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- From netcomsv!decwrl!elroy.jpl.nasa.gov!swrinde!gatech!howland.reston.ans.net!agate!stoll Mon Jul 12 21:14:13 PDT 1993
- Article: 43385 of rec.radio.amateur.misc
- Path: netcom.com!netcomsv!decwrl!elroy.jpl.nasa.gov!swrinde!gatech!howland.reston.ans.net!agate!stoll
- From: stoll@ocf.berkeley.edu (Cliff Stoll)
- Newsgroups: rec.radio.amateur.misc
- Subject: Wideband Modification for Icom IC W21AT Dual Band HT
- Date: 13 Jul 1993 02:06:49 GMT
- Organization: U. C. Berkeley Open Computing Facility
- Lines: 24
- Message-ID: <21t5bp$4r9@agate.berkeley.edu>
- NNTP-Posting-Host: headcrash.berkeley.edu
-
- The Icom IC W21AT handi-talkie normally receives two bands:
- 136 to 174 MHz and 440 to 450 MHz.
-
- You can program it to receive
- 50 to 300 MHz and 300 to 999 MHz.
-
- To do this, turn it off, then simultaneously hold down
- the # and the B keys while turning it on. Keep them pressed
- for 2 seconds after turning the rig on.
-
- The LCD display will go through a self test, and you'll
- then have a wideband receiver. It's not very sensitive
- far from the ham bands, but it's handy for listening to
- 6 Meters or as a portable scanner.
-
- Note that this modification does not require any cutting of
- diodes or rewiring -- it's entirely front panel.
-
- Looking at the schematic, there is a way to
- cut two diodes to permit transmitting outside the Ham bands (eg MARS).
- However, I cannot find the diodes on the PC board (it's crowded in there!).
-
- Cheers es 73's,
- Cliff Stoll K7TA
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