Search found 15 matches
- Mon Apr 17, 2023 8:41 am
- Forum: General Discussion
- Topic: Matching transformer for random wire?
- Replies: 7
- Views: 14844
Re: Matching transformer for random wire?
Some years ago I had exactly the same problem as you. A friend adviced me to build a simple antenna tuner, and a quick search on the internet resulted in a link to a building instruction for an antenna tuner in PDF format by someone calling himself Editor Bob. Since then I have built two more of the...
- Sun Apr 09, 2023 10:23 am
- Forum: General Discussion
- Topic: Improving the MLA-30
- Replies: 2
- Views: 11968
Re: Improving the MLA-30
Never used a MLA-30 myself, but today I more or less stumbled over this discussion where they also have published schematics for both loop amplifier and bias-T:
https://www.eevblog.com/forum/rf-microw ... p-antenna/
Good luck!
https://www.eevblog.com/forum/rf-microw ... p-antenna/
Good luck!
- Fri Apr 07, 2023 6:06 pm
- Forum: General Discussion
- Topic: Need some advice.
- Replies: 2
- Views: 12365
Re: Need some advice.
If you were happy with the PL-880, the 990 (or a 2nd-hand 880) might be a reasonable replacement. The S-8800 is the only of the two I own and I found it a particularly quirky radio, it's also quite big for traveling with it. Thanks for posting your opinion on the S-8800. A few days ago I visited a ...
- Fri Mar 31, 2023 11:25 am
- Forum: General Discussion
- Topic: Need some advice.
- Replies: 2
- Views: 12365
Need some advice.
My old faithful PL-880 has been stolen. Forgot to take my bag with me when I went to the airport toilet, and when I returned to my table, the bag was opened and someone had taken the PL880 and my shaver! The thief was caught on CCTV, but I don't beleive I ever get my belongings back. So now I'm goin...
- Thu Jun 09, 2022 11:35 am
- Forum: Questions & Advice
- Topic: Matching an external antenna to the Belka-DX?
- Replies: 10
- Views: 9622
Re: Matching an external antenna to the Belka-DX?
I'm guessing most matching transformers/baluns/ununs don't make sense, since they're trying to bring high impedance down to around 50 Ohms. All the devices you mention are in fact RF-transformers, and they work both ways. Just by swapping the input/output connectors they all work as step-up devices...