[Amps] MLA-2500 Tube Conversion

[Roger Parsons]

I have seen that comment previously. What I have never seen are any numbers or documents to support it. If any non-anecdotal sources exist I would be interested to see them.

I converted a Clipperton L to GI-7Bs a while ago and I believe that its linearity is not only acceptable for amateur radio purposes, but better than many transceivers.

73 Roger
VE3ZI



On Sunday, 10 October 2021, 21:17:47 GMT-4, Carl <km1h at jeremy.qozzy.com> wrote: 





The GI-7B is fine if all you care about is CHEEEEEP.

It also is a horrible tube for a linear and would sound great on 11M


----- Original Message ----- 
From: "Roger Parsons via Amps" <amps at contesting.com>
To: "Amps" <amps at contesting.com>
Sent: Sunday, October 10, 2021 5:41 PM
Subject: [Amps] MLA-2500 Tube Conversion


>I converted an MLA2500 to a single 3CX800A7 some years ago, and it works 
>fine. If I was doing it again I think I would probably use a pair of GI7Bs 
>which are much cheaper.
>
> I don't think you need an extra filament transformer - the existing 
> transformer has a 12V 4A winding which is plenty. (As others have 
> mentioned, the voltage will probably be too high and a series resistor is 
> called for.) The 6V winding can then have a voltage doubler on it to 
> supply relays and and LEDs.
>
> 73 Roger
> VE3ZI
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps 


---
This email has been checked for viruses by AVG.
https://www.avg.com