Updated Shack - Episode II

Episode I - Episode II

I thought I was done making changes and additions to the shack, but I guess not. Just as summer arrives, so too, some new things have arrived at the shack.

The first addition to the shack is a Heil PR781 mic mounted on a PL2T boom, with a Pro 7 PTT hand button. The CC-1-YM wire harness connects everything to my Yaesu FT-991A. Using the equalizer settings suggested by Bob Heil, the audio reports are very favorable to this setup. Thanks Bob!

The second addition is KF7P combo antenna tower standoff arm which now suspends the center of my trusty old Barker & Williamson BWD-90 folded dipole antenna in a flat-top configuration at 40 feet. The antenna's heading is 140-320 degrees. So far, signal reports have been very good, but no DX attempts as of yet. Field Day, 13 Colonies and other special events, and POTA stations have been my focus for most of June. The 10 meter openings afforded fantastic QSO's all over the USA. A review of my log should help map out what the antenna is doing in it's current configuration and location.

The third addition is an MFJ-4712RC remote antenna switch between the BWD-90 folded dipole and the GAP Titan DX. It is interesting switching back and forth between each antenna and hearing their different characteristics. The folded dipole is far quieter and much better at pulling out even the quietest of signals. Love that Barker and Williamson BWD-90!

The Raspberry Pi computers also got an update. The 8G and 4G RPi's now sport an Argon Artik fan hat on top of a Geekworm heat sink armor case. Talk about nice! The fan hats are programmable for temperature and fan speed settings in custom configurations. I set mine to run 10% at 43 C, 25% at 47 C, 50% at 50, 75% at 53 C, and 100% at 56 C. With the huge Geekworm heat sink, the fan hat runs maybe every five minutes for a short time, even with the RTL-SDR dongle running the CPU with a constant 20-30% load. And with temps never getting above 43 C and the large fan running at only 10% every time it turns on, they are extremely quiet. No more worrying about heat on a Raspberry Pi 4!

The latest addition is the software package Barrier from the Raspberry Pi OS repositories. Super simple to set up and run, this package allows me to run my two (or more) desktop Raspberry Pi computers from one keyboard and mouse setup. Simply slide the mouse cursor to the edge of the screen, and it seamlessly goes to the other computer and screen. My small desk space just got a lot bigger with only one keyboard and mouse on it! Amazing! Open a terminal and run sudo apt install barrier on each computer. Select one as a server and the rest as terminals. Details here.

Episode I - Episode II

DX vs. MMDVM

For a while now, its been a little tough to get regular DX the old-fashioned way. Aside from that, FT8 works fairly well on 20m, but that's not for everyone, and it pretty robotic and impersonal. There isn't enough people on HF DV like the FreeDV 1600 and 700D modes, so it's less than a thrill right now.

That being said, there is hope. There has been a tremendous increase of activity on the MMDVM front. With new gadgets hitting the market as fast as baby rabbits, even the Tech hams can now talk around the world, and on an HT to boot! Yeah, it's not like the traditional and personally rewarding "contacts" like we are used to, flexing our RF muscles in cunning and calculated ways, but the end result is the same. Hams talking to hams around the world, and how cool is that!

So my FT-991A isn't used quite as much right now for DX, but the FTM-400XDR and FT-70D are barking up a storm from my ZUMspot and a few connected Yaesu WIRES-X repeaters in the area. My favorites right now are America Link and MNWis. Ride the wave, baby! But if the internet goes down, make sure you are squared away in your own shack. Independence is highly rewarding!

ZUMspot Nextion

Ah, the awesome ZUMspot, a digital voice door open to the world! How fantastic it is to talk all around the world with no static and no noise, like everyone is in the same room! Very cool! Between all the modes of digital voice, I have to say my favorite is YSF C4FM for its exceptional voice quality. My second favorite is DMR, but this requires getting used to the frequent "R2D2" picket fence sound.

The thing about the ZUMspot - and many other hotspots - is there is no display. It has the Pi-Star on-board html software, but to see the station information requires using a second device. But since this technology is fairly new, it is evolving very quickly. This is a good thing.

Riding along with this forward momentum, I'm now exploring computer programming for Raspberry Pi, and designing programs for the Nextion display. As it goes, I now have an awesome 3.2 inch Nextion touch display programmed and connected via USB to my ZUMspot. OMGoodness! It is, yes, AWESOME!

Next? Maybe program links to QRZ on the call sign...

Here Spot!

As I said previously, my home, mobile, and HT radios are all Yaesu with but one exception, that being a recent purchase of a Tytera MD-390 HT for DMR.

For several years now, I have been gaining interest in VoIP and digital comms in general. A Yaesu HRI-200 WIRES-X node might be pretty cool, but to my understanding, I would have to dedicate a Windows computer and a Yaesu C4FM radio like my FTM-400XDR. That is a bit more investment than I am willing to commit to given I don't even know if I will like it, so I began searching out other VoIP solutions.

After a bit of research, I decided to purchase the ZUMspot RPi kit which includes the ZUMspot-RPi UHF board rev. 0.4, Raspberry Pi Zero Wireless, and a micro SD card programmed with the Pi-Star software image. I also bought a layered case to keep it all safe.

After getting it assembled into the case, and setting up the WiFi and software, my first impression  was, "This thing is awesome!" Talk about easy to set up, this was so quick and simple. And how does it work? Fantastic!

One of the first "rooms" I connected to was the FCS00290, America Link WIRES-X. Immediately I hear clear, crisp, full-quieting digital voice from fellow HAMs in Australia, Japan, England, and Wales. Very cool! The one problem I had, though, was feeling as though I was cheating or something. Having a QSO on the internet just isn't the same as a QSO using only my own equipment, but man, it sure is interesting. Effortless QSOs with people all over the world. Who'd a thought!

And the ZUMspot is smaller than a 1 inch cut-off from a piece of 2x4 stud! Totally awesome!

More later...