[ICOM] IC-7000 AM Modulation Problem

[Larry Harrison]

Thanks Gary,

No, I did not know the IC-7000 was only capable of only 40 Watts in the Am 
mode.  However, I did check the modulation at various power levels. I think 
I did check modulation  with carrier levels set as low as 10 Watts. The low 
modulation problem never improved.

73,Larry/K3JRR


----- Original Message ----- 
From: "Gary" <n6lrv at cox.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Tuesday, April 04, 2006 05:24
Subject: Re: [ICOM] IC-7000 AM Modulation Problem


> Larry I was with ya all the way till the end of your email when you 
> mentioned
> you set the carrier output power to 25 watts, etc. etc.
> You realize (I hope) that the IC-7000 is only capable of 40 watts max 
> output
> power in AM mode on HF & 6m right? It's even less for 2m and 70cm (20w and 
> 14w
> respectively).
> Gary
>
> Larry Harrison wrote:
>
>> Hi All,
>>
>> I recently purchased an IC-7000.  A fine radio in all respects except my
>> radio will only modulate 30% or less with VOICE.
>> It will modulate 100% with a 1000 Hz tone.
>>
>> Is there anyone else who owns an IC-7000 with this problem.
>>
>> If you have never checked your IC-7000 on AM, would you please do so to 
>> find
>> out what your 7000 does on AM.
>>
>> I have found several postings on eHam.net by others who have reported 
>> this
>> problem.
>> I have contacted ICOM Re this matter, and have received an unfavorable
>> response from them.
>>
>> Please email via the Reflector or directly to me, harrisonl at comcast.net 
>> if
>> any of
>> you are experiencing this problem.
>>
>> I operate AM as well as SSB, and CW. I sure would appreciate any help
>> from any of you as my IC-7000 transmitter is totally useless on AM.  Sure
>> hate to
>> have spent $1499 for a radio that has a problem, that so far has not been
>> resolved.
>>
>> By the way, the AM modulation percentage problem has been confirmed with 
>> the
>> built in wattmeter, an
>> oscilloscope, IFR-1200S communications service monitor and a Bird 43 Peak
>> Reading Wattmeter. All testing was performed with the carrier set at 25
>> Watts (1/4th of 100 Watts for proper head room).
>>
>> 73
>> Larry K3JRR
>>
>> ----
>> 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/
>