[ICOM] Questions for Icom PW1 Users

[we1x at comcast.net]

Bruce,

I have the later version of the PW1 (version that does not require the unit to be on to use the exciter barefoot, but does allow for band tracking and antenna selection).  Currently used the PW1 with a 775dsp.

With the PW1 "off" its antenna tuner does not engage and the PW1 tuner's LED does not go on if you push the tuner button.

With the PW1 "on" and the amp not engaged, the tuner LED will light but not tune.  As someone mentioned the PW1's tuner may appear to be tuning as it probably has a preset on that portion of the band and specific antenna from previous use.

Regading the jumper setting on the PW1 for power. I did this once when using a non-Icom exciter.  Did not see any real advantage in doing so.  In the end I just took the 13.8 volts (I think) from the ACC DIN socket on the back of the amp.  Worked just fine.

Hope this helps.

Harry WE1X

-------------- Original message -------------- 

> 
> Hello and thanks for reading this message. 
> 
> I'm confused, after reading the manual and speaking to Icom's normally 
> excellent tech support, I have a few questions on this fine amp. 
> 
> First, I am using the PW1 with my Icom 765, seems like a nice match. 
> 
> 
> 1) In the manual Icom states that the PW1 antenna tuner will function with 
> the PW1 main power off, I assume that you mean the exciter is on but the 
> main power to the PW1 is switched off, right? 
> If so, then my antenna tuner will not function when I press the button for 
> more than 2 seconds - as noted in the manual. 
> With the 765 on, the LEDs for the antenna input and exciter input work fine, 
> and I can switch between the inputs, but pressing the Tuner button has no 
> effect with the Main power switch off on the PW1. 
> If I turn off the 765, the PW1 LEDs mentioned above turn off and the input 
> switching function no longer works. 
> 
> Has anyone tried using the internal power supply by setting the PW1 dip 
> switch? 
> The PW1 manual outlines the procedure, wondering if that is just for 
> non-Icom exciters. 
> 
> 2) Also noted that the tuner function does not seem to work when I have the 
> PW1 power on but the amp off. 
> If I have the PW1 main power switch on and then press the tuner button, the 
> tuner light flashes like it is trying to tune, but then goes out. 
> Kevin, the tech support rep at Icom told me that the PW1 "generates its own 
> RF for tuning" and the PW1 does not even have to be connected to a radio for 
> the tuner to work. - This sounds odd to me. 
> If I try the same thing with 765's the transmit switch on in RTTY or CW, the 
> unit will tune and the tuner light will stay on. 
> Is this correct? 
> 
> Sorry to ask what may seem such simple questions, but I am not certain who 
> to believe on this one. 
> 
> Tnx! 
> 
> 73 Bruce W1UJR 
> 
> 
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