[Amps] Band switch

[DJ7WW]

Then I guess it contains a band switch.

73
Peter

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Roger (K8RI)
Sent: Sonntag, 12. Dezember 2010 00:56
To: amps at contesting.com
Subject: Re: [Amps] Band switch



On 12/11/2010 1:20 PM, DJ7WW wrote:
> As far I know all Henry amps made use of roller inductors
The 2K4 didn't.

73

Roger (K8RI)
> 73
> Peter
>
> -----Original Message-----
> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
> Behalf Of Dennis OConnor
> Sent: Samstag, 11. Dezember 2010 18:47
> To: amps at contesting.com
> Subject: Re: [Amps] Band switch
>
> 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...
>
>
> denny / k8do
>
>
>
>
>
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