I use Emtron DX-4 amps in my contest station. I chose them to ensure my
guest ops do not blow them up. They have excellent fail-safe protection.
One by one, however, I am having problems with the vacuum relays. They are
developing intermittent contact on receive. Banging on the front panel is a
temporary cure.
Emtron's remedy is that I need to run the amps at full output to have them
operate effectively and reliably. I choose to run them at the legal limit.
That notwithstanding, I understand that there are vacuum relays that are
designed for low-current applications. Also, Emtron mounts the relays
vertically instead of horizontally (as Alpha used to do). What is the
experience of the group on the physics of vacuum relays?
Tom Taormina, K5RC
Virginia City NV
Home of W7RN and K7RC
http://k5rc.cc FOC 1760
"Communication is the problem to the answer" - 10cc
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