AmateurRadio.com

Playing around with DMR in Holland was fun. But back in Taiwan my brand new Tytera MD-390 would be totally useless. There is no DMR activity here (yet) and up till recently I was the first and only ham in Taiwan with a DMR ID (4661001).

Luckily there are little devices called “hotspots” and one of the most popular one right now is the DV4mini, designed by DG8FAC (Stefan Reimann), DG1HT (Torsten Schultze) and DJ0ABR (Kurt Moraw). The DV4mini is a tiny USB stick that can turn any PC into a hotspot for all the amateur digital modes: C4FM, D-Star and of course DMR. It does P25 and dPMR, too. Basically it is a router for your DMR transceiver. Ham radio purists will undoubtedly cringe at the thought of RF being routed via the internet, but this is 2016 and everything is connected to the internet, so let’s get over it.

Still in Holland Cor (PD0GHF) was again very helpful and invited me into his shack for me to check out his DV4mini setups. Yes, setups, because Cor is a man with a lot of radio equipment, especially in his trusty Volvo.For the DV4mini to work you need to hook it up to a computer, install the software, configure it and off you go. The computer can be your laptop, PC, but also one of those mini computers, like the Raspberry Pi. With a tiny 3.5 inch TFT screen you can make a very portable hotspot. Cor already made two of them.Unfortunately for me Cor didn’t want to part with one of his hotspots, but luckily I had already bought my own DV4mini. Now some of you may know I am not a big fan of the Raspberry Pi, but Cor’s setup looked very appealing. And then Dave (PD5DOF) gave me a 3.5″ TFT screen as a parting gift at the last VERON meeting I attended. So I sighed and ordered a Rpi from RS, which arrived in a couple of days. I ordered the Rpi3 because it is the first Pi with on-board WiFi, so no need to buy a separate WiFi adapter.

There are many ready-made images, with the DV4mini software already installed, available to download on the net. You burn an image on a micro SD card, insert it in the Rpi and your Pi will come alive. But of the 10+ images I tried not one worked on my Pi3, probably because they were made for the Pi2. The plain vanilla Raspbian image did work with my Pi3 and the 3.5″ TFT screen, but the DV4mini software wouldn’t work. The Ubuntu MATE image would work with the DV4mini software, but not with my 3.5″ TFT screen.

So after a week of fiddling around I took the latest Raspian image, installed the latest version of Mono (open source version of MS.NET) from scratch and then the special version of the DV4mini software for small screens. And because I did all that I can now present you with……

THE FIRST EVER DMR AMATEUR RADIO STATION IN TAIWAN…..As you can see I am connected to the reflector connecting all of Holland (4500). I can now take my MD-390, walk out of the shack, sit on the couch and be able to talk with all my fine friends back home, while being in Taiwan!

In Holland most repeaters are connected to the Brandmeister network. In fact, if you look at this map it is becoming the most popular network to connect DMR repeaters to in the world. The Brandmeister network has a dashboard at https://brandmeister.network/ and the good thing about this dashboard is that you can actually see if you connected to the network.Not only that, your most recent transmissions are also logged.Apart from QSOs with Dutch hams I have also had QSOs with the US, Sweden and Australia and they were real QSOs as well. Not much use exchanging a “59” when using DMR, is it now? For me this is most important as it allows me to break my isolation here in Taiwan by being able to have QSOs with ham friends from back home and also make new friends all over the world. I always thought that that was the essence of amateur radio. Am I right?

I went for a quick hike this morning before lunch to some remote farm fields not far from home. I worked France, Serbia, Kansas, Canary Islands and Russia. It was a beautiful, beautiful morning.

I started out on Hunkins Pond Road and hiked north up an old farm lane. Then I turned east on the old range road. This old road cuts straight through the woods for probably 8 miles. But just a short way up this road I came to David Swain’s hay fields on top of the hill. It’s a beautiful place. This view is looking east toward the Belknap Mountain range.

I set up the KX3 at the edge of the field and tossed my wire over a huge maple. I started out on 20 meters. The first station I heard was Bert F6HKA in France. He was working the Romanian DX contest. We exchanged 599s and a serial number. Next I worked a Serbian station YT1A also working the contest.

My third QSO was up the band a little with W0L. Jerry was working the Kansas QSO party and I sent 599 and NH. Then I listened around a bit to see how the other bands were doing. I finally settled on 17 meters where I heard a couple of strong DX stations.

EA8TL in the Canary Islands was calling CQ right at the bottom of the band. Jorge was very strong and we made a quick exchange. Up the band I heard Alex RK3ER also calling CQ. “Hello Jim,” he sent as he gave me a 559. He was 599 to me.

Now the sun was almost overhead and it was getting pretty hot in the field. I packed up and headed home for lunch after a final glance to the south.

Trevor Holyoak, KD7GHI, grew up in a house full of homemade gadgets that his dad made including clocks, a TV, and radios. He learned basic electronics from him, and practiced on a 150-in-one kit from Radio Shack.

