Icom-W21E Help Pse
stephen...@virgin.net
airband or rx coverage please ?
Many thanks,
Stephen G4YLA
stephen...@virgin.net
Many thanks indeed for your help - just the job !!
Hope you are surviving all this hot weather,
Kind regards,
Stephen
On Sun, 25 Jul 1999 14:48:14 GMT, ian.ross#@net.ntl.com (Ian) wrote:
>On Sun, 25 Jul 1999 08:05:40 GMT, stephen...@virgin.net wrote:
>
>Hi Stephen,
>
>Here is a Text file I had found on the Net which relates to the Icom
>handhelds. I have the IC-W21ET which I was able to expand using the
>file by Pressing and holding [B] + [#] while switching the rig on.
>Then going into Set Mode and changing Mode [PL] to 100 from 1. Hope
>that helps.
>
>Cheers Ian GI0...@QSL.NET
>
>============================================================
>
>Subject: Icom W2A Mods
>>cr...@mips.com (Richard Crisp) writes:
>>
>>>I have gotten a very large and much appreciated response for the mods I
>>>requested. Many thanks to all that responded.
>>
>> I have recently got an IC-W2E, and I'd also appreciate
>> those mods, or even hints, where to look them for..
>>
>> Thanks
>
>Here is a collection of the mods. Enjoy folks, and thanks for the
>help!
>
>
>
>
>For crossband repeat, just set up each band with the mode which
>you want to use, and then hit <function>2 <function>ENTER - To cancel
>hit <function>2 <function>ENTER again.
>
>-fred
>--
>| Fred Lloyd AA7BQ Fred....@West.sun.com |
>| Sun Microsystems, Inc. ...sun!flloyd |
>| Phoenix, AZ (reality -- what a concept!) (602) 275-4242 |
>
>________________
>
>
>This is less of a mod than it is a function. To expand the receiver
>frequency range of the new Icom IC-W2A to 118.00-170.00,
>322.00-513.00,
>and 800.000-970.000, do the following:
>
>o Hold down the Light, B, and # keys while turning the power on.
>
>That's actually a four button sequence, since power on is controlled
>by a keypad button.
>
>--
>73, Paul
> _____________________________________________________________________
>
> From the shack of Paul MacDonald! Packet Radio: WA1...@KB4N.NH.USA
>
> / / /\ / /~~/ /\/\ /\/\ /\ / /\ (~ / / / / /\ /\ / / /
>
> \/\/ /~~\ / /__/ / / / / ~ / V /~~\ ) /~/ /_/ /~~\, / V /~/
>
> Internet: ...ubbs-nh!wa1omm!paul CIS: 70411,626 PLink: UPPERCRUST
>
>
>
>________________
>
>
>
>Modification Instructions for the IC-W2A Handheld
>
>Two mods, one for Cross Band Repeat and one for extended TX range
>
>
>
>Cross Band Repeat Function
>
>To access the cross-band repeat function, first perform the extended
>receive mod by holding down the Light/B/# keys while turning on the
>power.
>
>To enable cross-band repeat, set each band to the frequency and mode
>desired. Set the current band to VHF.
>
>Press (Function-2) (Function-Enter) and the little "L" indicator will
>flash. The radio is now in the cross-band repeat mode. Do disable,
>press (Function-Enter) again.
>
>
>
>Extended Transmit Mod
>
>
>Call the ICOM parts department ((206) 454-8155) and order a pair of
>MA133 diodes (P/N 1790000850). These are the three terminal surface
>mount diode packages. It is probably not advisable to substitute
>conventional leaded glass diodes here due to size restraints.
>
>The modification involves removing one surface mount component and
>installing two others. The working parts are extremely small and the
>mod should not be performed unless you are comfortable with working
>while using a loop eyepiece or other magnifying device. This is a
>"surgical" operation. Take all the usual precautions with respect to
>static electricity, etc.
>
>Remove 5 screws holding back on, and two screws on side of case below
>the PTT switch. Gently pry the unit apart.
>
>Inside the unit are two RF "stack" units. The complete RF "stack" is
>composed of two enclosed sheet metal boxes sandwiched together, about
>1.5" wide, 2" tall and .5" thick. Each RF stack unit (one per band)
>is
>totally self contained, is about .25" thick, and plugs into the
>"motherboard" using connectors mounted on one end.
>
>First, remove the stack units. To do this, remove one screw from each
>side of the stack. Remove the single screw off the bottom end of the
>stack and gently remove the metal spring clip holding the stack
>together.
>
>Carefully lift each stack unit out by pulling it back and down. They
>should easily unplug from the upper motherboard. Set them aside for
>now.
