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Re: Question about Ameritron AL-1200 Amp (Uses one 3CX1200Z7 tube)


 

The Ameritron outboard step start is the same circuit that is built into the Al-1200 amp.??


-----Original Message-----
From: cturnertuning <clark@...>
To: ham-amplifiers <[email protected]>
Sent: Wed, Jan 29, 2020 11:49 am
Subject: Re: [ham-amplifiers] Question about Ameritron AL-1200 Amp (Uses one 3CX1200Z7 tube)

Ameritron makes an outboard box that the amp or any amp plugs into that
has step start built in. Not sure whats inside. Maybe MOV?? I like to
build my own but this might be an option as you would not have to modify
the amp or any other amp you own. Other options would be a resistor/cap
across the contacts. I have a chart here somewhere to select the value.
It appeared in Electric radio magazine.? I have used this before on boat
anchor transmitter relays and the spark was gone.? I recently added MOVs
to my Johnson 500. It had 25 AMPS of startup current that banged the
hell out of the plate transformer.? Startup is now 2 to 3 amps at the
peak and rises up dead silent on key up.

C

> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf Of Don Roden
> Sent: January 28, 2020 10:18 AM
> To: [email protected]
> Subject: Re: [ham-amplifiers] Question about Ameritron AL-1200 Amp (Uses one 3CX1200Z7 tube)
>
>
>
>> It has a problem with giving a arc when the power switch is first turned on.
>>
>>? Cliff, KU4GW
>>
> Cliff,
>
> Is it a bang or a BANG ?? A tick or a TICK ?? a snap or a SNAP !? ?
>
> Do you hear it across the room ?? Does your butt lift off the chair ?
>
> Just trying to gauge the severity.
>
> Don W4DNR
>
>
>
>
>
>
>
>
--
Please let me quote you for your parts needs!
I offer a discount on Protunes with parts order!
Clark Turner
480-695-2898




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