[Elecraft] [KX3] Re: filter for those with nearby AM broadcast stations

Phil Kane k2asp at kanafi.org
Fri Dec 20 12:59:44 EST 2013


On 12/19/2013 8:13 PM, Bill Frantz wrote:

> When I was recently testing some Collins gear, built between 1960 and
> 1975 for a local woman who inherited it and wanted to sell it, I noticed
> that the RF connections were RCA jacks. The RF output from the
> transmitter which was rated 160 watts input to the final amplifier was a
> RCA jack. (The manual said it was about 100 watts output.) The only
> exception was the high power amp which had RCA for input and N for
> output. How things have changed.

When Collins came out with the RCA jacks early in my ham career, it made
a very heavy push that only a 50-ohm load be connected to it - lest the
jack self-destruct from a standing-wave high voltage!
----
73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon


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