Search found 18 matches

by ernestyn
Wed Sep 11, 2019 9:26 pm
Forum: SDR Antennas
Topic: Antenna Suitability
Replies: 6
Views: 5094

Re: Antenna Suitability

Not a big problem, when you know!
by ernestyn
Tue Sep 10, 2019 3:02 pm
Forum: General
Topic: Why do my posts suddenly need moderator approval?
Replies: 31
Views: 11983

Re: Why do my posts suddenly need moderator approval?

Thought a lot about this problem, but how can you let allow very clear tech errors to go in if you are examining posts? Sorrry but seems the examiner is ignorant or something, better do nothing.
by ernestyn
Sat Aug 31, 2019 5:50 pm
Forum: General
Topic: Why do my posts suddenly need moderator approval?
Replies: 31
Views: 11983

Re: Why do my posts suddenly need moderator approval?

Andy, problem is i do not see any rules. Can you show me?

Ernestyn
by ernestyn
Sat Aug 10, 2019 5:15 pm
Forum: SDR Antennas
Topic: "Low Noise" Vertical Antennas for Receiving
Replies: 12
Views: 7737

Re: "Low Noise" Vertical Antennas for Receiving

Dear sdrom33, thank for clarification of tbe stylus antenna. I was dubting it and asked for explanation and agree cannot work. For Wideband you need large thick shape but here very thin. Also difficult other antenna capacitor type so small. I am working with capacitor antenna big size and special sh...
by ernestyn
Sat Aug 10, 2019 5:08 pm
Forum: SDR Antennas
Topic: A very high low noise antenna
Replies: 3
Views: 2785

Re: A very high low noise antenna

The design principles of a capacitor antenna are based on the capacitor equation in free space where the capture cell is immersed in the static electric field. When the field is perturbed by radio waves the cell charges with an instantaneous variable voltage which then must go to the receiver. In th...
by ernestyn
Mon Aug 05, 2019 3:19 pm
Forum: SDR Antennas
Topic: DCF 77 77.5KHZ
Replies: 17
Views: 8767

Re: DCF 77 77.5KHZ

Dear VK3MHz,

the post is:

viewtopic.php?f=8&t=4788
by ernestyn
Sun Aug 04, 2019 5:03 pm
Forum: General
Topic: Nearby strong AM broadcasting station
Replies: 10
Views: 5949

Re: Nearby strong AM broadcasting station

Sorry I forgot. Use a piece of coax 1 quart wave. Leave open other end and cut small parts until strong station goes down a lot no more
by ernestyn
Sun Aug 04, 2019 4:28 pm
Forum: General
Topic: Why do my posts suddenly need moderator approval?
Replies: 31
Views: 11983

Re: Why do my posts suddenly need moderator approval?

I too have to wait, but is not long, but I have not seen any bad writings.
by ernestyn
Sun Aug 04, 2019 4:25 pm
Forum: General
Topic: Nearby strong AM broadcasting station
Replies: 10
Views: 5949

Re: Nearby strong AM broadcasting station

Dear VE2VAE, please use a notch filter narrow with the notch on the strongest AM station near. The notch stops it and you can listen far away MW. Perhaps use a low noise small as shown by Mike 1961 in The antenna chapter.