Re: [IRCA] reactive terminations. Cheepie FM transmitter

[Arthur W Peterson <awpetersonrpf@xxxxxxxx>]

Charlie,

        How about a cordless microphone transmitter?  I think that they
operate on FM and are not too expensive.

Art Peterson
Richmond, CA
----------------------------------
On Thu, 06 Sep 2007 22:18:30 -0400 Charles A Taylor <MWDXer@xxxxxxx>
writes:
> 
> 
> Patrick Martin and fellow EWE lovers,
> 
> Instead of terminating my EWE with the standard resistive 
> termination,
> I've been trying reactive terminations with the thought that I may 
> be
> "slew" nulls somewhat.
> 
> Instead of 1,000 ohms termination, I tried a 1,000-pF capacitive
> termination and noted that some stations on some frequencies 
> dropped
> considerably in strength as against their co-channel. I have also
> tried a 500-uH termination with similar effects.
> 
> This is something to look into, but I've got to locate a cheepie
> FM transmitter to connect to my R8B audio output so I can go out
> an try different terminations while listening on my DX-398 (or
> AM/FM earphone radio).
> 
> ANYONE KNOW OF SOME CHEAP LITTLE FM TRANSMITTERS. Not the Ramsey
> professional FM transmitter sort of thing, but something that
> will broadcast a nice FM signal 100 feet or so.
> 
> I eliminated the ground on my EWE. Buried a return wire and
> disconnected the grounds on both ends of the return wire. Now
> what I have is actually a loop and not a EWE, to be technical.
> 
> Boy is it quiet! Our TV set is about 125 feet away from my EWE/
> loop, but the 15.75-kHz harmonics are weak enough that almost
> none of them block daytime reception of weak groundwaves.
> 
> I'm spoiled for sure. If the woods behind my house ever get
> developed, I'm in for trouble QRM-wise. Well, we have plans
> to move within the next few years but I hate to lose this RFI
> free environment!
> 
> 73 de Charles 
> 
> 
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