people while messages are being sent and received.
I made a few contacts but had a nice long QSO with W7SUA in AZ. Apart from that I was getting two way communications with stations over 1,800 miles away though they were generally automated requests for signal reports and locations.
Radio set up with Rasbperry Pi connected.Tablet in the kitchen operating the radio while it’s outside.Transformer end of trail-friend EFHW attached to the deckView of the antenna running from the deck to the tree.pskreporter.info screenshot showing stations that could hear mine throughout the day.
Hello all, it’s about time I wrote a post about my camping trip my partner and I took a couple weeks ago. I took my trusty Lab599 TX-500 kit, a couple 20W GoalZero Nomad solar panels, headset, and table/chair combo up camping with our “new” 4×4. I wanted to do some HF QRP and some handheld UHF/VHF operation while I was out. I brought some of the same portable furniture that I used at the beach last post since it worked out so well.
The view was pretty sweet for this one. The smoke from the wildfires made everything a bit more hazy but pretty great none-the-less.
View while operating
While operating HF I made a number of contacts, and the solar panels kept the 4.5Ah Bioenno LiFePO4 battery built into the HF QRP radio kit charged the whole day. The first HF contact I made was with Stefan, AF6SA who was working POTA in Eldorado Natoinal Forest (K-4455). His signal was 5/6 on at about 450 miles away on 20m. I also made a contact with VA3AAA, Stanley in Ontario, Canada. I was pretty excited to reach Ontario with a low power radio. That contact was also logged on 20m. I also made a contact with the K0GQ radio club in MO on 20m. All of these contacts were made between 5 and 10w using the Trail-friendly EndFedz EFT-10/20/40 antenna strung between a couple trees about 50′ apart and about 25′ above the ground.
I switched radios and bands to see if I could get into some of the repeaters in the Portland area (I could) with my Yaesu FT3DR and a Signal Stick antenna. I ended up on 2m and caught two hams on 146.520Mhz doing a SOTA activation: K7AHR and K7IW. I think they were on Lookout Mountain, but I can’t remember and didn’t properly log it. I was running 5W for those contacts.
Howdy and welcome back! I spent the day at Rooster Rock, a clothing-optional beach on the banks of the Sandy River in Oregon. Since I burn easily I got a cheap tent from Target to get very sandy and to keep me and my gear safe from the sun! As a bonus this specific tent actually has a pass through for cables in the front corner to the left of the door which is pretty great for running solar panel connectors and feed line. I didn’t have any successful contacts, but that’s not surprising given the difficulties I had tuning the Superantenna. I couldn’t manage to get a decent SWR on the QRP radio. The real point of the post is about portable shelter options that can keep you out an entire day even when you’re literally naked. This was able to keep me and the gear cool enough to keep going. Folding a corner of the tent up allowed the interior mesh to breathe away from the sun. In the picture below you can see through the door that the rain fly has been lifted.
We weren’t able to get the best spot but at least we got something out of the way on a path and had enough space to set the tent up. I had enough clear space to keep the solar panels going all day as well. They kept the battery kept everything charged and running. I tried to see if I could make any UHF/VHF contacts but I was in a gorge so I had very limited luck. I’m sure you’re just as shocked as I am. I then tuned the Superantenna as best I could for 20m and tried to make some contacts but I wasn’t getting out. I heard a bunch of stations on the east coast and in the midwest including participating in a New England radio event or QSO party for the 4th of July weekend. I wasn’t able to get out to anyone though. In addition to those stations I could also hear but not reach Paolo IK5SRF in Tuscany, Italy. Paolo had quite the pileup going.
A view of the radio setup, the table, and chair. This three-legged chair is actually pretty comfortable.
My conspicuously-empty log book with only notes and the radio.
At the end of the day breaking the tent down was pretty easy. We were able to tear down the entire site and radio station in about an hour, have it loaded into the beach wagon and off we were. Much of that time was as usual rolling feed line so it’s not a pain to unroll later.
HF QRP radio kit, solar charging kit, antenna hanging kit
Howdy all! This is a new post about my portable QRP radio kit and it supporting kits based around my Lab599 TX-500. Its a fairly self-contained kit but doesn’t have a couple key elements included in the actual box. It doesn’t have any equipment to hang the included trail friendly end-fed half wave dipole or battery charging equipment. I’ll include those elements in this post as well, but they don’t live in the HF radio kit itself. This will be a long post so strap in!
