Date: Thu, 25 Jan 1996 08:34:41 -0700
From: "Robert C. Neff" <n7ory@primenet.com>
Organization: Primenet
To: thharrel
Subject: Simple MOD for PRO-2035 for USB/LSB MODE

You are probably familiar with using the 455KHz stage output of a 
scanner for receiving signals on a separate receiver. If not, here's a 
quick way to do this with the PRO-2035.

Supplies you'll need:  Drill, Female RCA jack, 2 inches of wire, 
soldering iron.

Open the top cover and disconnect the speaker. Set it aside.

Look inside on the PCB for TP2. This will be a small metal post standing 
straight up about 1/4 inch from the PCB. It will be located about 1 1/2 
to 2 inches fron the back of the scanner, in the center.

Take your drill and tap a small hole in the back of the scanner, 
anywhere you like so long as it does not come in contact with any other 
components or the top cover. (I placed mine directly above the audio 
jack since it's a shorter distance to the TP2 455KHz point.)

Mount the RCA flush, and solder a wire from the center connector of the 
jack to the top of TP2. (Keep length of as short as possible.)

Re-connect the speaker, and close the case.

Directions for use:

You'll need to make a short run of cable. About 2 feet of any coaxial 
cable with a PL-259 on one end and a male RCA jack on the other.
Make sure though that you place a small capacitor in series for AC 
coupling.

   ---  PL-259          Capacitor               RCA     ____
<--   |---------------------||--------------------------    ---
   --- \                                               /----
        |                                              |
       ____                                           ____
       ////                                           //// 

Connect the cable between the scanner and a Shortwave / Ham receiver 
that is capable of tuning down to 455KHz.  Turn the scanner on and 
select a frequency, likewise the shortwave, however you'll need to leave 
the shortwave on 455Khz.
You should now be able to listen to the signals that the scanner picks 
up on the shortwave rig. Make sure you select the appropriate mode 
though, such as AM FM USB or LSB.

NOTE:  Signal strength indications will not function normaly. A signal 
of greater than S-9 are normal even when there is not signal being 
received at the scanner. (The SW is still receiving one! The scanners!)

I did this mod the other day, works good, looks good.
If you have any questions fell free to mail me.

Rob Neff
n7ory@primenet.com