Re: Topband: recording off the air

2020-01-21 Thread W0MU Mike Fatchett
Dxlabs supports this. https://www.dxlabsuite.com/dxlabwiki/RecordAudio    N1MM logger+ has a recording mechanism but there is a bunch of apps that could do this.  As all the top contesters for many contesters much record the contest for possible review. W0MU On 1/21/2020 11:25 PM, terry burg

Topband: recording off the air

2020-01-21 Thread terry burge
Hi folks, Is there some kind of software or accessory unit that would have the ability to record off the XCVR and easily run it back to listen again to the exchange? I'm kind of thinking of something like digital TV where you can run it back quickly while watching some show. Seems like it would

Re: Topband: Any Linrad selective limiter noise blanker experts here?

2020-01-21 Thread Richard (Rick) Karlquist
The Kalman filter still generates a blanking pulse like the conventional circuit. Feedback loops adjust the width and timing of the blanking pulse. "Amplitude" is not applicable. The frequency of the blanking pulse is supplied from the power line in the shack (EG 60 Hz). The feedback loops ave

Topband: Beverage impedance change in cold WX solved

2020-01-21 Thread VE6WZ_Steve
A few days ago I posted a video explaining some experiments I did adding short radials to my feed and termination grounds on the Beverage. During that week temperatures went as low as -41 C at the station. The mystery has been solved. I wondered if the frozen ground was limiting conductivity and

Re: Topband: Any Linrad selective limiter noise blanker experts here?

2020-01-21 Thread Jim Brown
On 1/20/2020 2:28 PM, Richard (Rick) Karlquist wrote: In most cases, line noise is a repeating function with a frequency of 50 or 60 Hz.  To make an  effective noise blanker in a contest, you simply have to make a filter that only responds to harmonics of the line frequency and then generate the