|[AMRadio] 4-400 first made when?|
uvc1 at verizon.net
Fri Mar 23 12:44:06 EST 2007
I've not researched the 4-400, but I can say for sure we replaced the=20
4-125's with 4-400's when we upgraded our broadcast transmitter from=20
.25kw to 1kw around 1961. The transmitter was a Collins, 20J and the=20
upgrade made it a 20V-2.
73 de W4MIL
Chuck, and the rest of the group,
I have a Collins 300 J basket case (no iron) I am changing it to a 20V2, =
advice on the 4- 400 swap, does anyone have any of the transformers, =
not have to be out of a Collins 20v2, just needs to be for 4-400's)
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