T15 ARC-5 Transmitters

[Ed Sharpe]

Yes paul, we used to look at the list of the transmitters they made in the ARC
series in high school with the same evil thoughts! Never courld find one but did
play with an art 13  with the low freq module modified a bit........
Ed Sharpe archivist for SMECC

Paul Litwinovich wrote:

> Back in the 70's a bunch of my highschool buddies and myself built a pirate
> AM station
> with a T-15 ARC5. We got about 100 watts out of it, and using a  50 ft coil
> loaded vertical with a very extensive grounding system covered our home town
> and the surrounding communities. Car radios were quite sensitive back then
> and you could hear it about 15 miles out in a car. We operated on 640 khz
> which was the old CONELRAD frequency which had just been decommissioned with
> the advent of the EBS system.
>     An interesting point, just two weeks ago I was able to use the same
> antenna design again, this time for legitimate purposes, when I had to
> construct an emergency antenna for AM station  WRIV 1390, Long Island , NY,
> which had lost their tower. I had them back on the air in less than 6 hours
> with full contour strength (5mV/meter) over their city of license using 500
> watts TPO.  The only difference this time was to add a capacitive hat to
> help cancel some of the small antenna's reactance. The performance in the
> surrounding burbs isn't as good as the 1/4 wave stick, but compared to no
> signal at all, it sounds pretty good.  So it is possible to get decent
> coverage with an undersized antenna if you work at it.
> -
> Paul Litwinovich
> Chief Engineer,
> WSHU/WSUF/WMMM
> N1MUC
>
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