Tag: js8call

It’s Good to be SEEN

Saturday, 09 March 25, I made the two-hour trip over to Bessemer, AL to attend a SouthEast Emergency Network (SEEN) meeting. The meeting was to start preparation for an upcoming Field Training Exercise (FTX) in April. I was here to support my friend and SEEN founder Billy N4WXI.

Billy started SEEN a couple of years ago to serve his local area in case of a communications emergency using GMRS. It has since grown into a service covering the Gulf Coast States including Georgia. These are the States most affected by hurricanes. Hurricanes when they make landfall can cause extensive damage over wide areas. The focus of SEEN is to provide communications during the first few days of a disaster or until government agencies can recover their communications. SEEN is also affiliated with the American Radio Redoubt Operators Network (AmRRon). This affiliation will allow SEEN to pass messages from the southeast to AmRRon to anywhere in the USA.

SEEN primarily uses digital modes to pass traffic because it is quicker, more resilient to interference, and more accurate. Billy feels the main role of SEEN is to pass health and welfare traffic to connect families and friends inside and out of the disaster area. SEEN uses 3 apps/modes: FLdigi, JS8CALL, and VARAC. Right now, FLdigi is the heavy lifter, it has multiple modes and is used by many organizations. This allows cross group communications. The second is JS8CALL. JS8CALL is a slower but more robust and because of its excellent weak signal characteristics, it is used when nothing else will work. VARAC is the new kid on the block and has a lot of promise. This app uses VARA which is also used by Winlink. It has pretty good weak signal characteristics, but speed and automatic error correction are its strong points. A message sent through FLdigi using a mode like MFSK32 can take 5 minutes. Using JS8CALL can take 10 minutes or more. VARAC using VARA can send the same message in about 30 seconds. A good part of this meeting was spent getting folks up to speed on these modes. These are the ones that will be used during the upcoming FTX.

One of the topics talked about me sending Billy an intelligence brief from my mobile using VARAC on 40 meters. That story can be found here: KK4Z SEEN FTX 2024. The radio install can be found here: KK4Z mobile install.

As with any ham radio related meeting, the topic turned to equipment and gear. Some folks were thinking about using a QRP radio for the FTX. Both Billy and I recommended against it. There are good reasons not to and I will name a few: 1) digital modes have a high duty cycle when compared to SSB and CW. This causes the radio to heat up quicker and because QRP radios are small, there is not enough heatsink to mitigate the excess heat. The radios overheat and then automatically reduce power or shutdown. I have done this twice with two different QRP radios. They have their place, but not with EmComm. 2) Power. The primary purpose of EmComm is to get the message through, this is not a contest of how low you can go. You can always turn a QRO radio down but you can’t turn a QRP radio up. With a big radio like an IC-7300, I can run digital modes at 40 watts all day long and the radio will not even get warm.

Antennas. Again, the purpose is to get the message through. Put up the best antenna you can. Bigger is better. Your antenna in the field will not perform the same as your antenna at the home QTH. The only way you will know how your field system works is to take it out to the filed and use it. When I go on my trips, I use the same gear as I would for an actual deployment. I have 1,000’s of contacts from the field. I know my gear. A comment was made that big radios use more power than a QRP rig. True but that is easily resolved with a bigger battery. You need more juice to run that laptop anyhow. I did a test when I got home last night and checked a couple of my radios current usage at idle. My IC-705 drew 0.21 Amps, the IC-7300 drew 0.83 amps and the FT710 drew 1.28 amps. My main EmComm radio for the field is my 7300. Remember, you are most likely not going to move your EmComm gear far so weight/bulk is not a problem. You need the power and you need the heat dissipation.

To quote Leroy Jethro Gibbs “Grab you gear, let’s go”. Take your radios out to the field often. I try to get out 6-10 times a year to include both Field Days. Know your gear, know how it works. If you manage to get out, get at least 20 miles from the home QTH. That is the minimum distance that is too far to return home to get something you forgot. Learn to make do, improvise, adapt and overcome. Most of all have fun. I do a lot of Parks on the Air (POTA). POTA activators, know their gear because they get out and use it. Stay safe 73- Scott

Winter Field Day 2025

It was another fun Winter Field Day. Our club, we like to do 3 things: 1) we like to talk, 2) we like to eat, and 3) every once in a while we like to talk on the radio. This year was no different. We had a lot of fun, ate good food, and played on the radios. I think it’s the non-competitive spirit that helps us brave the cold weather. And it was cold this year with temps in the 20’s and 30’s. Not only does this tax our physical comfort, it also taxes our equipment.

