[Elecraft] How to demo P3/K3?

David Gilbert xdavid at cis-broadband.com
Mon Aug 9 14:25:04 EDT 2010



Ray, K2ULR, mentioned to me that VCR's probably use the sync pulses of a 
normal baseband video signal to sync the rotating heads, which would 
make them unusable for recording simple RF.   A DVR might not have that 
problem, although noise and signal levels could still be an issue.  It 
might also be the case that any standard video recorder (or at least the 
software associated with it) might try to insert sync pulses on playback.

I've seen USB video capture devices for $20 or less, but none seem to 
have a port for playback.  I'm pretty certain that many of the PCI card 
versions do, though.

Of course, it would always be possible to build a simple mixer that 
shifted a ham band down to lower than 200 Khz and record that with a 
decent computer sound card, and then mix it back up to feed it into the K3.

73,
Dave   AB7E



On 8/9/2010 6:11 AM, Randy Moore wrote:
> Looks like we may have someone bring a P3 to demo at the Huntsville (AL) Hamfest. Is there a way to demo it, connected to a K3, without an antenna?  We'll be deep in the Civic Center.
>
> 73,
> Randy, KS4L
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