On 2012-01-01, at 7:50 PM, Curt Nixon wrote: > Just picked up a Hallicrafters TO keyer for the vintage desk also. Same > keyer basically.
Hi Curt, I think that the one major difference betwixt the EICO & the Hallicrafters TO keyer is that very same "...weak link" in the chain that affected mine here, i.e. the TO used (I believe) a sealed mercury-wetted keying relay, whereas the EICO went with that reed-relay-in-a-field-coil route to achieve its external keying... I say weak link as no offence to the EICO designers, but rather, as a potential source for trouble that may well require the owner's attention at some point in its future...trouble is, if said owner is not all that familiar with the whys & wherefores of reed relays / field coils (my right hand is raised!), then one can through a LOT of vexing gyrations & travails in the trouble-shooting process that are simply not necessary...! : >) ~73~ de Eddy VE3CUI - VE3XZ
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