[Top] [All Lists]

Re: [Amps] Swan Mark 1 for AM Service

To: "" <>, "(null) (null)" <>, "" <>
Subject: Re: [Amps] Swan Mark 1 for AM Service
From: Steven Katz <>
Date: Sat, 27 Aug 2022 18:09:36 +0000
List-post: <>
I agree.   The Mark II is much beefier with a separate power supply and 
separate cooling fan for the supply.

I've replaced three transformers in MK I units, way back when they were pretty 
new (1970s timeframe) and they failed in normal service.

I doubt a MK I can handle more than 100W carrier power on AM...if that...and 
don't forget to "tune up" at the PEP crest level power.

-----Original Message-----
From: Amps <> On Behalf Of gudguyham--- via Amps
Sent: Saturday, August 27, 2022 11:14 AM
To: (null) (null) <>;
Subject: Re: [Amps] Swan Mark 1 for AM Service

That is a pretty wimpy fan and transformer I that amp and AM will be tough on 
it.  I’d be really careful.

Sent from the all new AOL app for iOS

On Saturday, August 27, 2022, 11:10 AM, via Amps <> wrote:

Can the Swan Mark 1 amplifier be used for AM.  No mention of it in the manual.  
Would definitely have to use the CW voltage setting I believe.  I’m new to AM 
but want to try it just for the heck of it.

Mine has a new power transformer and rebuilt power supply.  Still has original 
3-400Z tubes in it with full output.

Bill KO4NR 

Sent from my iPhone
Amps mailing list

Amps mailing list
Amps mailing list
<Prev in Thread] Current Thread [Next in Thread>