The QRP radio kit
Let’s start with how the HF radio kit is built out. It’s based around a small ammo can I got at a discount store. I wanted to have a fairly self-contained kit that was water resistant and durable and I also wanted the ability to charge and use the battery with the ammo can lid closed to protect against water and dust and ingress. This is by no means waterproof but I wanted to make sure it was at least splash and rain resistant since I do a lot of operating in the Pacific Northwest region of the US which is notorious for its rainy weather.
DC barrel connectorsTesting charger and connector fit
The kit’s battery is a 4.5Ah Bioenno LiFePO4 pack. In order to make sure I can leave that battery in the kit I had to devise a way to connect it to an external charger through the can. After calling the folks at Bioenno I was able to determine the barrel connectors included on their batteries are 5.2 x 2.1mm connectors. The panel mount water resistant connectors I used have 18 gauge wire that supports a max of 10A at 12V DC. I was also able to track down a pack of screw-on terminal barrel connectors as well to connect the battery inside the ammo can. This setup also allows the battery can stay inside the case while the radio is being operated which is good for water and dust resistance. I recommend testing your connections before you drill for both polarity and appropriate voltage levels. In my case they worked fine so I proceeded…
DC panel mount connector installed in case and insulated screw terminal connector installed
The first consideration in installing the connector is making sure the connector doesn’t interfere with the mechanism on the case that opens/closes it. After that you have to worry about the connector and wire on the inside of the case interfering with items in the case when it’s packed. I decided to place the connector in such a way that the radio laying on its side against the wall of the case would rest against the installed connector. Using a simple metal drill bit I was able to make a hole big enough for the panel mount connector just below the latch mechanism. I then removed any metal burs from the drilled hole and any turnings from the inside of the can to prevent rust, scratching, and short circuits. After installing the panel mount jack and the rubber water/dust cap I just screwed the positive and negative wires into the barrel connector that will hook up to the battery. To ensure no small metal parts caused a short I used hot glue to insulate and strengthen the connection points on the screw terminal barrel connector.
4.5Ah battery installed in the corner of the ammo canBattery connected to external DC barrel connector
The next step is adding the battery to the ammo can. I wanted the battery to be semi-permanently mounted in the box so I opted to use 2 x 4″ Velcro strips to secure the battery to two surfaces in the box. the link for those strips is to Amazon but similar strips are available at many stores and websites. The optimum position for the battery seemed to be in a corner where I could install Velcro strips on two of the faces of the corner making it removable without drilling more hols in the can or dealing with metal and glue. Fit testing your equipment is also important when deciding where the battery will be installed. I did that by attaching the loop side of the 2 x 4″ Velcro strips I cut to size to the battery but not removing the plastic that would go on the hook side of the Velcro intended for the inside of the can. Once I was satisfied with the location of the battery and my ability to pack the kit I removed the plastic backing from the hook side of the Velcro and stuck the battery in against the back and corner of the can. I was then able to connect the pass through electrical connection and make sure everything worked properly including polarization of the battery connection. Failing to test the polarity could result in damage to equipment or even potential issues that would compromise the battery. It should also be noted that the radio’s rubber feet make the fit against the battery very tight.
Kit contents + Bioenno 2A AC-DC charger
Here’s the contents of the kit. Left to right, top to bottom.
Ammo can body with battery and pass through DC cable installed.
Plastic bag to hold small adapters and connectors.
Ammo can lid
Bioenno 2A AC to DC charger for LiFePO4 batteries
Lab599 TX-500 speaker mic and Raspberry Pi 4 dedicated to the kit
2x 25′ RG-174U cables w/BNC ends (multiple segments of shorter cable allow me to make the shortest connection possible for a given deployment)
15′ RG-174U cable w/BNC ends
DIY REM/DATA GX12-7 connector for the TX-500 with a 1/8″ TRRS end connected to a Millso TRRS USB sound card
TX-500 USB CAT cable (stock cable that comes w/radio)
Par EndFedz trail-friendly EFT-10/20/40m antenna on winder w/BNC connector. This has some red paracord loops attached at each end of the antenna for easier connection to support lines and for visibility.
Powerwerx USBbuddy w/spliced-on USB-C connector for the dedicated Raspberry Pi 4. The splice minimizes cable length for less voltage drop and excess cable.
