Search found 270 matches

by Andrew (grayhat)
Thu May 18, 2023 3:19 pm
Forum: General Discussion
Topic: The SULA antenna
Replies: 63
Views: 41394

Re: The SULA antenna

thanks to both of you, I'll try my hand at building it and I'll tell you...unfortunately my conditions are what they are as a space for antennas...the best is a balcony practically closed on 3 sides...I have an active loop similar to ala1530 that up to 2 meters is fine, @Andrew I'm also looking for...
by Andrew (grayhat)
Thu May 18, 2023 12:28 pm
Forum: General Discussion
Topic: The SULA antenna
Replies: 63
Views: 41394

Re: The SULA antenna

hello .... a curiosity .... how does it behave towards the high portion of the HF? like in 15 and 10 meters amateur radio?...thanks and congratulations for everything! Hi there, Martyn, welcome on this forum. Regarding your question, I hope 13dka answer included the infos you were seeking for, I'll...
by Andrew (grayhat)
Mon May 15, 2023 5:43 am
Forum: Log Sharing & Broadcast Frequencies/Schedules
Topic: Italy is back on MW!
Replies: 2
Views: 4832

Re: Italy is back on MW!

here's a partial list https://it.m.wikipedia.org/wiki/Emittenti_radiofoniche_italiane_in_onde_medie no english version, sorry. but the table should be easily readable even w/o a translator Fact is that, after the switch off of RAI MW transmitter, the government changed the laws/regulations and nowad...
by Andrew (grayhat)
Sat May 13, 2023 5:46 am
Forum: Questions & Advice
Topic: any reasonably-sized directional antennas for FM broadcast radio reception?
Replies: 5
Views: 5700

Re: any reasonably-sized directional antennas for FM broadcast radio reception?

I wonder if the jungle job could be assembled using replacement telescoping antennas that are sometimes available for shortwave radios? Three telescoping antennas, a bit of wood and some wire? well, yes, if the antennas are long enough they will fit as a reflector, add two pieces of wire for the di...
by Andrew (grayhat)
Wed May 10, 2023 4:00 pm
Forum: Questions & Advice
Topic: any reasonably-sized directional antennas for FM broadcast radio reception?
Replies: 5
Views: 5700

Re: any reasonably-sized directional antennas for FM broadcast radio reception?

Another easy to build and quite efficient antenna is the H-DoubleBay by W4GRW, the antenna can be built for the HF or for the V/UHF bands, the original website disappeared in the internet limbo, but luckily was archived so a good copy is still available here http://web.archive.org/web/20210216050430...
by Andrew (grayhat)
Mon May 08, 2023 11:57 am
Forum: General Discussion
Topic: The Belka (-DSP/-DX/-v3) appreciation thread
Replies: 34
Views: 25831

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

which antenna did you use ? The belka whip or an external one ?
by Andrew (grayhat)
Fri May 05, 2023 2:45 pm
Forum: Questions & Advice
Topic: any reasonably-sized directional antennas for FM broadcast radio reception?
Replies: 5
Views: 5700

Re: any reasonably-sized directional antennas for FM broadcast radio reception?

as for the Jungle-Job, in case someone is interested, here's the 4NEC2 model for the antenna, feel free to play with it as desired :D CM G4ZU "Jungle job" antenna (2 element compact beam) CM https://www.essexham.co.uk/gordon-dick-bird-g4zu-information CM feedpoint impedance around 50 Ohm, ...
by Andrew (grayhat)
Fri May 05, 2023 8:18 am
Forum: Questions & Advice
Topic: any reasonably-sized directional antennas for FM broadcast radio reception?
Replies: 5
Views: 5700

Re: any reasonably-sized directional antennas for FM broadcast radio reception?

Recently, I became interested in chasing down some low-power community FM broadcast stations. Yes, I know it is possible to build yagis to cover the commercial FM broadcast range, but I was hoping for something more compact and more readily portable... Cheers, Jock Hi there, Jock, you may try the &...
by Andrew (grayhat)
Fri May 05, 2023 7:48 am
Forum: General Discussion
Topic: What's the best-looking shortwave tabletop receiver?
Replies: 41
Views: 31005

Re: What's the best-looking shortwave tabletop receiver?

just found a nice and pretty "rare" receiver https://wa3dsp.org/RME/RME6900/ https://wa3dsp.org/RME/RME6900/DSC04617.JPG according to the notes found at the above link, RME was a small company created by W9CI and W9RGH, after WW2 they merged with Electrovoice and later on, the Ten Tec comp...
by Andrew (grayhat)
Mon May 01, 2023 11:39 am
Forum: General Discussion
Topic: One antenna, multiple receivers...
Replies: 0
Views: 11043

One antenna, multiple receivers...

... or even, multiple antennas, one receiver :D Anyhow, the following device https://ka7oei.blogspot.com/2019/11/homebrew-construction-of-2-and-4-port.html?m=1 is called splitter/combiner, they exist as passive or active ones, the above one has pretty good insertion loss, but willing to compensate i...