[ICOM] WTB: IC-22U or IC-22S

Mon May 18 20:03:09 EDT 2009

That's what I was thinking as well.  Still hoping for the 'prug and pray'
solution, but that's definitely an option.  

Haven't looked at the schematic yet... is it (hopefully) just a matter of
applying a ground?

Mike
WM4B

> -----Original Message-----
> From: icom-bounces at mailman.qth.net [mailto:icom-
> bounces at mailman.qth.net] On Behalf Of Jim Hargrave
> Sent: Monday, May 18, 2009 6:17 PM
> To: ICOM Reflector
> Subject: Re: [ICOM] WTB: IC-22U or IC-22S
> 
> Mike,
> 
> That is not a big problem, since you are planning on using them for a
> fixed
> frequency application.
> 
> You can program one channel for the receive frequency and another for
> the
> transmit frequency and switch channels from Rec/Transmit. That will
> give you
> the 600hz offset.
> 
>    * 73's Jim W5IFP *
> 
> 
> 
> 
>    >-----Original Message-----
>    >From: icom-bounces at mailman.qth.net
>    >[mailto:icom-bounces at mailman.qth.net]On Behalf Of Mike Besemer
> (WM4B)
>    >Sent: Monday, May 18, 2009 10:01 PM
>    >To: 'ICOM Reflector'
>    >Subject: Re: [ICOM] WTB: IC-22U or IC-22S
>    >
>    >
>    >Jim,
>    >
>    >I did see the mods for the lower frequencies, but unfortunately I
> need a
>    >duplex application since it'll be used as a remote base.
>    >
>    >I've thought of several ways to get around the 400 KHz problem,
>    >but all are
>    >more work then I want to do if I can avoid it!  I'm hoping to
>    >find a 'U' or
>    >even a cheap 'A' that I can crystal for our application.  If not,
> I'll
>    >probably find and 'S' and do some mods to make it do what we need.
>    >
>    >Thanks for the help.
>    >
>    >73,
>    >
>    >Mike
>    >WM4B
>    >
>    >> -----Original Message-----
>    >> From: icom-bounces at mailman.qth.net [mailto:icom-
>    >> bounces at mailman.qth.net] On Behalf Of Jim Hargrave
>    >> Sent: Monday, May 18, 2009 5:46 PM
>    >> To: ICOM Reflector
>    >> Subject: Re: [ICOM] WTB: IC-22U or IC-22S
>    >>
>    >> Mike,
>    >>
>    >> You can modify the IC-22s for the lower 2m frequencies. I
>    >have modified
>    >> several and at one time had 4 of them on my Packet
>    >BBS/Cluster. It is a
>    >> very
>    >> reliable rig after you fix the synthesizer. All the Icom
>    >radios of that
>    >> vintage used steel feed-thru pins in the synthesizer boards.
> After a
>    >> time
>    >> the solder connection would go cold due to dissimilar metals. The
> 22s
>    >> has 13
>    >> such animals. I removed them and replaced them with a short piece
> of
>    >> copper
>    >> wire. That fixed them.
>    >>
>    >> To put a 22S on the lower frequencies you replace the synthesizer
>    >> Reference
>    >> crystal and add a divide by 2 IC. I used 1/2 of a CD4013. That
> will
>    >> make it
>    >> tune to the lower part of the band in 5 khz increments. 10.24 mhz
> CB
>    >> crystals work fine. The drawback to this mod, is the radio is
>    >only good
>    >> for
>    >> simplex as the shift becomes 400 khz instead of 600. Most of our
>    >> application
>    >> was as packet digis, so it was not a problem. Some were also used
> as
>    >> repeater receivers.
>    >>
>    >> If you can find the 22U, its better, but a lot more 22s's were
> made
>    >> than
>    >> 22u's. Sorry, but I gave away 3 of the modified 22s a couple of
> years
>    >> ago.
>    >> Except for the DX Cluster, packet is a fading mode in this area.
>    >>
>    >>    * 73's Jim W5IFP *
>    >>
>    >>
>    >>    >-----Original Message-----
>    >>    >From: icom-bounces at mailman.qth.net
>    >>    >[mailto:icom-bounces at mailman.qth.net]On Behalf Of
>    >mwbesemer at cox.net
>    >>    >Sent: Monday, May 18, 2009 7:09 PM
>    >>    >To: ICOM Reflector
>    >>    >Subject: Re: [ICOM] WTB: IC-22U or IC-22S
>    >>    >
>    >>    >
>    >>    >All,
>    >>    >
>    >>    >I just realized that the IC-22S does not cover below 146 MHz
> and I
>    >> need
>    >>    >it down on 145.11.  Because of this, I can only use an IC-
> 22U.
>    >>    >
>    >>    >Sorry about that es 73,
>    >>    >
>    >>    >Mike
>    >>    >WM4B
>    >>    >
>    >>    >
>    >>    >On Mon, May 18, 2009 at 3:07 PM , mwbesemer at cox.net wrote:
>    >>    >
>    >>    >> I'm looking for an Icom IC-22U or IC-22S for use at a
>    >>    >repeater site as
>    >>    >> a remote base. Physical condition is not particularly
> important.
>    >> I
>    >>    >> would prefer a working unit, but may consider one in
> repairable
>    >>    >> condition, depending on the fault.
>    >>    >>
>    >>    >> 73,
>    >>    >>
>    >>    >> Mike
>    >>    >> WM4B
>    >>    >> ----
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> owner at mailman.qth.net
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>    >> Icom Users Net: Sundays, 1700Z, 14.316 MHz
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>    >
>    >----
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> 
> ----
> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
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