[Test-Equipment] GR 1800A VTVM

[Dale H. Cook]

At 03:13 PM 12/19/2013, Richard Knoppow wrote:

>I meant adapters from 774 to 874 or the reverse.

Those would be the proverbial hen's teeth. I don't think I have any 774s in my collection. I wish I could remember when and where the article describing roll-you-own was published. If anyone has old indexes to ham mags they could check. The article was about the GR Type 821-A Twin-T Impedance-Measuring Circuit, and it was published (I think) in the late '70s, probably in CQ or 73 (I'm pretty sure it wasn't QST).

Dale H. Cook, GR / HP Collector, Roanoke/Lynchburg, VA
http://plymouthcolony.net/starcity/radios/radtop.html