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Re: [Amps] DRAKE L-4 AMP - 'rewiring the ON/OFF switch"

Subject: Re: [Amps] DRAKE L-4 AMP - 'rewiring the ON/OFF switch"
From: Stan Gammons via Amps <>
Reply-to: Stan Gammons <>
Date: Thu, 01 Dec 2022 02:47:30 +0000
List-post: <>
If the idea is to take the burden off the hard to find on/off switch, my
solution was making an external on/off switch using a box with
appropriate receptacle and a double pole toggle switch. I have the kit
to repair the L-4B switch, but expect I'll never need it since I leave
the power turned on all the time and power the amp on with the external
on/off switch.



On 11/30/22 20:31, gudguyham--- via Amps wrote:
> I assume you want to use a 120v relay as a contactor to take the burden off 
> the on/off switch.  There’s ALWAYS 120vac available on the same terminals the 
> blower connects to.  NEVER use chassis ground for a neutral return.  Simply 
> hook into the blower terminals for 120v AC. Shift the wires from the original 
> on/off swith over to the relay contacts in the same configuration.  The 
> CW/SSB switch is part of the on/off switch but is separate electrically.  I 
> assume you’ll keep it as is.
> Sent from the all new AOL app for iOS
> On Wednesday, November 30, 2022, 9:03 PM, A Lawrence Fibich 
> <> wrote:
> Might be a bit hard to explain - so if you have/know this unit perhaps can 
> talk off line?  I am rewiring the ON/OFF switch so the 220VAC doesn't go 
> through the switch. Using an AC relay (output/control side) - to 
> Switch/connect the power lines previously mounted to the ON/OFF switch. Then 
> the ON/OFF switch is now used to 'turn on' the relay - power to the relay - 
> comes from the Filament circuit via the ON/OFF switch to one side of the 
> input/control on the AC relay - and the other terminal on the input of the AC 
> relay is then grounded.Something just doesn't 'feel right' in having the one 
> side 'grounded' - and asking/wondering if a problem. Another thought is ? if 
> I should use a resistor of some value to decrease the voltage in this circuit 
> going to the chassis ground? Thoughts and experience doing this on this unit 
> is appreciated.73Larry
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