Search found 126 matches

by 13dka
Mon Sep 11, 2023 9:21 pm
Forum: General Discussion
Topic: A nice and simple regen receiver
Replies: 2
Views: 8123

Re: A nice and simple regen receiver

At times I regret not having gone down the DIY electronics rabbit hole and I still find the thought of making simple but powerful radios interesting. What curbs my enthusiasm though is the mechanical side, how to make not only something that works well and looks good, but something that has a proper...
by 13dka
Fri Sep 08, 2023 12:14 pm
Forum: General Discussion
Topic: The Belka (-DSP/-DX/-v3) appreciation thread
Replies: 34
Views: 16180

Collection of misinformation on reddit about the Belka

Reddit, the self-proclaimed "homepage of the internet" is known to be a pretty toxic place. Since it has some "subs" related to all of my hobbies, e.g. r/shortwave, r/amateurradio and r/hamradio I occasionally read the newest posts there anyway, but more for the entertaining crin...
by 13dka
Fri Sep 01, 2023 5:15 pm
Forum: General Discussion
Topic: The Belka (-DSP/-DX/-v3) appreciation thread
Replies: 34
Views: 16180

Belka - whip vs. SULA vs IC-705

I figured this would fit best here, even though it could also fit in "Utility" or the "SULA" thread(s): Last Monday I took the chance to compare the Belka and its whip with the IC-705 and the SULA (and also the whip against the SULA on the Belka alone), with some results that cou...
by 13dka
Wed Aug 02, 2023 4:41 am
Forum: General Discussion
Topic: Oddity on WWV's 10MHz frequency June 30, 2022 05:10Z
Replies: 11
Views: 5104

Re: Oddity on WWV's 10MHz frequency June 30, 2022 05:10Z

Doubt a relay or airtime broker or pirate would fire up square on 10mhz. Certainly not intentionally! If not overload, a mixing product. Weird thigns happen when bombarded with strong signals or a peice of your gear failing. Well I'm pretty familiar with these failure modes. "Mixing" and ...
by 13dka
Wed Aug 02, 2023 12:59 am
Forum: General Discussion
Topic: Best Region for SWL Hobby
Replies: 6
Views: 3897

Re: Best Region for SWL Hobby

I'd say alaska, bar none! That could be true, due to low population density (low noise and plenty of space) and being on top of a ring of continents framing the Pacific ocean with e.g. interesting MW activity, so a lot of true DX targets with nothing in between. Your very high latitude (62°N) offer...
by 13dka
Wed Aug 02, 2023 12:09 am
Forum: General Discussion
Topic: Oddity on WWV's 10MHz frequency June 30, 2022 05:10Z
Replies: 11
Views: 5104

Re: Oddity on WWV's 10MHz frequency June 30, 2022 05:10Z

Hi Paul, Nice to see you here on our little board! Of course intermodulation is the first thing coming into mind when you hear something like this, that's why you can see me turning down the RF gain (which acts directly on the RF input stage on this radio) in the video. But besides intermodulation p...
by 13dka
Mon Jul 31, 2023 11:41 am
Forum: General Discussion
Topic: The Belka (-DSP/-DX/-v3) appreciation thread
Replies: 34
Views: 16180

Re: The Belka (-DSP/-DX/-v3) appreciation thread

Ah yeah I know that super fine brown Sahara dust, I have it on my car every early summer but that's not it. Apparently high electric charges under rain clouds long before they reach the thunderstorm charge levels are known, for example I found kite surfers reporting that they got shocks when they en...
by 13dka
Sun Jul 30, 2023 11:34 pm
Forum: General Discussion
Topic: The Belka (-DSP/-DX/-v3) appreciation thread
Replies: 34
Views: 16180

Re: The Belka (-DSP/-DX/-v3) appreciation thread

I just had a scary thing happening at the dike: When I arrived there this evening, I could already see that the rain forecasted for 0:00 local was about to arrive an hour earlier. I parked and stuck the Belka + whip to the side window anyway. After a while I noticed that the AGC was triggered (gain ...
by 13dka
Sun Jul 30, 2023 10:53 pm
Forum: Utility Stations
Topic: Charleville (AUS) maritime radio and stuff
Replies: 0
Views: 7115

Charleville (AUS) maritime radio and stuff

A few weeks ago I stumbled upon 12365kHz - I heard a coastal weather transmission in English at the dike, with a signal that made me believe it would be from the UK or the US. Back home it turned out it was - of course - VMC Charleville (Queensland, eastern Australia), the sister station of Wiluna R...
by 13dka
Mon Jul 24, 2023 11:51 pm
Forum: General Discussion
Topic: The LoG (Loop on Ground), a take from N6LF
Replies: 1
Views: 2530

Re: The LoG (Loop on Ground), a take from N6LF

Pretty interesting indeed! Looks like he's really getting a lot out of it by raising the Q on his target frequency. Made me think if this would be something to consider for our smaller versions for SW but then I thought the whole purpose of the exercise is minimizing the losses and that's what a pre...