TX-500 radio w/3D printed GX-12 series connector dust caps caps installed
2x DIY 5.2 x 2.1mm barrel connector to Anderson Powerpole adapter cables
2x 6″ USB A to MicroUSB cables to connect devices for charging
2x 6″ USB A to USB C cables to connect devices for charging
W2ENY headset adapter wired for a dynamic mic. (The included adapter with the TX-500 was defective from the start in such a way that I’d have to significantly shorten the cable, and I also wanted to use a different PTT button and my existing Heil headset with a dynamic mic element)
2x BNC barrel connectors to connect feed line segments together
1/4″ to 1/8″ TS adapter for PTT switches
1/8″ to 1/8″ TRS to TS adapter for ear buds connected to the speaker mic
90 degree male to female PL-239/SO-239 connector (convenience)
BNC to PL-230/SO-239 male adapter (for connecting to most of my other antennas)
DIY 1/8″ TS PTT button made from spare parts I had lying around
Putting the kit together layer-by-layer is pretty easy. The below photos illustrate how the kit is packed in 3 layers – bottom to top.
The first layer at the bottom of the kit – battery, radio, Raspberry Pi, RPi USB C power converter, adpater/connector bag, radio power cable, Powerpole to barrel connector adapters, TX-500 data and CAT cable. The middle layer of the packed kit – 2x USB buddies, all coiled feed lineThe top layer of the packed kit – Speaker mic and its cable coiled around the trail-friendly antenna
Solar power kit
Now that we’ve covered the kit contents let’s talk field charging with solar power! The solar charging system I typically bring with this radio uses one or two 20W Goal Zero Nomad 20 folding solar panels. Those attach to a Buddipole PowerMini charge controller and power meter. Much of this solar charging kit is composed of cables, but it’s designed to be used with a number of my radios, batteries, portable lights, and USB device chargers.
Two solar panels and the charger kit
Depending on the deployment I may bring one or both solar panels with the charger kit, or sometimes I’ll just bring the charger kit for power metering to understand how much I’ve drawn my batteries down and at what rate I’m using power. You can check the Buddipole PowerMini’s product page to learn more about it and ways it can be used. In some cases with good sunlight a single 20W panel can provide around 1A (typical max power I’ve gotten from the panels), but in overcast conditions I might use both panels to get 1A peak power. It also might be a good idea to bring both panels to charge at about 2A. It’s especially nice if I expect to charge a phone/tablet and run a radio with a Raspberry Pi if I’m using data modes.
In the above photo you can see the two Goal Zero Nomand 20 solar panels. One of them is staged to show the top view of the panel and the other the bottom view. Each panel has a kick stand to hold itself up at various angles on the ground, cable with an 8mm plug, a USB charging port, and holes in the corners of the panel to suspend them. The Nomad 20s fold open to reveal three solar cells.
Charger kit openedDisassembled charger kit
The solar charger kit consists of a Condor MOLLE compatible pouch that has a detachable main pocket which allows you to install and remove the pocket without disconnecting the MOLLE part from the webbing, and also has a loop for easily suspending hanging the kit from something. The kit contains the following items:
Condor MOLLE compatible pouch w/ paracord loops to hold and suspend the Buddipole PowerMini
Condor MOLLE compatible pouch attachment platform. This comes as a single unit with the pouch listed above.
West Mountain Radio PWRNode (4-way Anderson Powerpole connector)
DIY MC-4 to Anderson Powerpole connector (for a 100W solar panel not pictured here)
BuddiPole PowerMini
DIY 2.5″ Anderson Powerpole jumper cable w/10 GA wire (rated for 30A @ 12V DC)
DIY 6″ Anderson Powerpole jumper cable w/10 GA wire (rated for 30A @ 12V DC)
DIY 4″ Anderson Powerpole to Goal Zero male 8mm connector pigtail.
DIY 4″ dual Goal Zero female 8mm plug to Anderson Powerpole pigtail. This allows the two Goal Zero solar panels to be used simultaneously.
DIY 3′ Female Goal Zero 8mm to Anderson Powerpole cable.
