Search found 161 matches

by JEL
Thu Mar 05, 2020 4:15 am
Forum: Antennas
Topic: Static shock while connecting ground-wire to radio?
Replies: 11
Views: 10095

Re: Static shock while connecting ground-wire to radio?

Thanks Hotpaw2 :) I already have a ground-wire permanently connected to the shield of the antenna (And since it's a loop-antenna thus also automatically to the lead wire) But I have ordered a galvanic isolator and also a surge-protector, which are to sit on the cable near the radio, so I'm currently...
by JEL
Tue Mar 03, 2020 4:11 pm
Forum: Antennas
Topic: Static shock while connecting ground-wire to radio?
Replies: 11
Views: 10095

Re: Static shock while connecting ground-wire to radio?

Thank you very much Bruce :) I will order the commercial one, just to be on the safe side (Being in Europe and not near any shops with personnel having expertise in this area of all things amature-radio, I would not feel too sure I was doing things correctly if I attempted to build it myself) Anyway...
by JEL
Tue Mar 03, 2020 2:16 am
Forum: Antennas
Topic: Static shock while connecting ground-wire to radio?
Replies: 11
Views: 10095

Re: Static electricity built up over time

I guess you are experiencing static electricity built up over time. If you have a coax cable then the capacity, wich will vary with cable type and length, the static electricity will accumulate over time. Did you have a thunderstorm building up in your area when you experienced this? The static ele...
by JEL
Mon Mar 02, 2020 8:40 pm
Forum: Antennas
Topic: Static shock while connecting ground-wire to radio?
Replies: 11
Views: 10095

Re: Static shock while connecting ground-wire to radio?

Short update; I just measured the antenna-plug and get voltages up to about 0.2 VAC and no detectable Amperes. The multi-meter also has a light that lights up when held near a power-line (Used to search for power-cables hidden in walls and such. The normal ones for regular house-appliances and such....
by JEL
Mon Mar 02, 2020 7:38 pm
Forum: Antennas
Topic: Static shock while connecting ground-wire to radio?
Replies: 11
Views: 10095

Re: Static shock while connecting ground-wire to radio?

Do a Google search and you'll find directions on how to make it and connect it between your antenna and the receiver. 73, Bruce, VE3EAR Would something like this commercial product make sense (As an amature I think a DIY on this occasion may not be the best option. Not so much the building, but rat...
by JEL
Mon Mar 02, 2020 2:44 pm
Forum: Antennas
Topic: Static shock while connecting ground-wire to radio?
Replies: 11
Views: 10095

Re: Static shock while connecting ground-wire to radio?

Thanks. I should look into that I suppose. I tried touching the wire today and there was nothing, and the radio runs at the moment with no issues and great reception. I thought the ground-wire was there to take up the potential static-electricity though, and that the shock I got was from it balancin...
by JEL
Sun Mar 01, 2020 7:49 pm
Forum: Antennas
Topic: Static shock while connecting ground-wire to radio?
Replies: 11
Views: 10095

Static shock while connecting ground-wire to radio?

I just got a fairly surprising electrical-shock while connecting a ground-wire to an antenna-connection, and have a question about it (And this is for radio-reception only, not transmitting) It felt the same strength as those you can get from touching a TV-antenna plug (When connected to the TV-prov...
by JEL
Thu Feb 27, 2020 7:49 am
Forum: Signal Identification Help
Topic: AM-radio with unstable frequency?
Replies: 4
Views: 8293

Re: AM-radio with unstable frequency?

same date and signal https://youtu.be/4oI95N7EOsE Very cool :) Much better reception than I got. May not be Chinese after all, but perhaps some pirate-station? I have noticed Russian pirates near 3 MHz and their AM-carriers drift all over the place too, similar to this one. And I also receive those...
by JEL
Wed Feb 26, 2020 6:44 am
Forum: Signal Identification Help
Topic: AM-radio with unstable frequency?
Replies: 4
Views: 8293

Re: AM-radio with unstable frequency?

It could just be receiver intermodulation. If you have a 10 or 20 dB attenuator insert it and see if you still receive the station. Thanks, but I really doubt it is intermodulation. When I get those they never move around unless I scroll the frequency-window. And when I do that they always scroll i...
by JEL
Tue Feb 25, 2020 1:43 pm
Forum: Signal Identification Help
Topic: AM-radio with unstable frequency?
Replies: 4
Views: 8293

AM-radio with unstable frequency?

What might be causing this 'bouncy-house' signal? I am guessing it is a Chinese AM-radio-station, but it is too faint for me to be sure. The carrier kept going up and down several kHz like it was on a roller-coaster, but the signal itself was clear (Apart from being faint of course. What I mean is; ...