Dreaming on for a few more years about the RX :-)
Reposted here, because of a limit on crossposting by E-S,
but nevertheless germane to these two NGs... On 11/07/2017 11:50, Gareth's Downstairs Computer wrote: Taking my cue from bandswitching in other designs, and being motivated by the catacomb in the HRO NC100X, I wonder if any have encountered bandswitching by cam driven microswitches? I presume that the contacts in microswitches must be similar to those in small relays, and, being mechanical, would not be subject to electrical failure. What I envisage is that the most HF coils would be mormally switched in by the microswitch closest to the tuning cap, and then when the big cam (Big K? :-) ) slides along to activate that microswitch, the next lower frequency coil takes over, and so on and so forth. Having had one failure by dropping the catacomb mechanism on one corner, I'm sort of losing heart at the prospect of making up 50 sliding contacts. |
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