>
>At this time the back side of the front panel is clearly accessible
>and
>the two CPU's are visible side-by-side across the top. Now refer to
>the following illustration:
>
>
> Top of Radio, Back side of Front Panel
>_____________________________________________________
> |
> -------- -------- |
> | | | | |---
> | CPU-1 | | CPU-2 | | |
> | | | | | P |
> -------- -------- | T |
> | T |
> -------- | |
> -------- |---
> .<: <-D1 ---------- |
> .. | |fuse | | |
> D2-> V ---------- |
> .. |
> D3-> V |
> .. |
> V <-D? |
> |
>
>
>D1, D2 and D3 are locations on the board. Only D2 is installed
>at the factory. To perform the mod, you must do the following:
>
> Remove D2
> Install D1
> Install D3
>
>The locations of D1 and D3 are clearly silk screened onto the circuit
>board and are easy to locate. Don't attempt to re-use D2. The
>periods
>(..) show the approximate location of the solder pads for the 2-legged
>sides of the diodes.
>
>Diode D2 may be removed by carefully heating the leads and prying it
>up
>using a sharp tool. Be very careful since it's easy to lift the
>solder
>pads.
>
>One method of installing diodes D1 and D3 is to use a very small drop
>of super glue to mount the part, and then use a soldering iron to tack
>down the pins.
>
>After the parts are installed, reassemble the radio. Although the
>manufacturer recommends that the microprocessor be reset after this
>mod, I have found it to be unnecessary. All memories retained their
>settings after the mod. Tests using a dummy load and a frequency
>counter showed TX ability on UHF from under 400MHz to over 490MHz.
>TX on VHF covers from 136MHz to 174MHz.
>
>-fred AA7BQ
>
>--
>| Fred Lloyd AA7BQ Fred....@West.sun.com |
>| Sun Microsystems, Inc. ...sun!flloyd |
>| Phoenix, AZ (reality -- what a concept!) (602) 275-4242 |
>
>________________
>
>
>Now for the added part - multi-digit entry for mhz
>
>After doing the above, REQUIRED!!
>
>select the VHF band as MAIN
>push F (above the PTT button) and SET (the 8 button)
>then using the ^/SCAN button make the lower right symbol of the band
>say PL
>rotate the right knob to set the display to 1,10, or 100 as desired
> 1 sets entry to single digits only
> 10 sets entry to 10's and single digits
> 100 sets entry to all digits
>
>hit PTT
>
>Now - repeat the above for the UHF band - Note It WILL NOT work unless
>you do it for BOTH bands.
>
> You now have a walkie that requires all the digits (assuming
>you chose 100) to program it's frequencies.
>
> /s/ Bob Gettys N1BRM
>
>
>________________
>
>
>Rupert,
>
>Here is more info on the the performance of the W2A after the mod.
>
>John. N0LHW
>
>
>
>
> Well folks I have had my IC-W2A for one week now & am,needless
>to say
>suitably impressed. But now my comments...
> Why did Icom have to change the DC input socket to what the
>W2A has.
>It is very unusual & as far as I can find out, Icom are the only
>people who
>can supply a plug for it. I think they should have stayed with the
>more common
>2.1mm DC jack as per the IC-32AT.
> I did some checks of the receivers using an IFR 500A signal
>generator
>& the following is what signal level I needed to get 1 "S" point on
>the W2A's
>S meters.
> At 70mhz, 1mV (milli-volts)
> 80mhz 0.5mV
> 90mhz 0.25mV
> 100mhz 75uV (micro-volts)
> 110mhz 1.5uV
> From here to 170mhz less than 0.2uV
> 173mhz 1.5uV
> 174mhz 75uV
> 200mhz 75uV
> 250mhz 0.5mV (whats going on here???)
> 275mhz 4uV
> 300mhz 1.5uV
> 320mhz 5uV (changed to UHF main VFO from here on)
> 400 - 450mhz less than 0.35uV
> 460mhz 0.75uV
> 465 - 510mhz less than 1uV
> 520 - 690mhz less than 2uV
> 700 - 999mhz varies from 7.5uV to 2uV, dips to 0.35uV at
>900mhz.
>
> Quite impressive, but I would really like to get better
>sensitivity
>at the 70 - 80mhz end. Studying the circuit diagram shows
>bandpass/bandstop
>filters all over the show, so maybe its possible to modify a few to
>increase
>sensitivity here.
> I am gathering together the ciruits of the Icom IC-R1, IC-24AT
>&
>W2A to compare the front ends so we will see what comes of this
>experiment
>in the near future.
> One other worry was the on/off switch, how do you turn the set
>off
>when the battery is flat. I am concerned about running the battery to
>zero
>volts, hopefully this does not occur. I have been disconnecting the
>battery
>when charging to prevent anything funny happening.
> The antenna supplied with my W2A is an FA-1443BB, whats the
>difference
>between this & the FA-1443B, & the FA-4B supplied with an IC-R1.