Coax cables and extension cords were stiff and fingers went numb but we managed to get 4 stations on the air. I operated separate from the group to try to Get multipliers on JS8Call. I also copied the WFD bulletin and used Winlink to send and receive email. We had one member attempt to make a satellite contact and while he could hear other stations, it appeared no one was connecting. This year we ran QRP. Which was fun. Let me run through the gear and tell you how things worked.

The antenna this year was a 73’ inverted L with the vertical leg at 20 feet. This had a 60’ counterpoise connected to 1.5 KW Palomar Engineering 9:1 UnUn. I use the bigger UnUn because times when I run higher power (up to 40 watts) using digital, smaller UnUns get warm and saturated. This antenna works well down to 160 meters. I made contacts on different bands out to the west coast. A fail I had was I used a Chameleon RF choke next to the UnUn. It blocked all of the signal to the radio. Once I removed it, things were fine.

The radio was my new Yaesu FT-710. The radio worked well with no real issues. A quirk of the radio is the AF cuts the volume off louder than other radios. Sometimes when I am operating digital, I like to turn the audio volume real low so I can just barely hear it to keep tabs on what is going on. With the FT-710, it cuts off the volume while it is still louder than I like. Not a deal breaker. One of the benefits of operating a big radio QRP is the controls are easier to get to. While I prefer the ergonomics of Icom radios, the FT-710 is still pretty good. Another quirk with the FT-710 is the waterfall. It is not averaging like other radios, you have to adjust it manually. Overall, the radio performed well and compares favorably with the IC-7300. Either radio will equally get the job done. This radio feels more refined than my first one. It will be going on several more trips I have planned.

FT-710 accessories. I got the tuner issue worked out and my LDG tuner is playing well with the 710. I added Portable Zero rails which not only protects the sticky-outy things, but gives extra finger holds. I consider the rails a must have for portable big radios. Heil Proset Elite. I had to buy another headset for the FT-710 and the Elite was on sale at HRO. My Icoms use an electret mic which requires power. I already had an adapter from when I owned an FTDX10. I’ve been using Heil products for 25+ years and they are my goto. Mouse. I bought a Logitech M310 mouse to go the FT-710 thinking it might be easier to navigate through the menus. However, once I got the radio setup I was only changing a few things and found I didn’t use the mouse at all. I will probably not use a mouse with the 710 and I already found another use for it.

Maestro Evolve III laptop. I think I paid $122 for it. It works okay. It’s not zippy fast but all the software I used worked. It does appear to be RF sensitive though. During transmit, the mouse would freeze and sometimes the app window would close and open. What do you expect for a hundred bucks! One thing I did find annoying was the track pad. It was overly sensitive and would often treat a light touch as an “execute” function doing something I didn’t want it to do. My solution is to take the Logitech M310 mouse and use it with the Evolve III. A cool feature is I can run the Evolve off of my radio power supply or battery. Less “stuff” to deal with. The power plug for the Evolve also fits older Icom and Kenwood HT’s. The Evolve worked with my GPS receiver and I was able to easily sync the time for JS8Call. I will be taking this little laptop out again.

JS8Call. I think this will be the last time I use JS8Call. I was never fond of it and running a contest with it is almost a nightmare. For WFD, it doesn’t sync well with ACLog. People would send their Class and section info out without attaching a call sign to it so you would get something like 1O OH… and nothing else. That would be okay if only one person does it but when 2 or 3 others do it at the same time, you don’t know who is who. That and there wasn’t really enough JS8Call stations on the air to make it worthwhile. CW was the same for WFD. There were other contests going on. It appears the money maker for WFD is SSB. Which is interesting because the EmComm community relies heavily on digital modes.

As a group, we had a lot of fun. We always enjoy getting together. I had fun and I got to test my equipment. It is reassuring to have the knowledge that your equipment is ready. Even when I go on one of my FunComm trips, I load things up and go. I don’t have to check them because I already did. Final thoughts? Listening to the CW contests over the weekend reinvigorated my love for CW. I have been away from it while getting up to speed with MARS and SHARES, but there is still something to be said for the simplicity of me and the key. Hopefully, this will be a better year than last year, and I can get back into the swing of things. Stay safe, stay warm es 72 de Scott