SWLing Post Message Board

The antenna works great. That null is deeeeeep! I'd like to put it in the rotator I have on the roof. My question now is about the recommended 3-meter height: Would that be from the ground, or from the roof itself? Thanks for the great antenna design! from the "ground plane" if the roof a...

And here's another interesting circuit https://antiqueradios.com/forums/viewtopic.php?t=373629 it's a superhet based on the classic NE602, but with a difference, the LO is a regen stage based on the LM386 (yes, not kidding) SW Superhet with Regen IF.png that "hack" allows to improve the pe...

Late on this (have been on holidays :D) but I think that those folks are comparing apples and oranges and they just "shoot" stuff w/o even understanding what they're talking about; just consider that the Belka is a "self contained" unit, while a standard SDR needs a computer, let...

that one is the V2, no need to scrape anything it does not have the center tap even if the PCB shows it

notice that the V1 has the central tap, while the V2 doesn't so with the V2 there's nothing to cut

Thank you, Egil. I guess I should clarify my question: How do I physically cut the resistor? Score across it with a knife? see here https://swling.com/blog/wp-content/uploads/2021/08/balun_back.jpeg you just use a cutting blade to cut the circuit trace, then use a multimeter to check if the two sid...

If someone here likes fiddling with a soldering iron, here's the schematic for a regen https://www.aa5tb.com/regen.html https://www.aa5tb.com/regen2.gif I'm posting it just since I like how well it's designed while being simple, let me start from the input stage, the common gate JFET does multiple d...

do you have some length of old coax sitting in a corner ? Do you need a "cheap and dirty" antenna to use at whatever location ... even to transmit ? Well, read on :D Pick your coax, be it RG58, RG59, RG6 or whatever. as long as you know its characteristic impedance, say 50.or 75 Ohm, now ....

hmm... not sure, but are you referring to this ? https://swling.com/blog/tag/radio-sahka/ That one is what im referring to. what im wondering is why the station was reactivated and for just such a short time? I wonder if it may be similar to what reported about "Radio Vostok Rossii" here ...

hmm... not sure, but are you referring to this ?

https://swling.com/blog/tag/radio-sahka/

or to Radio Rossii ?

https://www.google.com/amp/s/www.bbc.co ... 683656.amp