> One more gripe, I dont like the plastic plug/covers over the
>DC jack,
>headphone, external speaker sockets, they should have been rubber as
>per the
>IC-32AT, as I can see already that they will not last very long after
>prolonged
>use. Boy what a moaner, you say, small complaints but this would
>really have
>made it the best. I wonder what Yaesu & Kenwood are going to do to
>compete
>with this???
>
>Cheers
>
> C. Tetenburg (ZL1BQJ) Internet:
>cha...@mof.govt.nz
> Network Controller
> Ministry of Forestry Computer Centre
> Forest Research Institute
> Sala St.
> Rotorua
> New Zealand
>
>
>>From daemon Mon Jul 15 23:39:24 1991
>Received: by violet.berkeley.edu (5.61/1.32)
> id AA03693; Mon, 15 Jul 91 14:39:02 PDT
>Date: Mon, 15 Jul 91 14:39:02 PDT
>From: adm...@violet.berkeley.edu (Graduate Division-Admissions)
>Message-Id: <910715213...@violet.berkeley.edu>
>To: info-...@infoac.rmi.de
>#Subject: Re: Request: rig; Topic: icom_ic_w2
>Status: OR
>
>Thanks For The IC W2A Mods.
>The extended receive that HRO Oakland gave me differs slightly
>from the posted version...my display (sensitivity is another
>matter) indicated RX from DC to somewhere just below IR after:
>turn off
>simultaneously press-funct-3-B-# keys
>turn on
>
>
>(end of mod)
>It has been pointed out that only the funct is different from
>previously posted version, but I wonder. I get the feeling that
>there are many more hidden tricks to this rig that only ICOM
>knows about. I'd really be curious about any kind of data transfer/
>cloning capabilities it may have, etc.
>-73 de Michael Dahl
>KC6UFR
>e-mail: adm...@violet.berkeley.edu
>
>
>A couple of weeks ago I posted an inquiry about bad transmit audio in
>a
>IC-W2 handheld. I would like to thank everybody who sent in their
>response.
>
>Some said their radios work well, one said his doesn't and one told
>Icom
>America had repaired similar symptoms in his friend's radio. A later
>comparison with a healthy unit confirmed that the fault wasn't between
>the operator's ears...:-)
>
>However, Jukka, OH2BUA, a good friend of mine happened to work me with
>his
>brand new IC-2SRE. He had audio characteristics astonishingly similar
>to
>my radio. As a result to my complaints he opened his radio and cured
>the
>problem. Last Monday I did the same job and here it comes:
>
>
>---------------------------- W A R N I N G
>-------------------------------
>
>Servicing your radio by yourself may void the warranty. The author
>takes
>no responsibility whatsoever of the possible hassles with warranty
>codes
>intended for technically non-experienced radio users.
>
>If you are not a qualified radio service technician on if you are not
>accustomed to work with extremely miniature surface-mount components,
>return your radio to the dealer with the following instructions.
>
>---------------------------- W A R N I N G
>--------------------------------
>
>Radio: IC-W2A/E, IC-2SRA/E, IC-4SRA/E
>
>Trouble: Weak transmit audio, deviation below the specifications, high
>end
>of the speech spectrum missing.
>
>Tools needed: A good soldering iron with a sharp tip, desoldering
>braid,
>solder, sharp-nosed pliers, small cross-point screwdrivers.
>
>Cure:
>
>1. Open the radio case following the instructions in the owner's
>manual
>(p. 45).
>
>2. In radios fitted with the UT-63 board, pull out the board.
>
>3. Unscrew the two small screws holding the tin plate against the
>bottom
>ends of the band modules. Pull out the plate.
>
>4. Pull out the band modules.
>
>5. Now you see the microfone fitted to the mother board. It should fit
>neatly against the inside of the fascia panel. If it doesn't, carry
>on.
>
>6. Unsolder the microphone leads from the mother board. BE CAREFUL not
>to overheat the board and the wire insulation.
>
>7. Pull out the microphone and the rubber gasket.
>
>8. Re-install the gasket. Pull in the microphone so that it fits
>inside
>the gasket well and press it firmly to the end.
>
>9. Re-solder the mic wires.
>
>10. Install the band modules, the tin plate and don't forget the
>screws.
>
>11. Replace the rear panel.
>
>12. Tighten the 7 screws.
>
>13. Test the audio response.
>
>
>(c) OH2BUA and OH3BK, 1991. Unlimited reproduction allowed.
>
>
>--
> Richard Crisp cr...@mips.com
> MIPS Computer Systems !decwrl!mips!crisp
> 928 Arques MS 5-07 (408) 524-7250
> Sunnyvale, Ca 94086
>
>
>Copied from the QRZ! Windows Ham Radio CDROM
>To return Email delete # from the Email address
>ian.ross#@net.ntl.com