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Questions tagged [swl]

Questions about shortwave listening and similar low-frequency reception activities.

4
votes
5answers
245 views

How important is the impedance and resonance of a receive antenna?

I'm very new to shortwave radio, as evidenced here: Can an antenna be too powerful for certain receivers? I want to build a longwire receive-only antenna for the HF frequencies. I've been using ...
4
votes
2answers
144 views

I would like to listen to a red roadster in space

I have been listening for signals (any) of the Space-X Falcon Heavy. Just out of curiosity. And I am wondering if anyone has received any. According to the Falcon-9 User Guide table 4.6 looks like ...
2
votes
1answer
108 views

Signal on various frequencies, about 2.5k bandwidth, sounds like a broken motor turning: What is it?

There are a number of frequencies, where a certain type of signal can be heard. The characteristics is, that every occurrence takes about 2.5k bandwidth, and it is transmitted in a continuous way. ...
0
votes
1answer
124 views

DRM standard receiving on shortwave

What's the particularities of receiving SW-broadcasting, that uses DRM standard ? Every SW-receiver can directly receive this kind of signal?
2
votes
1answer
199 views

Are there many analog (AM) shortwave broadcast stations left?

I'm considering hanging a long wire this spring and trying to get my 13 y.o. son interested in radio as a Scouting activity. Has everything gone to DRM these days, or is it worth dusting off my HQ-...
3
votes
2answers
183 views

What are some shortwave radio stations I ought to reliably receive in New Hampshire?

I recently bought a Techsun PL-660 radio and it picks up virtually nothing on SW. I fear I may have a dud.
5
votes
3answers
513 views

Minimal info on a SWL QSL

Which is the minimal information I should require to confirm/QSL a reception report I receive ? I know the report must contain my callsign, time, date and band where I was listened. Is it also a ...
3
votes
3answers
886 views

What should I look for in a modern portable shortwave radio?

I'm looking to buy a shortwave to listen to either solely at home or perhaps if possible in a vehicle when traveling. What should I look for when looking them over? I recall many years ago the ...
2
votes
1answer
110 views

Is this beacon the tail end of a 'Numbers Station' broadcast?

I was recently scanning through the short-wave frequencies and stumbled upon a series of repeating tones, which then cut to classical music and then a woman speaking French (unconfirmed). Later I was ...