271
HF Beacons / Re: "H" Beacon 4100.03kHz
« on: October 01, 2020, 0118 UTC »
Good copy on the H beacon on the Sedona Kiwi SDR. Nice signal!
Shortwave Pirate Radio In North America And Around The World, And Other Signals That Go Bump In The Night
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272
HF Beacons / Re: Windy 4102.85 malfunction?
« on: September 21, 2020, 2235 UTC »
Seeing that too (via KFS Kiwi)
Glad it's back even in safe mode.
Glad it's back even in safe mode.
273
The RF Workbench / Re: Arduino voice telemetry sketch
« on: September 11, 2020, 1313 UTC »
Very interesting post, thank you!! More to read and study :-)
275
HF Beacons / 4095.8 & 6700
« on: September 10, 2020, 2335 UTC »
Making it into the KFS SDR at 2334 Z....
6700 quite strong into same.
Even with marginal prop today!
6700 quite strong into same.
Even with marginal prop today!
276
HF Beacons / Re: Heard in northern utah (NUT)
« on: September 10, 2020, 2327 UTC »
E season *was* pretty good this year!
Hope to hear some new beacons this fall ....and or some old favorites.
Hope to hear some new beacons this fall ....and or some old favorites.
277
HF Beacons / Re: Windy 4102.85 malfunction?
« on: September 10, 2020, 2321 UTC »
Wherefore art though oh Windy? 
278
HF Beacons / Re: ML/B 20m beacon 14357 kHz
« on: September 04, 2020, 2028 UTC »
Will keep listening too!
You might look at the Epson programmable oscillators. $4 programmed to your frequency and 4mW out according to my measurements.
Will turn the beam your way
You might look at the Epson programmable oscillators. $4 programmed to your frequency and 4mW out according to my measurements.
Will turn the beam your way
279
The RF Workbench / Re: Arduschreiber HF-Beacon mkII
« on: August 16, 2020, 1914 UTC »
That's a nice looking build BUT I think you'll find that getting enough frequency stability for good HELL images is going to be tricky .
BTW, design might have worked fine with a resonant antenna rather than random/long wire. Feed it into a dipole and I bet it's happy!
BTW, design might have worked fine with a resonant antenna rather than random/long wire. Feed it into a dipole and I bet it's happy!
280
SDR - Software Defined Radio / Re: Chinesium "msi sdr" (Blue dolphin)
« on: July 02, 2020, 1401 UTC »
Messed with this last night and this morning and I'm satisfied with the performance. It's a RSP1A in performance (I have one to compare against). For $45 bucks it's a keeper. Listening to CW on 40M this morning. \\
281
SDR - Software Defined Radio / Re: Chinesium "msi sdr" (Blue dolphin)
« on: July 01, 2020, 1803 UTC »
Indeed.... pride of China. The other one I got doesn't rattle. The guy who's in charge of making sure they rattle must have missed that one.
So far, I'm pleased. I'm running the new openwebrx and though I won't declare victory from images until I take a peek at the low end of 40M this evening.
https://imgur.com/a/xHSG9hc
is the link. I can never remember how to post images on this board. If you zoom in there, you can see a fair amount of detail in the waterfall.
Anyway, it's pretty decent. I'll wring it out some more this evening. I can already tell it's much better than the RTL-SDR, and it should, as it's got 4 more sampling bits to work with than the cheap dongle. This one is a semi-cheap dongle ~$45 delivered from an EBAY reseller. It's a few more bucks to get the throw-away pigtail and vertical antenna.
More later, but good stuff so far. It "chooses to identify" as a RSP1 (or 2) as far as defining it in a configuration file.
So far, I'm pleased. I'm running the new openwebrx and though I won't declare victory from images until I take a peek at the low end of 40M this evening.
https://imgur.com/a/xHSG9hc
is the link. I can never remember how to post images on this board. If you zoom in there, you can see a fair amount of detail in the waterfall.
Anyway, it's pretty decent. I'll wring it out some more this evening. I can already tell it's much better than the RTL-SDR, and it should, as it's got 4 more sampling bits to work with than the cheap dongle. This one is a semi-cheap dongle ~$45 delivered from an EBAY reseller. It's a few more bucks to get the throw-away pigtail and vertical antenna.
More later, but good stuff so far. It "chooses to identify" as a RSP1 (or 2) as far as defining it in a configuration file.
282
The RF Workbench / Re: HF beacon using Hellschreiber and Arduino, Ardushcreiber
« on: July 01, 2020, 1429 UTC »
Thanks for the code. I'll see if I can port it to an ATtiny.
I have those running now with QRSS code. 2mA ......
I have those running now with QRSS code. 2mA ......
283
SDR - Software Defined Radio / Re: RPi Ethernet question
« on: July 01, 2020, 1405 UTC »
PiFinder is a handy bit of software.....
284
SDR - Software Defined Radio / Chinesium "msi sdr" (Blue dolphin)
« on: July 01, 2020, 1403 UTC »
I got one of these to compare to the RSP1 they're supposedly similar to. First thing I noticed is that something was rattling inside the blue anodized case.
I took it apart (4 small screws on each end) and the board slides out of its extruded aluminum case.
That's nifty BUT what it means is there's zero electrical connection from the board to the case.
I soldered a small piece of solder wick to the ground plane, filed off the anodizing from the mating surfaces of the housing, pinched the solder wick between one end plate and the case and tightened everything down tight. Now there's a good ground connection between the board and the case.
As usual, the Chinese ALMOST get things right.... but....
Now, to see how it works with openwebrx.
I took it apart (4 small screws on each end) and the board slides out of its extruded aluminum case.
That's nifty BUT what it means is there's zero electrical connection from the board to the case.
I soldered a small piece of solder wick to the ground plane, filed off the anodizing from the mating surfaces of the housing, pinched the solder wick between one end plate and the case and tightened everything down tight. Now there's a good ground connection between the board and the case.
As usual, the Chinese ALMOST get things right.... but....
Now, to see how it works with openwebrx.
285
The RF Workbench / Re: dumb soldering question of the day
« on: June 25, 2020, 1240 UTC »
I have a Metcal with 20+ tips for electronics that I use daily (and have for 20+ yrs)
For CONNECTORS, there's no substitute for thermal mass. The Metcal is not nearly as effective on large connectors as a large iron. I can get on and off a large connector in a few seconds, and quench it before affecting any of the dielectric.
For CONNECTORS, there's no substitute for thermal mass. The Metcal is not nearly as effective on large connectors as a large iron. I can get on and off a large connector in a few seconds, and quench it before affecting any of the dielectric.
Those irons sound awful, maybe ok for plumbing pipes and such but no use in any electronic environment!
METCAL, the one and only. Yes there were probably over $1000 new but you're going to buy a second hand one anyway.
They pop up on eBay quite often, just get one, you won't regret it.
Str.