[Hammarlund] NOISY FRONT END TUBES

[Roy Morgan]

On Jun 26, 2008, at 1:07 PM, wq3x at epix.net wrote:

> I believe the Collins Compendium is only available from the  
> publisher of Electric Radio.

See:
http://www.ermag.com
Under Collins Service Modification Compendiums, see:

Collins 75A-4 Modification Compendium
(Direct link:  http://www.ermag.com/index.cfm?v_link=product_detail&v_key=224 
  )

"Collins 75A-4 Modification Compendium consists of 92 pages in an  
indexed 3-ring binder with all the factory modification bulletins from  
Collins Radio Company, and all the articles printed in CQ, Ham Radio,  
QST, and Electric Radio Magazine over the last 45 years.   Price:  
$20.00"

> Beware though because many of the mods are taken from old ham  
> magazines and are very outdated and may or may not work.

I think all the mods presented will work, but may not work well.

> Some of them are also real irreversible butcher jobs before people  
> cared much about collectability.

Very true.

> Personally I would not put much faith in anything in there but it is  
> interesting reading none the less.

But you can put faith in some of them, just pick the right ones!

By the way, AES now has the 7360 sheet beam mixer tube discounted just  
now to $37 each.

Roy

Roy Morgan
k1lky at earthlink.net
Lovettsville, VA 20180