Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss

Old Schematics.

2 views
Skip to first unread message

Bill

unread,
Jul 5, 2009, 8:03:36 AM7/5/09
to
I have a RME DB-20 RF pre-amp that needs a schematic for me to check
against. This unit was made around 1938 and uses steel tubes. They were
very popular during the war because they isolated the oscillators from
putting anything back into the antenna for the enemy to zero in on.
Mine is just for short wave listening and I have no continuity on the
ground side of the antenna. If anyone can e-mail me a gif or pdf of the
schematic I would be forever grateful.
Thanks much,
Bill Baka

P.S. These had 3 tuned stages and 2 tubes worth of amplification so they
were pretty good for their time. I only get about 10-15 dB now but it
still helps.

Richard Knoppow

unread,
Jul 5, 2009, 8:47:13 AM7/5/09
to

"Bill" <bb...@comcast.net> wrote in message
news:Mw04m.10374$Dx2....@flpi146.ffdc.sbc.com...

There are schematics at BAMA http://bama.sbc.edu/
A Google search found lots of hits.


--
Richard Knoppow
Los Angeles
WB6KBL
dick...@ix.netcom.com

Bill

unread,
Jul 5, 2009, 9:07:54 AM7/5/09
to
Thanks all too much. I just printed them and found that one set is
better than the other so I have a good, readable schematic to refer to.
Now to find the soldering iron.
Cheers,
Bill Baka, happy now.

MoiInAust

unread,
Jul 12, 2009, 8:33:22 PM7/12/09
to
Got into the site. Tried to access documents and log on as anymous user but
kept getting rejected.

??

"Richard Knoppow" <dick...@ix.netcom.com> wrote in message
news:OYCdnfjr2LtLPc3X...@earthlink.com...

Bill M

unread,
Jul 12, 2009, 8:45:09 PM7/12/09
to
MoiInAust wrote:
> Got into the site. Tried to access documents and log on as anymous user but
> kept getting rejected.

Thats because all of the user connections are in use. I think it only
allows 10 at a time. That login business only appears as some browser
default in such a case. No login is required.

Try the mirror site. It is capable of handling much more traffic.

http://bama.edebris.com/manuals/

-Bill

Richard Knoppow

unread,
Jul 14, 2009, 5:28:32 PM7/14/09
to

"MoiInAust" <us...@user.com> wrote in message
news:4a5a80db$1...@dnews.tpgi.com.au...

> Got into the site. Tried to access documents and log on as
> anymous user but kept getting rejected.
>
> ??
>
> "Richard Knoppow" <dick...@ix.netcom.com> wrote in
> message
> news:OYCdnfjr2LtLPc3X...@earthlink.com...
>>

Snipping here................


>> There are schematics at BAMA http://bama.sbc.edu/
>> A Google search found lots of hits.
>>
>>
>>
>>
>> --
>> Richard Knoppow
>> Los Angeles
>> WB6KBL
>> dick...@ix.netcom.com
>>

The problem is that the BAMA server gets overloaded.
The request for a username and password is a symptom of
this. The same material is available at a mirror site:
http://bama.edebris.com/

This also has faster downloads.

0 new messages