“I watched him do CW and string wire antennas across the yard, and so I was aware of ham radio at a young age,” he said. “He built our first home computer, a Sinclair ZX81, from a kit and that got me started down a path that I’m still on today.”

Holyoak is a professional computer programmer and began creating Android apps on the side a few years ago.

“I got the idea to create the Ham Radio Podcasts app because I had already built a couple of other podcast apps for specific interests, and I discovered that there are a bunch of great amateur radio podcasts out there,” said Holyoak. “I put them all together in an app that makes it easy to listen to them. You can stream the episodes as you listen, or you can download them and listen to them later when you don’t have a data connection.”

A few of the twenty featured podcasts include 100 Watts and a Wire, ARRL’s The Doctor is In, Everything Ham Radio, Ham Nation, Ham Radio 2.0, Ham Radio 360, Ham Talk Live, and HamRadioNow.

Like many hams, Holyoak’s involvement in ham radio throughout his life has waxed and waned. “After a few years I became inactive, although I still kept a radio on hand in case of emergency,” he said.

It wasn’t until last year, when he was asked him to spearhead an emergency communications effort in his local area that he finally became active again. He is now very active and is currently studying for the General test. He purchased an all-band, all-mode base station and was recently elected as an officer for his local club.

“Since I’m currently a Technician, I mostly have been active on 2m and 70cm FM, although I’ve also been dabbling in SSB on 6m and trying to figure out how to reach someone on 10m with a end-fed long wire antenna,” he said. “I’m very interested in getting into digital modes on HF once I get my General license.”

Listening to the popular ham radio podcasts has been an easy way for him to get back up to speed quickly and learn about new aspects of the hobby.

“Personally, I most enjoy the podcasts that are in a particular technical subject that I’d like to learn more about,” he said. “Some of my favorites are ARRL’s The Doctor is In, Everything Ham Radio, and Ham Radio 360.”

The app is available free (ad-supported) on Google Play:
Ham Radio Podcasts

Everyone has an “Elevator Pitch” nowadays. The idea is to have something prepared to deliver in a minute or so (during an elevator ride) to a listener or reader.

Ham Radio can use elevator pitches, too, and you don’t even need an elevator!

One possibility is to use social networks or newsletters to do ham radio outreach. Your piece will be aimed at non-hams, and should catch their interest and tell them how to take action.

For example, I edit “Catalyst,” the monthly newsletter of our Oregon church. One of the perks of the job is a monthly column, “Cataclysm,” where I can write pretty much anything I like. In my experience, most community newsletters are perpetually hungry for material. If you can put together a few sentences with both subjects and verbs, you can deliver an effective elevator pitch for ham radio in a page or so. Pictures, even from a cell phone camera, are a plus in most publications.

The “Cataclysm” I wrote today is not meant to tell readers everything they need to know about ham radio or even about “Summits on the Air,” or SOTA. The aim is to give people a quick idea of what SOTA and ham radio are about, to suggest that they take action to find out more, and to tell them how to do that.

That’s not very much, but it’s a lot for one page.

I rode my bike to the old Potter Place Railroad Station from Andover this afternoon. I worked Corsica, Oregon, Croatia and Spain. It was absolutely beautiful today.

It was a perfect, clear day around 75F. I rode about 2 miles from Andover along the old Northern Rail route. Part way into the ride I passed the old covered bridge at the Blackwater River.

The Potter Place station is a museum now. I set up under a huge pine tree on the south side of the track. I tossed a 30 foot wire over a branch and started with the KX3 on 20 meters. 9A2AJ, Tom from Croatia was calling CQ. I’ve worked him a dozen times before, and when I answered he asked if I was running 5 watts. He gave me a 579. He was 599 and I told him I was on a bike ride and was, indeed QRP.

Next I went to 17 meters where W1VDE, Roger in Oregon was just finishing up a QSO. At first he said I was only S1, but later he said I’d come up a lot and he gave me a 569. I tuned up a bit and was thrilled to work TK3LS on the island of Corsica. Laurent gave me a quick 599. He was very strong to me.

I was about to call it quits when I heard EA5KM in Spain calling CQ on 30 meters. He had a hard time copying my call, even though he was strong to me. We made a quick exchange and I packed up for the ride back. What a glorious day for a quick outing.

Judy and I went to the beach today. It was 93F. We walked along the shore, rode our bikes, and I worked a little DX.

After walking a mile or so along the beach, Judy took a swim and lay down for some sun, and I set up the KX3 on a bench overlooking Rye Harbor. Above the rocky shore wild roses decorated the entire area. I set up a 33 foot collapsible DK9SQ mast, which I happened to have in the camper. I used a cord to hold it to the back of the bench.

The wire is running alongside the pole. The yellow string you see coming out the side is just a line attached to the wire. I usually use it to toss over a tree branch. I didn’t bother to disconnect it.

I tuned up on 20 meters and made my first contact with John W5LNI in Arkansas. He gave me a 559 and he was 599 with 300 watts and a log periodic antenna. “UR 8 watts doing FB here,” he sent. I was really happy to make a contact with the poor band conditions.