You’ll probably notice there are a lot of seemingly redundant connectors and pigtails in this kit. There’s a reason I carry so many adapters around, and that is to make sure I can run as little cable as possible to achieve connections between system components. Being able to use shorter cables help limit voltage drop, but having the option to use a longer cable to connect the solar panels might mean I can stay in the shade and keep my solar panels in the sun. The short Anderson Powerpole jumpers included in the kit can help me connect to the battery or connect a PWRNode to the PowerMini. The Anderson Powerpole connectors on the side of the PowerMini don’t allow you to connect the PWRNode directly to it, and even if they did you’d lose two of the four connections on the PowerMini side of the PWRNode. In most cases this kit powers the entire radio doing phone and data, a phone and tablet, etc. Most of the time the equipment barely uses the battery while operating during the day and I have a full battery to use at night for the radio and lights.
Antenna hanging kit
Antenna hanging kit
Last but not least we have the antenna hanging kit. It’s great to have a radio and a way to power it, but if you can’t get your antenna where it needs to be it’s all for nothing. This part of the kit rounds off the portable radio station. It’s designed to work with a number of wire antennas I have – a Par EndFedz 6m antenna, the Chameleon EMCOMM III Portable, and the Par EndFedz EFT-10/20/40 trail friendly antenna that lives in the HF radio kit. In the case of the trail friendly antenna we require two points of suspension for horizontal dipole operation – the end of the wire antenna and the transformer component. Being in Oregon and setting up my radio station in the region quite a bit I frequently rely on trees as antenna supports, and thus also pack an arborist’s weight as part of my equipment to assist in hanging the line. It adds a lot of weight but is definitely worth it. Using rocks and other tree branches works but definitely comes with snagging risks and the possibility your line will come off of the wight you’re using to get the line up… especially when it comes to rocks. I carry 4 aluminum tent stakes with paracord loops and quick links for attaching line. Those are bound during transport by a piece of paracord I tied together to make the clanking of the tent stakes go away and to keep them from flopping everywhere. There are four aluminum tent stakes in the kit because I might want to anchor my Chameleon EMCOMM III in 3 or 4 spots depending on antenna configuration. I have two 75′ high visibility paracord hanks wound around Chameleon wire winders that can support two ends of antennas that are in a horizontal dipole configuration. Each hank of paracord has a quick link attached for connecting to the ends of an antenna or suspension point, and the arborist’s weight for deployment. I can leave one of the paracord hanks behind if I want to set an antenna up in a configuration that only requires one suspension point like an inverted V. I added a small loop of paracord to the Chameleon wire winders in one of the corner holes to take the weight of the assembly off of the elastic band that wraps the paracord when the hank is being stored or transported. The locking carabiner is used to hold everything together, clip the kit onto something like a backpack, or hang it from a pocket during setup. The specific carabiner I’m using is probably overkill but I had it laying around so I used it. There’s also another loop of paracord attached to the carabiner which acts as a more comfortable carrying handle and for storage by hanging from a door knob.
The antenna hanger kit broken down to (most) of its individual components
Black paracord cut small into smaller pieces for use as a handle, 2x wire winder strain relief loops, and a keeper for the tent stakes (don’t ask me how I figured out how to tie that. I can’t really tell you how I did it except that I did a lot of experimentation.
2x Chameleon wire winders
6x threaded quick links (4 on stakes, 2 on the 75′ paracord)
2x high visibility 75 ft paracord hanks w/ 3M high visibility strip included for working on the antenna suspension at night
Tent stake holder assembled
Note the paracord attachment point run through the quick links that make sure they don’t come out of the holder or make a bunch of noise. Both loops of black paracord go through the carabiner, but if you remove the attachment point with the quick links from the carabiner it’s easy to just pull the quick links off.
75′ high vis paracord wrapped around Chameleon wire winder and set up for transport
This is a more detailed view of one of the two paracord hanks. Both are set up the same way. The paracord is wrapped around the Chameleon wire winder and is held on the winder using the built-in elastic band which is wrapped around the paracord and secured with the pictured notches. The quick link is attached to the throw/attachment end of the paracord, and the quick link is also attached to the small black loop of paracord to take strain off of the elastic band during transport. This design uses the quick link, black paracord loop, and plastic wire winder plate to take the weight of the assembly when attached to the carabiner.
