[Top] [All Lists]

Re: [Amps] AL572 for DXpedition, parts to take along

To: "Joe Subich, W4TV" <>
Subject: Re: [Amps] AL572 for DXpedition, parts to take along
From: Jeff Kinzli N6GQ <>
Date: Wed, 16 Apr 2014 14:31:49 -0700
List-post: <">>
Thanks, Joe, duly-noted.

73 de N6GQ

On Wed, Apr 16, 2014 at 2:30 PM, Joe Subich, W4TV <> wrote:
> A full set of power supply caps and the equalizing resistors,
> A spare set of rectifier diodes
> (as an alternative - consider a complete power supply board)
> spare set of parasitic suppressors
> a spare metering board
> The original T/R relay (in case f PIN diode failure).
> 73,
>    ... Joe, W4TV
> On 4/16/2014 5:11 PM, Jeff Kinzli N6GQ wrote:
>> Hi all...
>> I'm prepping for a trip to Africa and plan to take an AL572 (cheap,
>> light, dispensable, plentiful, and does about 1200w out). While I
>> realize there are better amp choices in terms of durability, etc. this
>> is the one I've chosen with the above factors in mind. It is going to
>> be the primary amp in an SO2R setup, and if it fails, I still have a
>> secondary pretty solid (Acom) amp I can put into primary. I'll also
>> have the QSK board installed. Over a week I'd expect to put about 150
>> hard hours on the amp.
>> So, if you were taking the AL572 with you to a place where parts are
>> non-existent, and wanted to have a chance of keeping the amp online in
>> 100+F heat in a rugged duty cycle (fast CW, fast SSB) what would you
>> take? My plan is the following:
>> - spare set of tubes
>> - plate choke
>> - a couple spare HV caps for the PS
>> Are there other things that would be smart to take along? I'm thinking
>> along the lines of what's reasonable to both take along, and field
>> repair with - and while a spare set of tubes is marginal in that
>> sense, it seems to me that at least with 572Bs it might not be a bad
>> idea. Also any areas of the AL572 that are inherently weak?
>> Anything else? I'd also be interested in hearing about any other mods
>> folks would suggest to strengthen the amp for the long haul (I've seen
>> the W8JI mods).
>> Thanks,
>> Jeff N6GQ
>> _______________________________________________
>> Amps mailing list
> _______________________________________________
> Amps mailing list
Amps mailing list

<Prev in Thread] Current Thread [Next in Thread>