Author: Edward via Topband <topband@contesting.com>
Date: Thu, 16 Apr 2020 21:34:21 +0300
Greetings, I am getting clobbered by a local BCB transmitter, making 160M unusable, even with a dedicated RX antenna. As for filters, I have narrowed it down to the ICE and the Kiwa. Kiwa seems to be
Hi Ed, What is the frequency of your local BCB transmitter? This is the best brickwall filter -- capable of handling 200 watts -- that money can buy. Its provides at least 40 dB of attenuation below
I had the same problem - 0.8 miles away from 50KW station on 760KHz. I don't use a high pass filter on my main antenna but what I did do was wrap as many turns as possible through a mix 76 toroid and
This looks interesting, even though I would rather read text than watch a video. I just bookmarked it, and will watch some later. Thanks! 73, Mike W0BTU _________________ Searchable Archives: http://
I understand but text only would make it impossible to view the improvements. 73! Mark KA6WKE Latest Video: https://ka6wke.net/gmail Website: https://www.ka6wke.net _________________ Searchable Archi
Oh sure! I was just trying to say that some of your videos appear to be worth my time to watch. :-) 73 Mike W0BTU _________________ Searchable Archives: http://www.contesting.com/_topband - Topband R
Make your own! Use this site to design your filter. http://www.iowahills.com/9RFFiltersPage.html Attached are the values I used back in 2016 when the G4AQG FT-1000MP had intermod problems with a new
Ed, If your receive loop has a preamp at its feed point, its very likely that the preamp is being overloaded by the nearby BCB station. If that's the case, a filter after the preamp will not help. 73
Heres a link to the values I used, seeing as it doesnt get through the reflector. http://www.g4aqg.sussex.ac.uk/9-pole-chebyshev-1500-exactvalues.tiff Built in an evening in a diecast box with BNC so
Yeah a few of my earlier videos are used to cure insomnia. I'm still trying to figure out my niche. 73! Mark KA6WKE Website: https://www.ka6wke.net _________________ Searchable Archives: http://www.c
What RX loop to do have? 73! Mark KA6WKE Website: https://www.ka6wke.net _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Use this site to design your filter. http://www.iowahills.com/9RFFiltersPage.html Attached are the values I used back in 2016 when the G4AQG FT-1000MP had intermod problems with a new Beverage. I bui
As Rick and Frank have observed, the operating frequency(ies) of the BC stations you need to suppress matters a lot. The better 160M bandpass filters are probably all you need for a BC station low in
Hi Rick, Thanks for that - good point about Inverse chebyshev. and the toroids were dust iron Were fortunate in not having mega strong signals near the top of the MW band here. Jeremy Jeremy Maris 14
Most AM plants have been where they are for decades. I remember being at the local 670 site several years ago. That tx site has been there since the 1930s. This is a ~800 foot tower, now with two sig
What makes me most angry? Is radio manufacturers that include steep filters and even attenuators in their radios to block AM Broadcast band signals. Then advertise that their radio covers from 50 KC
Is radio manufacturers that include steep filters and even attenuators in their radios to block AM Broadcast band signals. Then advertise that their radio covers from 50 KC to 60 Mhz! Sorry NO IT DOE
Author: Kriss Alan Kliegle KA1GJU <kliegle@myfairpoint.net>
Date: Fri, 17 Apr 2020 12:19:53 -0400
I built the AM BC filter that W1VLF made for one of my SDR servers as a test. Works well, but users now can only hear/see the strongest of AM BC stations. This is a RX only filter, not able to TX thr