Archive for the ‘Uncategorized’ Category
Pixie (40m) build completed this evening
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| Completed 40m Pixie assembly |
This evening, I completed the build of the 40m Pixie PCB assembly. It will get checked over for dry joints or shorts in the morning and air-tested shortly.
A very half-hearted attempt at the 6m UKAC this evening was aborted because of my poor voice but I only worked 3 locals in the short time I was on with my V2000 vertical.
I really wanted to crack on with the Pixie build, although I was not expecting to finish the built today. The small PCB based kit does represent very good value.
Android smartphone with built-in UHF transceiver
- Otium Android smartphone
- Screw-on SMA antenna
Over on Reddit, there’s a discussion going on about an Android smartphone with some sort of built-in UHF radio (FRS/GMRS). It appears to be a Chinese-made Android phone from Otium called the Otium V8. It’s for sale on Amazon for about $300.
Below is a screenshot from someone asking how it works. The frequency is a shared FRS/GMRS channel (in the U.S). I would expect a radio like this to be “channelized” and not show a frequency directly on the screen — which makes me wonder what other frequencies one might be able to enter…?
Are GSM phones with built-in radios common? Has anyone ever used one of these?
From the screenshot of the built-in PTT app, it looks like it has an adjustable power level, does frequency splits, PL/CTCSS, and even has a narrow/wide bandwidth selection.
What chip are they using to do this? Can it be tweaked with software to transmit/receive “out of range” in the 70cm ham band? I’m curious!
ISS SSTV reception in Thunder Bay, ON EN58hh
Been a long while since I played with satellites or even the ISS for that matter. In fact 2 meters has taken a total backseat for me as it no longer thrills me as far as APRS or even repeaters. IRLP nodes as well just don’t do it like they used to, combine that with only one telephone provider (Thunder Bay Telephone) and major dropouts etc on the IRLP it makes it no fun on nodes.
So turned the FT857 on today after reading about the ISS sending SSTV pictures down to earth. Using a dual band vertical at 25′ and using MMSSTV I was able to copy these pictures this afternoon. (Monday afternoon in Ontario)
So kinda made my day to see the pictures up on the screen when I got back into the shack.
Cheers
Fred
VE3FAL
Testing time – 40m Pixie
Tomorrow I am going to try to build my little 40m Pixie kit that I bought for just over £7 from China. This build is an attempt to see if I am “up to the job”. I know the limited performance the Pixie is capable of and on 40m BC breakthrough may be a major issue here in the UK.
I really really miss doing real building and truly experimental amateur radio. This is a step on a long road. My health has been so poor in the last 16 months or so that there was no way I could have attempted this before. People have been very kind and offered me building help and help with antenna erection. These offers have come from all over the world – the world is filled with good and very kind people. There are far more good and kind people than evil ones.
By normal standards a little Pixie build would be trivial. For me it is a major step and test of my current abilities. I do so hope I can manage this! Please don’t laugh – to me it is a major step.
HamRadioNow: CQ ‘Comes Clean’ (a click-bait title)
There’s something that just didn’t sink in as I interviewed CQ editor Rich Moseson W2VU at the Orlando HamCation for this episode. CQ is in trouble, and advertising is the problem. Or rather, lack of it. Rich said that while subscriber numbers are important, the real revenue comes from ads, and the ham radio manufacturers and retailers that had been buying the ads in the magazine can’t afford to buy them, or as many of them, today.
Subscriber numbers bring in advertisers, of course, but if the companies can’t afford the ads, it doesn’t matter. And I got that, for a minute or two, but then I sort of lost the concept. But the bigger connection I didn’t make until maybe the 10th time I watched the interview (yes, I do that, because I like to hear myself talk) was that ads in the digital version of the magazine are an even tougher sell. So if CQ were to go all-digital to save printing and postage, it wouldn’t help enough. They’d make even less money because they wouldn’t get many of the ads that they do get now. At least that’s my takeaway.
It’s not just CQ and ham radio – digital media, including print, audio and video, isn’t valued as much as “traditional” media, even if the audience is the same. I’m no expert in this, but that’s the conventional wisdom I read in the trades.
One other thing to consider before you watch the episode is that sub-$50 Chinese HT you marvel at. They don’t advertise or support ham radio in any way other then selling you a radio for peanuts. Some of their distributors are beginning to advertise for them, but the companies themselves are still mostly a cypher here in the US. I’m just sayin’….
There’s more from Orlando at HamRadioNow.tv.
73, Gary KN4AQ
What will solar cycle 25 look like?
We now seem to be, on average, on the downward slope to the next solar minimum. Some are predicting that the next peak will be almost a non-event with the sunspot number peak of just 7. Of course no-one really knows, but I think it is true that most experts now think cycle 25 will be very poor. Conditions on LF/MF are likely to improve but decent F2 propagation on 10m is likely to be rare, except perhaps with N-S paths over the equator. What is certain is no-one is really sure. Summer Es could well be the dominant DX mode on the higher HF bands.
UPDATE 2048z: I have now gone QRT (for the night) on 10m but I will be on 160m now and overnight. Back on 10m tomorrow morning after breakfast.
AM on 28MHz and up
Much to my surprise, the RSGB actually published my recent letter to their “The Last Word” column in RadCom, together with a (pathetic) reply from their Spectrum Chair. At least my letter was printed.
The response did nothing to address my concerns. Although the RSGB claims not to be anti-AM, you’d find this hard to believe with a look at the most recent band plans. AM has its place on all bands from 28MHz upwards. I just wish the RSGB and other national organisations would simply acknowledge that this mode has its place. It may be a minority interest mode, but in my experience it is the simplest mode from a building viewpoint.
