Connecting it all
While this isn’t necessarily directly related to the composition of the kits I described above I decided to diagram out how the station is wired up for my typical use and add this section after I wrote the original post. You’ll note that some components are only used in data operations, and some are only hooked up when needed. For example, I won’t need the light unless it’s dark, I won’t want to use the Raspberry Pi unless I’m doing data comms or using the documentation server. In addition I won’t have any of the USB buddies that I don’t need hooked up at any time because they draw power, and unless I want that power to go to something I just won’t use it. If I’m deploying at night and don’t expect to stick around until morning I won’t deploy the solar panels and add the hassle of managing those additional cables and connections. In any case, this is basically how it’s all wired up for my typical deployments. Sometimes I’ll use different components such as a 100W solar panel instead of the 20s, or add a travel router and a USB buddy to the data deployment depending on my situation and available power/battery.
Wrapping it up
So, this is the kits! I don’t always use the trail-friendly antenna with this radio, but it’s what I include in the kit by default. I also use a Samsung Galaxy tablet and sometimes a customized travel wireless router in conjunction with this kit when I do data mode work to interact with the Raspberry Pi 4 in this kit and / or one of the other ones I have set up, but that’s a whole other post.
Good news everyone! I finally made a long-distance contact running QRP (10w) on SSB. I was able to complete a QSO with N8II in Jefferson County, WV on 20m during a WV QSO party from the top of Mt. Tabor. The distance between our stations was about 2,290 miles. I had been attempting to contact the station all day on and off since about 16:30 Pacific time. I was able to reach a couple stations in the Portland, OR area and one of them suggested that my portable antenna might be hung too low (at about 20′) and doing NVIS instead of getting out so I re-hung both ends of the antenna an additional 6′ higher and tried again. I had attempted to enlist K7AJK’s help to test my station’s audio to see if I was having RF feedback, but it seems he was in one of my antenna’s nulls. The next set of attempts I was able to nearly complete a QSO with N8II, but failed to get my full call and location across. I hit pause on attempting contact for a few minutes to attempt some other frequencies and 40m. After coming back and making another attempt I was finally able to make the contact with a bit of difficulty, but there you have it!
pskreporter.info showing stations that heard mine (yellow = 20m, blue = 40m)
As a side note I did some JS8Call work on 20m and 40m as well. The furthest signal report was about 2,000 miles away! Not bad for a portable QRP station.
Lessons learned:
A few extra feet of antenna elevation can make all the difference!
Minimal power can go a long way.
If you want to use a headset with a radio make sure you bring a PTT.
Two 20w solar panels did a good job of powering the entire setup until the sun got low enough that trees covered them. I barely used the battery in 5 hours of operation.
Don’t position your station under the feed line. It might cause RF feedback.
Bring extra water. I didn’t have enough for 5 hours.
6m endfed dipole attached to the portable speaker stand antenna mast.
Hello, long time and no post! Tonight I decided to test out an antenna a friend of mine, K7AJK, let me borrow which also enabled me to make my first attempt to work 6m! This antenna is a Par EndFedz 6m end-fed dipole, and it works on, you guessed it! The 6m (50-54MHz) band. This is my first attempt at working this band, and yet another attempt to make phone (voice) contacts with my Lab599 TX-500, a newer QRP rig which is capable of a maximum transmit power of 10W. With this antenna and band I decided to attempt to use single-sideband (SSB) for my phone contact as most of my digital communications and work use SSB. Since I’m working SSB instead of FM, the antenna should be oriented horizontally to ensure better signal propagation and better changes of making contact with other SSB stations. The kind of propagation I’m going for here is groundwave propagation, meaning I’m attempting to get my signal out over the ground to reach other stations rather than attempting to bounce it off the atmosphere as would be the case with other types of 6m propagation. To get the antenna up and off the ground away from the roof and gutters of the house I set my speaker stand antenna mast up with the “matchbox” end of the antenna connected to some guy wire eyelets on the dowel portion of the mast, and the other end attached to a post coming up from some raised garden beds. This got the antenna about 9-10′ off the ground and away from the gutters which is fine for a test run.
QRP radio tuned to the 6m calling frequency.
A good place to start when attempting to make contacts on a specific band is to choose that band’s calling frequency, or at least a region of the band that others using the mode you’ve chosen are likely to be. For 6m SSB the calling frequency is 50.125MHz, in the bottom half of the band. I use this handy chart by iCOM to keep track of what regions are used by operators, and to understand specific frequencies that have specific uses such as SSTV and calling frequencies. I parked on the 6m SSB calling frequency and called a few times with no answer. I enlisted the help of Kevin, K7AJK to see if he could use any antenna and tune his radio to the calling frequency. As I asked him to do that another station in Vancouver, WA that was about 10 miles away came in running 50W. As I began a QSO with the other station at 5W K7AJK’s station got the brunt of the power as it was nearby. Fortunately he had his attenuator on and even with a vertically polarized antenna it swamped the receiver. As that was happening I was able to drop power to 1W and then raise it to 2.5W. The station in WA was still able to read me at lower power levels, albeit I was scratchy. That bodes pretty well none the less. The radio also drew less than 1A at 5W of transmit power as measured with a Buddipole PowerMini that I hooked up. The radio drew about 0.13A receiving only.
