[ARC5] Can yoiu say...

[Michael Bittner]

My AN/GRR-5 receiver regularly produced wiggly lines across the screen of my 
old Black & White, rabbit ears TV set.  The lines changed when the tuning 
knob was rotated, so this effect was not from the vibrator power supply. 
And the GRR-5 has two RF stages and is housed in a waterproof metal cabinet. 
Someone please explain that one.  Mike, W6MAB
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----- Original Message ----- 
From: "K5MYJ" <macklinbob at gmail.com>
To: "David Stinson" <arc5 at ix.netcom.com>; <Arc5 at mailman.qth.net>
Sent: Tuesday, June 13, 2017 12:40 PM
Subject: Re: [ARC5] Can yoiu say...


> In the 50's and 60's there were two primary causes of TVI.
>
> One was that TV receivers of that period had 21MHz IFs. 80M and 40M 
> multiplied directly to 21MHz. Then there was 15M. Straight in!
>
> The other was TV receiver overload. A lot of people just used "Rabbit 
> Ears". And real roof mounted antennas were not a whole lot better.
>
> I could (DID) jam my own TV set with nothing more than my grid dip meter!
>
> Bob Macklin
> K5MYJ
> Seattle, Wa.


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