[ICOM] ICOM AT180 dropping out - ideas anyone?

[KK2DOG in NY]

The 40 meter Hamstick only has a 60 KHz bandwidth, so maybe it's simply out of the tuning capabilities of your AT-180. Have you tried adjusting the length of the antenna? Here's the Hamstick specs:  http://www.hamstick.com/9106.htm

 

 

                        Mike KK2DOG

                    www.hamwave.com 

 

 

 

 

 


 
> From: JimMiller at STL-OnLine.Net
> To: icom at mailman.qth.net
> Date: Sat, 21 Feb 2009 23:31:16 -0600
> Subject: Re: [ICOM] ICOM AT180 dropping out - ideas anyone?
> 
> Tapping the tune button will set the tuner to on and leave it there until I
> start to transmit, then is when it starts to flash and then drops out.
> During the flashing while I am transmitting all is good including the swr
> indication on the radio.
> 
> If I press and hold, it goes through its tune cycle and drops out as if
> there isn't any good place to stop.
> 
> Thanks es 73, de Jim KG0KP
> 
> ----- Original Message ----- 
> From: "KK2DOG in NY" <kk2dog at hotmail.com>
> To: "Icom Reflector" <icom at mailman.qth.net>
> Sent: Saturday, February 21, 2009 11:16 PM
> Subject: Re: [ICOM] ICOM AT180 dropping out - ideas anyone?
> 
> 
> 
> Are you pressing the "Tune" button on the radio momentarily, or are you
> holding it in for a second or two to start the tuning cycle? I hold mine in
> until I hear the "beeeep' sound and then I release it.
> 
> 
> 
> Mike
> 
> 
> 
> 
> 
> 
> 
> > From: JimMiller at STL-OnLine.Net
> > To: icom at mailman.qth.net
> > Date: Sat, 21 Feb 2009 19:29:59 -0600
> > Subject: [ICOM] ICOM AT180 dropping out - ideas anyone?
> >
> > (BTW - I don't have the SERVICE manual for the radio itself.)
> >
> > The tuner may be OK now.but I will need to get some more time on it to
> see.
> > Sometimes it was OK and then later it is not.
> >
> > What happens is that I use it to widen the band a bit in my mobile with
> the
> > 40 meter Hamstick. Turn the tuner on (706 button), it stays, transmit,
> > (sometimes, most of the time) it starts flashing the tune light on the
> > 706Mk2G and the swr shows about 1.2 or so and then after a few seconds it
> > drops out and the swr is very high. If it would just STOP flashing and
> stay
> > engaged, all would be fine but it drops out. Press it on again and it goes
> > back to flashing. They say that when it drops out that I "go away". I
> > watch it and turn it right back on and they tell me I am back but they
> > missed a few words or a sentence and "where did I go". (Holding the tune
> > button to force tune doesn't find a good match and it disengages, it also
> > doesn't change the symptoms.)
> >
> > The internal switches were set to default and I changed the AB switch from
> > the A position to the B position (AB switch position B is called "Through
> > Inhibit" and is described as:
> >
> > [the tuner tunes the antenna even when the antenna has poor SWR (up to
> VSWR
> > 3:1 after tuning). In this case manual tuning is necessary each time you
> > change frequency although the tuner automatically starts tuning when the
> > VSWR is higher than 3:1. This setting is called "Through Inhibit", however
> > the tuner is set to "through" if the VSWR is higher than 3:1 after
> tuning.]
> >
> > The CD switch was and still is in the D (default) position (CD switch not
> > used for SSB operation).
> >
> > It seems to be MUCH better but I won't know until I get more time with it.
> > Would anybody think there is a problem with the "bypass" RF path through
> the
> > tuner? Sounds to me like the next step if this thing still has problems.
> > The antenna does work just fine within a much narrower range without the
> > tuner in line.
> >
> > Thanks es 73, de Jim KG0KP
> >
> > ----
> > 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: http://www.qsl.net/donate.html
> 
> _________________________________________________________________
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> ----
> 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: 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: http://www.qsl.net/donate.html

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