Next I heard another station in Arkansas calling CQ. Darron KG5ABL answered and we exchanged quick 599s. He said he was having trouble with QSB and we signed.

Up the band a little, Remi LY8O in Lithuania was very strong. I answered his CQ and he gave me a 559. What a thrill to work Europe from the beach. Thanks for the nice QSO, Remi.

After packing up, we rode our bikes along the coast for a couple of miles. What a glorious day!

Since I left the Netherlands in 2010 the situation on VHF/UHF there has changed considerably. The Dutch telecom regulator (Agentschap Telecom, or AT for short) revised their repeater policy which resulted in some well known repeaters not getting their licence renewed. On the other hand it opened up opportunities for new experiments like the Coversity network in the north of the country, inter regional repeaters PI3UTR and even the world’s first intercontinental repeater PI2NOS with an access point on the Caribbean island of Curaçao (PJ2NOS). If you want to listen in you can visit the 70 cm webSDR at http://websdr.pi1utr.ampr.org:8901/.

What the AT also noted was that the 70 cm band was quite underused and that there were many requests for digital voice repeaters. The frequency allocation for digital repeaters was expanded and that resulted in a wave of new repeaters, mostly DMR. If you look at the current repeater coverage map it is clear that there are only few places in Holland without DMR coverage. Unfortunately for System Fusion users this means that their repeaters aren’t getting permits to go on air. Part of the problem is that areas are already covered by DMR and D-Star repeaters and part is that System Fusion repeaters run in dual mode: analog FM and digital C4FM. Running an analog repeater in the digital segment of the band or vice versa doesn’t make sense, of course, hence the rejections.

Curious about the fast rise of DMR I decided to check it out a couple of weeks ago while I was in Holland on a family visit. I pre-ordered a Tytera MD-390 which was waiting for me the day I arrived. Unfortunately, without programming (installing a codeplug) the thing won’t work. Being a DMR newbie I decided to call in the help of the local chapter of the VERON, who meet every Friday night in their own club shack in Arnhem.I wasn’t the only one who brought a DMR rig, which confirmed again that DMR is quite popular in Holland. The local DMR repeater owner Cor (PD0GHF) knew immediately what I wanted and called Dave (PD5DOF) in to help me out. Here he is working hard to get the codeplug in order.After a while he got it right and my rig sprang to life. The MD-390 came with two antennas and the longer one was necessary to be able to hit the repeaters when we were indoors.Cor then explained the use of Talk Groups and reflectors and although I understood most, DMR is still rather complex if you come from the analog world. But back home on the camping where we stayed I tried it out and it worked. My first DMR QSO was with Cor (PD0GHF), so that was fun.

After two weeks of using the MD-390 I was totally hooked. The rig can do both DMR and analog NFM and I did make a few QSOs via PI2NOS in good old NFM mode. But NFM pales in comparison with DMR. I have never been able to stand the white noise that is so typical in FM mode; it tires my ears too much. When there is a signal I really have to strain my ears to follow the conversation, especially with weaker signals that have a lot of artifacts. Because of this I have never liked having an FM rig in my car, either.

DMR, on the other hand, is crystal clear. The signal is either there or not there, but when it is there it seems the person is standing right next to you. There is a little “robotic” sound effect, often associated with digital voice, but overall I didn’t find it disturbing. There were no problems hitting local and more distant repeaters and quality was very constant. Amazing that they can put all this in 6.25 kHz of bandwidth. It makes good old NFM look “old” to me.

And then there is the linking of repeaters. Via my local DRM repeater I could talk to any one in the Netherlands on the repeater in their neighbourhood, not just the hams within reach of my repeater. The internet helps out here and linking is global. Saturday at 16 UTC the DMR-MARC World Wide Net is held and you can hear hams from all over the world checking in on Talk Group 2. Amazing!

Now I know many of you old timers will object to digital and the use of the internet in ham radio: “First it was Echolink, now it’s all this digital voice stuff hooked into the net. If it’s not radio, it’s got nothing to do with us hams. And digital signals don’t make for good DXing anyway. FM, AM and SSB degrade more gracefully and provide better signals under challenging conditions.”

I understand the objections. Even I rather listen to good old AM radio on shortwave and SSB on the ham bands. Unfortunately, these modes are fading out and are being replaced by others, if you like it or not. I still don’t understand the attraction of using any of the JT-modes, but they are more popular than ever. To me they are not what ham radio is about, but I accept that many others don’t agree with me. Luckily ham radio is such a diverse a hobby that everyone can find his or her “thing” and be happy with it.

And besides, we hams are quite innovative and always keep radio in the back of our head. We want to be independent, after all. Up and coming in the Netherlands is Hamnet. In short: HAMNET is a high speed amateur radio multimedia network based on commercial wireless devices using mainly the 6 cm band. An internet for hams via radio waves. Guess what you can use to connect all those DMR repeaters with each other instead of the internet? Analog is dead. Long live digital!