[ICOM] WTB: IC-22U or IC-22S
Gary Fiber
gfiber at comcast.net
Mon May 18 20:27:32 EDT 2009
Some over the years have also used an IC-2AT which had the thumb
wheel switches on it. Low power but you sure can stick an amplifier
behind it. The DC-1 is the 12 volt power supply for it. !2 volts in
some 9.6 volts DC out.
I once ran across an article describing how to build a DTMF to BCD
interface for DTMF control of the IC-2AT.
Gary K8IZ
At 05:03 PM 5/18/2009, you wrote:
>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
> > >> >> ----
> > >> >> Your Moderator: Dick Flanagan K7VC: icom-
> > owner at mailman.qth.net
> > >> >> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> > >> >> Icom FAQ: http://www.qsl.net/icom/
> > >> >> To support QSL/QTH.net: http://www.qsl.net/donate.html
> > >> >----
> > >> >Your Moderator: Dick Flanagan K7VC: icom-
> > owner at mailman.qth.net
> > >> >Icom Users Net: Sundays, 1700Z, 14.316 MHz
> > >> >Icom FAQ: http://www.qsl.net/icom/
> > >> >To support QSL/QTH.net: http://www.qsl.net/donate.html
> > >>
> > >> ----
> > >> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
> > >> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> > >> Icom FAQ: http://www.qsl.net/icom/
> > >> To support QSL/QTH.net: http://www.qsl.net/donate.html
> > >
> > >
> > >----
> > >Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
> > >Icom Users Net: Sundays, 1700Z, 14.316 MHz
> > >Icom FAQ: http://www.qsl.net/icom/
> > >To support QSL/QTH.net: http://www.qsl.net/donate.html
> >
> > ----
> > Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
> > Icom Users Net: Sundays, 1700Z, 14.316 MHz
> > Icom FAQ: http://www.qsl.net/icom/
> > To support QSL/QTH.net: http://www.qsl.net/donate.html
>
>
>----
>Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
>Icom Users Net: Sundays, 1700Z, 14.316 MHz
>Icom FAQ: http://www.qsl.net/icom/
>To support QSL/QTH.net: http://www.qsl.net/donate.html
Gary Fiber K8IZ
GROL PG-19-6691
Washington State Resident
More information about the Icom
mailing list