I know that the ETO 76 and 374 series amps have been discontinued for
quite some time. While I was at Dayton a year or two ago, I stopped and
asked the ETO rep if the 77SX version was still in production? I think
he said yes. Can anyone verify this? Isn't it true that the 77 series
included the 77DX single tube version and the 77SX dual tube version?
I have also heard these amps referenced as 77D as opposed to 77DX (and I
guess the same for the 77S/SX). Does anyone know what the difference
between the letter suffixes? (S, D, SX, DX) Also, for you guys that
have one of these amps (1 & 2 hole) what is the "realistic" power out of
these amps running wide open?
I also have seen reference to an external transformer that was used
with one of these 77 series amps, I guess it was an option to beef up
the power supply, any truth to this?
I see them for sale from time to time used but how much were they new?
How is the reliability of the 2 hole version, RTTY and SSB?
Seems that a 2 hole version would last a lifetime at 1500w out
regardless of the mode.
Thanks for the info,
Rick N4RF
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