Search found 273 matches

by Andrew (grayhat)
Tue May 31, 2022 3:56 pm
Forum: General Discussion
Topic: What's the best-looking shortwave tabletop receiver?
Replies: 41
Views: 76678

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

Regarding the title of this thread only, I've always thought the Hallicrafters SX-28 was gorgeous: Well, if you like the SX-28, then what about the Murphy B-40 :D ? http://www.awasa.org.za/images/stories/com_form2content/p4/f32/15.jpg http://www.awasa.org.za/radios/87-murphy-b40-series-naval-receiv...
by Andrew (grayhat)
Tue May 31, 2022 2:47 pm
Forum: Questions & Advice
Topic: Generate your personal azimuthal map
Replies: 8
Views: 19488

Generate your personal azimuthal map

From time to time one may need to have a quick reference to the bearing from his position to a given location, for example to aim an antenna, now a good way to have such a reference is using an azimuthal map centered on the desired location; what follows shows how to generate such a map centered on ...
by Andrew (grayhat)
Tue May 31, 2022 1:42 pm
Forum: General Discussion
Topic: LoG antenna trick
Replies: 17
Views: 10042

Re: LoG antenna trick

I use stakes with short ropes attached to them for that: Yes, ropes will work, although they may tend to "wrap/garble" while nylon tiers will remain a bit more rigid (Sorry, bad pics, didn't mean to picture the stakes that morning and quickly realized that trying to take pics of a LOG is ...
by Andrew (grayhat)
Tue May 31, 2022 10:00 am
Forum: General Discussion
Topic: LoG antenna trick
Replies: 17
Views: 10042

LoG antenna trick

What follows is a small trick which allows to maximize the performance of the LoG (Loop on Ground) antenna, I won't add details about the antenna since it has been discussed on SWLing, but if one doesn't know about it, the infos about such an antenna can be found on Matt Roberts' page, here http://w...
by Andrew (grayhat)
Mon May 30, 2022 5:43 pm
Forum: General Discussion
Topic: PSA to Moderators: Email Notifications
Replies: 3
Views: 3555

Re: PSA to Moderators: Email Notifications

the someone is me, guilty as charged, your honor

seriously, wanted to test the function since as you wrote, it's an important one
by Andrew (grayhat)
Sun May 29, 2022 3:36 pm
Forum: General Discussion
Topic: [Test Post] Holy Grail Last Dodo BNC Antenna Switch
Replies: 15
Views: 10352

Re: [Test Post] Holy Grail Last Dodo BNC Antenna Switch

what puzzles me is the fact that, if the switch was used in those "field containers" it doesn't (seem to) have some kind of support flange or the like
by Andrew (grayhat)
Sun May 29, 2022 1:31 pm
Forum: General Discussion
Topic: Checking for suspicious CMC
Replies: 2
Views: 3166

Re: Checking for suspicious CMC

Great advice! Too bad there are only 2 types of hams, the guys who read stuff like this and the guys who complain about their PA doing strange things (and blame the PA for it) in partially unreadable transmissions because the in-shack RF is destroying their modulation. :mrgreen: I have a guy who's ...
by Andrew (grayhat)
Sun May 29, 2022 10:30 am
Forum: General Discussion
Topic: Checking for suspicious CMC
Replies: 2
Views: 3166

Checking for suspicious CMC

Ok this one is more about tx than rx, still this old trick is easier and quicker than assembling an RF ammeter; in short, if one suspects about "RF in the shack" a quick way to check is to find the band where the problem(s) are more evident, at that point, pick a run of insulated wire and ...
by Andrew (grayhat)
Sun May 29, 2022 10:20 am
Forum: General Discussion
Topic: What's the best-looking shortwave tabletop receiver?
Replies: 41
Views: 76678

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

In my humble opinion, it's the Japan Radio NRD-515. Functional, utilitarian, without looking cheap. https://www.universal-radio.com/catalog/commrxvr/nrd515.jpg Cheers, Jock JRC rigs are, in my very humble opinion, the best engineered ones, just to say, a lot of them were built usin a modular approa...
by Andrew (grayhat)
Sat May 28, 2022 1:07 pm
Forum: Questions & Advice
Topic: Sanyo TA395 schematic
Replies: 0
Views: 20951

Sanyo TA395 schematic

Hello, a friend found a Sanyo TA395 walkie talkie at a garage sale, and after picking it "for a song" decided to restore it, the problem is that we were unable to find the schematic, so here I am, asking for help