[Boatanchors] Anyone have Hammarlund HX-500 transformer mod?

[Peter Markavage]

You could have saved yourself time and money if you came to me first. The
addendum is called"Improved Power Transformer Replacement", Instruction
Sheet No,. K52778-1. It is 5 sheets. And there were at least 12 more
sheets on other service bulletins and addenda.

Pete, wa2cwa
http://www.manualman.com

On Sun, 17 Feb 2008 17:24:54 -0600 "David" <texasroadrunner at comcast.net>
writes:
> Somewhere, there's a Hammarlund HX-500 service bulletin/instruction 
> addendum which describes the conversion of the powersupply from a 
> pair of 12AX4s to a single 5RU4GYB and replacing adding a solid 
> state rectifier for the bias.
> 
> After purchasing 3 HX-500 manuals from separate manual vendors 
> (W7FG, Surplus Sales Nebraska, Radioreprints), I've got a collection 
> redundant papers including service bulletins and notes, but all 
> missing the important transformer/power supply "Improved Power 
> Transformer Replacement" instructions.
> 
> It's my understanding that after 1 year from it's introduction, 
> Hammralund decided to make this change.  Some were factory modified, 
> and some that were already in the field could by a field kit and/or 
> wing it on their own.
> 
> I'm interested in purchasing a copy of this mod, if someone has it 
> or can refer me to a vendor who might.
> Thank you in advance
> -dave
> W5OC
> _______________________________________________
> 
>