On 12/11/2010 12:47 PM, Dennis OConnor wrote:
> Hsu, those multi deck band switches bring hot RF carrying wires from the
> hi-power tank circuits, close together which is not desirable... Yes, I
> understand that it has been done that way from the early days of ham radio,
> but it is still a poor way electrically...
>
> As far as the switch you show, from the pictures it looks like it is well
> made from quality materials..
>
> Let me make a suggestion that you take a look at how Henry Radio handled the
> RF switching on the tank circuit on their remote tune 3/4/5/8 K series of
> amps... The band switch for the tank coils would be a single pole, 6
> position switch, that pulls in relays elsewhere in the tank (grid)
> compartment...Henry hand made their own high current (and high voltage bypass
> on the plate supply RF choke) relays using linear pull, AC solenoids and
> adding the RF contacts onto the solenoid rod...
>
I've seen this done on a very large scale in industry although probably
not as large as you saw in an earlier life. <:-)). It worked very well.
The only real difference would be one of scale...These had bundles of
500 MCM cable running to them.
73
Roger (K8RI)
> denny / k8do
>
>
>
>
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|