[AMRadio] DX 60 mods


rbethman rbethman at comcast.net
Fri Jul 2 15:45:55 EDT 2010


  Joe,

I do indeed have the "over modulation" modification, however I believe 
that is one of those published in ER.

The one that I *DO* have, that most likely is NOT out and published, is 
not very well documented.  However, Bill gave me a complete "FINAL 
Heath" manual, with the schematic containing the PTT mod.  The audio mod 
is there, and I do not remember off-hand if the 160mtr mod is.

The only thing I have in a transmittable form would be the "last" 
schematic.  I certainly haven't scanned the remainder - which included 
the ER articles.

I have NO idea what size files that you can handle.  I have broadband 
connectivity, so zI can either send the schematic in its three pieces, 
OR I can load them on my website for download, giving you the direct 
links for the three pieces.  BE ADVISED!  Each is approx 3MB in size!

I believe that you are quite able to read them and figure them out!

(I type by the Columbus Method - seek out, land upon - and discover)  
All typos are inadvertent and due to going too fast!

Bob - N0DGN

On 7/2/2010 3:38 PM, crawfish at surfmore.net wrote:
> I would like to see those "last" mods. I have several of the Electric
> Radio issues, and Bill from Bowie had some great articles in them!
>                                                       Joe W4AAB
>
>
>>    If one is "really" inclined to consider Audio mods for the DX-60, I'd
>> give serious to the mods published by the late WC3K.
>>
>> Bill was a satellite engineer, and spent a large part of time in his
>> "laboratory"/ham shack, working on the DX-60.  He made a number of
>> modification, including adding 160Mtrs, PTT, and audio.
>>
>> He used his to drive a 30S1 on occasion, along with a 30L1.  sometimes
>> it was barefoot.
>>
>> There really is no need to attempt to make it a plate modulated Tx.
>> Controlled carrier as it was designed and built, works very well.  The
>> problem is that some operators push the audio too hard.  This is
>> particularly an issue sine the audio gain is a pot INSIDE the radio,
>> only accessed by opening the cabinet.
>>
>> Bill, WC3K, had a simple mod for observing the level of modulation,
>> without drilling holes.
>>
>> Most if not all were published in Electric Radio.
>>
>> I "may" have the very last mods by him, that did NOT get published due
>> to his unfortunate departure.
>>
>> Bob - N0DGN



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