[Milsurplus] [ARC5] WTB : ATD Tuning Unit

[Ray Fantini]

Back when I was in high school I had an ATD for use in my novice station, the FCC had just allowed VFO around that time and I was only running about six hundred volts on the plate so figure it was under seventy five watts or so and it worked OK on 80 meter CW, also had lots of excitement one night when my home built open frame power supply had one of the filter capacitors exploded. Was wondering why it was getting hot and making a ticking sound. Then Boom! The question I would have is what was the ATD built for? It appeared to me to be something like a poor man’s ART-13 being that was the way I was able to get it back in the seventies being no one wanted it unlike an ART-13 that had some small value to the AM people. So where was it used and would it have been replaced with an ART-13 at the first opportunity?

Ray F/KA3EKH

-----Original Message-----
From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Mike Morrow
Sent: Wednesday, November 18, 2015 9:42 AM
To: ARC5; List Milsurplus
Subject: Re: [Milsurplus] [ARC5] WTB : ATD Tuning Unit


> I’m in the market for a 9 to15.8 Mc Tuning Unit (CRR-47211) for an ATD 
> transmitter.

That's THE rarest component in the ATD system.  The manual I have implies that it was not available when the manual was issued.  I've read one claim that it exists, but I've not seen one.  The LF/MF TU wasn't issued with the ATD either (even though the LF/MF antenna unit was), but those can sometimes be found...I found one for my ATD on ebay.

But the CRR-47211 seems to be only a little more common than the CBY-46107.  :-)

Mike / KK5F

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