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- From horak@convex.com Tue Jun 1 13:06:25 1993
- Newsgroups: alt.radio.scanner
- From: horak@convex.com (David Horak)
- Subject: Pro2005/6 SSB MOD HERE!
- Nntp-Posting-Host: eugene.convex.com
- Organization: CONVEX Computer Corporation, Richardson, Tx., USA
- Date: Mon, 31 May 1993 18:04:59 GMT
- X-Disclaimer: This message was written by a user at CONVEX Computer
- Corp. The opinions expressed are those of the user and
- not necessarily those of CONVEX.
-
-
- I had a few requests for this mod so I thought everyone would benefit...
-
- This is the mod for adding SSB capability to your Pro2005/2006. It is
- taken in part from Bill Cheek's Scanner Mod Handbook Volume 1. As long
- as you have a shortwave receiver with an external antenna jack and
- capability to tune to 455 KHz, you can interface it to the Pro2006 with
- this mod. It is best if you use a static safe work environment to
- perform this mod and you should have some technical knowledge. Also, a
- schematic would be helpful but is not necessary.
-
- You will need the following parts:
-
- Output jack (I use a 1/8 mini earphone jack but some like a BNC. The
- 1/8 mono jack is easier to install because you don't have
- to drill as big a hole in the back of the unit)
-
- .01 uF capacitor
-
- 5 Kohm resistor (1/4 watt)
-
- 6 inches of mini coax or other shielded cable
-
- A cable to run from the 2006 to your shortwave. I use the shielded
- cable that has the 1/8 plug on one end and a phono plug on the other
- end (1992 catalog Radio Shack P/N 42-2444 works for me). The phono
- plug is perfect for the antenna input of my DX440 shortwave receiver.
-
- The first step is to remove the cover of the unit and drill a hole in
- the back of the 2006 for your 1/8 or BNC plug. (You will want to wrap
- some tape around the drill bit about an inch from the end to keep it
- from cruising right on into the electronics once it punches through the
- metal!) Solder the 5K resister to one end of the .01 uF cap. Solder
- the other end of the cap to the shielded coax wire. Solder the other
- end of the coax to your 1/8 phono plug (or BNC) and ground the cable at
- this end. Now that the cable is in place you are ready to connect it
- to the 455 KHz source which is D33. It is on the top circuit board
- near the middle left, not too far from a huge capacitor. Solder the
- end of the resistor to the cathode of D33. (This should be the top of
- the standup part) Now you can test it out before you put the cover
- back on to make sure you did everything correct. You should be able
- to tune to some local airport or CB frequency on your 2006 and receive
- the same thing on your shortwave (with it tuned to 455 KHz and hooked
- up to the 2006 of course). If you tune something on your scanner that
- is SSB, you should be able to switch your shortwave to SSB and tune in
- the signal just fine. Beware of one thing, since the 2005/6 only tunes
- in 5 KHz increments minimum, you may notice from time to time that the
- signal on your shortwave isn't real clear. It may be that you will
- need to tune the shortwave anywhere from 451 to 459 KHz to tune in the
- signal well!
-
- If you don't succeed or this description has you baffled you probably
- shouldn't be doing the mod in the first place. I assume no
- responsibility for screwups. Good luck
-
- David
-
-
- Copied from the QRZ! Windows Ham Radio CDROM
-
-