[ARC5] AN/ARC-12, A.R.C. Type 12, Other Things.

[Mike Morrow]

Hi Dave,

I didn't mean my post as a correction, just a lead-in for remarks on the AN/ARC-60 and its CV-431A.  For many years I assumed that it must be pretty deaf with only a 1N82 diode mixer as its entire UHF front end.  I was surprised that its rated sensitivity is the same as the 1950s/1960s most commonly-used UHF-AM command sets AN/ARC-27 and -55.

The AN/ARC-60's sensitivity (5 uV for 6 dB s/n) is in fact quite a bit better than the USN's RT-307/ARC-48, a small four-channel crystal-controlled UHF-AM set (5 uV for 3.4 dB s/n).

There's a lot of respectable engineering that was put into the components of the A.R.C. Type 12.  It's a joy to study it from the associated manuals.  I know you have a similar attitude.

73,
Mike / KK5F

-----Original Message-----
>From: David Stinson <arc5 at ix.netcom.com>
>Sent: Oct 4, 2020 12:04 PM
>
>I stand corrected, Mike.  I should have remembered.
>Probably don't remember half what I used to.
>Thanks for the clarification.
>73 Dave AB5S