[R-390] SSB-Modified R-390A

[Llgpt1@aol.com]

In a message dated 7/11/2003 12:16:46 PM Central Daylight Time, 
dwade@pacbell.net writes:

> Jim and the group,
> 
>   A very interesting report!  Pictures posted somewhere would be an 
> excellent idea.
> 
>   I too have what appears to be a factory or professional SSB mod.  
> Its a Motorola contract tag with an EAC if deck.  Under the chassis 
> is an extra module with a 6U8 and 2 (I think) crystals.  Note in the 
> pics (link below) that the silk-screened panel has been changed.  
> Looks factory/professional to me.
> 
>   Pictures are at:  http://kg6zi.homestead.com/
> 
>   (Sorry about the pop-ups....I have no control over them.)
> 
>   I had hoped to be well into the receiver by now, but an accident 
> while engaging in another of my avocations (cycling) is keeping me 
> from picking up much more than a couple of pounds, much less a 
> boatanchor!  I am not entirely sure if the mod is simply a fixed 
> frequency BFO, or if other changes have been made for SSB.
> 
>   Perhaps others can give more history about military/commercial 
> attempts to modify the '390A for SSB.
> 
>     Feel free to comment on the pictures.  I would love to find some 
> documentation on this particular variant.  Note that the email on the 
> site is outdated...use the mail addy in this post to write if you 
> wish.
> 
>       Dennis
> 

A not uncommon modification. Several variations of this particular mod are 
around. Some have the 6U8 and the USB & LSB X-tal on the audio deck, some are 
inside the front panel, others as in your pics. The article in ER covered it.

Also covered in Paolo Viappiani's R-390/URR  R-390A/URR Handbook with photos 
and schematics.


Les Locklear

"The two most common elements in the universe are hydrogen and stupidity"

Harlan Ellison


--- StripMime Report -- processed MIME parts ---
multipart/alternative
  text/plain (text body -- kept)
  text/html
The reason this message is shown is because the post was in HTML
or had an attachment.  Attachments are not allowed.  To learn how
to post in Plain-Text go to: http://www.expita.com/nomime.html  ---