QRP radio operating on a 12AH battery with an additional phone charger connected.
This is just a quick post about some light operating I did out in the forest today while getting some target practice in since I’m not really a sports person. The weather was fairly cold, between 35 and 40 degrees F with alternating rain and snow. This post is mostly about what running QRP in decent conditions can do. I set my Lab599 TX-500 up with my Superantenna / Chameleon Mil Whip 2.0 antenna combo and my offgrid Raspberry Pi and access point this morning to see how far I got out from the outdoor “range” we were at. I powered the whole setup with my Bioenno 40Ah LiFePO4 battery and threw my GoalZero Nomad 20 folding solar panel on just to take some of the load from the battery as it’s just a standard practice I engage in.
The idea was that I was going to try to run JS8Call at QRP on 20m for a few hours. The power levels I ran were 1w, 5w, and 7.5w (for a couple minutes) throughout the day. I generally settled on 5w as I was heard from the southwest, south, along the east coast, midwest, and AK. Bumping the power to 7.5w didn’t really yield any additional responses to my heartbeats so I reduced power to 5w and stayed there for most of the day. My furthest contact via heartbeat and “QTH?” commands was KC1GTU at FN41 (about 2,250NM away at 5w).
Setup photos:
Very messy setup
Lessons learned:
Make sure you set your grid locator correctly in JS8Call. Anyone seeing my station would see me at CN85qm, about 45 miles away from where I really was at CN85hs. (Update: JS8CLI solves this problem.)
I had the opportunity to spend a few hours in the Oregon countryside while my partner had a meeting. Naturally I decided to do deploy my new radio, the Lab599 Discovery TX-500 along with my second purpose-built digital comms Raspberry Pi. The other is used with my Yaesu FT-857D.
I began by setting my rig up in the trunk of my car. Since I wanted to at least simulate running off grid on battery I didn’t connect my radio to the car and opted to use my 40Ah Bioenno LiFePO4 battery. I had intended to bring my smaller 12Ah Bioenno LiFePO4 battery which was actually purchased for the TX-500 kit, but I had spaced it and left it on the charger. Despite the cloudy weather that is typical of Oregon this time of year I also brought my GoalZero Nomad 20 to see if I could extend my runtime even if slightly and to give it a good test. Every little bit of extra juice helps, but I only used 1.8Ah of battery the entire 5.5hr deployment! The solar panel did provide an additional 0.8Ah which is 44% of what the battery provided.
Solar panel on the car and facing south
Buddipole Power Mini and 40Ah Bioenno LiFePo4 battery.
The first antenna I deployed and ran was my Superantenna kit, but instead of using the titanium whip supplied with the kit I added the Chameleon Mil Whip 2.0 to get more efficiency and significantly wider SWR bandwidth. I tuned the antenna up for 20m using my NanoVNA and ran JS8Call on the TX-500’s dedicated Raspberry Pi… using my tablet as a keyboard and screen over VNC. I had a number of successful contacts from the Southwest to AK and managed to relay a text message to a friend in NM via an operator in-state running 9w!
Superantenna w/ tripod and Chameleon Mil Whip 2.0
I did try to make some SSB phone contacts but there was a contest going so I didn’t really get too far. As the sun started going down I noticed the 20m band was starting to close, so I tuned to 40m and the contest was still going on so I wasn’t able to make any contacts. It can be difficult to raise anyone during a contest because a lot of folks are talking and running high power so it’s very easy to be drowned out.
In general I also like to try more than one antenna or antenna configuration per deployment so I set up my Chameleon EMCOMM Portable III in an inverted “V” configuration with the center point hung using an arborists’s weight and some paracord in a tree. I was able to make some JS8Call contacts and was able to hear a lot of distant operators. Again, I was unable to make a contact using SSB phone despite the fact that the tuned inverted V configuration should technically be more efficient than a loaded vertical. I’ll need to do another test on another day.
