[ICOM] IC 775 DXII s-meter lamp flickering

[Maciej Wieczorek]

Vladimir,

TNX for the info. Well, I'll  have to try the combination between Drive and 
Mic gain. On the other hand, people don't coment that there are distortions 
on my audio, it's 100% clear, but they can hear every wisper that is in my 
house... I could talk to the mic from 10 meters distance ;-)

But OK, before I touch the L17 and L16 which seems to be comp level 
adjustment as the service manual says, I'll try other posibilities.

73's
SP2XF
----- Original Message ----- 
From: "Vladimir V. Sidorov" <ve3iae at rac.ca>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Wednesday, January 18, 2006 3:45 PM
Subject: Fw: [ICOM] IC 775 DXII s-meter lamp flickering


> Mac,
>
> Concerning compression, you have to play not only with the Mic gain, but
> also with Drive level. Check different combinations of them both and 
> you'll
> get a perfect signal, both compressed and with an excellent audio in the
> same time. The SM-20 matches the 775 perfectly.
>
> Honestly, I don't have any flickering neither at low, nor at high, altough
> as virtually all 775s do, my radio also delays the backlight at start up
> sometimes.
>
> 73,
>
> Vladimir VE3IAE
>
>
> ---
>>
>>
>>
>>
>>> Hello from Poland,
>>>
>>> I've just purchased IC 775 DXII with high s/n 1600 (japaneese market), 
>>> seems that manufactured in 2002. The radio looks like new and I was told 
>>> it doesn't show the problems which were common for early version of 775 
>>> DSP, unfortunately I noticed that the s-meter lamp flickers while 
>>> transmiting on CW, if the display brightness is adjusted to LOW.
>>>
>>> Is there any mod to ged rid of this? It's quite irritating...
>>>
>>> And BTW, did anyone ever tried to adjust the compresion gain level in 
>>> 775? I'm running SM20 desk mic and I find the compresion level too 
>>> strong, even with mic gain set to 10 o'clock. Below 10 o'clock the audio 
>>> starts to disapear, so that's not the solution. I missed the comp. level 
>>> pot. which were available on my old IC 736.
>>>
>>> TNX
>>> 73's
>>> Mac SP2XF
>>>
>>>
>>> ----- Original Message ----- 
>>> From: "John Geiger (NE0P)" <ne0p at lcisp.com>
>>> To: "ICOM Reflector" <icom at mailman.qth.net>
>>> Sent: Tuesday, January 17, 2006 8:51 PM
>>> Subject: RE: [ICOM] PRO2 vs. PRO3
>>>
>>>
>>>> My rig wasn't enclosed either.  I can't remember exactly where I 
>>>> touched on the radio to see that it was hot, but it did seem fairly hot 
>>>> to the touch.  It worked fine though, other than the SSB power on the 
>>>> meter showing only 70 watts or so on voice peaks.  My 756 always showed 
>>>> 100 watts on voice peaks.  I do not have a PEP reading wattmeter, so 
>>>> couldn't comment on using an outside meter.  It is interesting, though, 
>>>> to notice how the meter readings differed from the PRO2 to the 756 
>>>> original.  I have had 2 756 originals and they both always read 100 
>>>> watts on voice peaks.
>>>>
>>>> 73s JOhn NE0P
>>>>
>>>>
>>>> ---------- Original Message ----------------------------------
>>>> From: Adam Farson <farson at shaw.ca>
>>>> Reply-To: ICOM Reflector <icom at mailman.qth.net>
>>>> Date:  Tue, 17 Jan 2006 11:39:24 -0800
>>>>
>>>>>Hi John,
>>>>>
>>>>>My 756Pro2 (now sold) did not run particularly hot; neither does my 
>>>>>756Pro3.
>>>>>The temperature at the vent slots above the display, and on the rear 
>>>>>panel
>>>>>behind the PA, rises to about 32C (90F) in an 18C (65F) ambient after 2 
>>>>>to 3
>>>>>hours' operating. All my radio gear is free-standing, not enclosed.
>>>>>
>>>>>http://www.qsl.net/icom/ic756pro2/hot.html
>>>>>
>>>>>Both radios deliver 100W PEP into a 50-ohm load as measured on an
>>>>>oscilloscope calibrated against a Bird 43. I do not pay much attention 
>>>>>to
>>>>>the analogue meter on SSB. The digital bar-graph Po scale is somewhat 
>>>>>closer
>>>>>to peak-reading, but the oscilloscope is the most accurate.
>>>>>
>>>>>http://www.qsl.net/ab4oj/peptest.html
>>>>>
>>>>>Cheers for now, 73,
>>>>>Adam VA7OJ/AB4OJ
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>Scanned for viruses by Blue Coat
>>>>>http://www.WinProxy.com/
>>>>>----
>>>>>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/
>>>>>
>>>>
>>>>
>>>> ________________________________________________________________
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> ----
>>>> 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/
>>>>
>>>
>>> ----
>>> 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/
>>>
>>
>
> ----
> 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/
>