[ICOM] 718 Receiver

[David J. Ring, Jr.]

Put in a morse code key - or if you don't have one, put in a shorted phone 
plug and see if the problem is because it is on RTTY or if the problem is on 
CW and RTTY.

Also you can whistle on SSB and see if the power goes up over 50 watts - it 
should hit 80 watts on SSB.

73

David N1EA
----- Original Message ----- 
From: <awallacejr at sbcglobal.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Sunday, December 05, 2004 12:49 PM
Subject: Re: [ICOM] 718 Receiver


> Thanks Gary. It is a new Icom power supply with a dedicated connection to 
> the radio and he is also using an Icom 180 auto tuner properly hooked up. 
> We also did two hard resets of the radio CPU to no avail. Also checked the 
> antenna SWR with a MFJ meter--it is under 1.5 with no tuner. Will try the 
> dummy load approach for impedence problems but it is interesting that the 
> radio puts out exactly 1/2 its rated power; not close to 1/2 but exactly 
> 1/2 or 50 watts key down on RTTY.
>
> You may know Sandy-N5NBW--who owns the radio.
>
> BTW, the little radio is a lot of fun to operate and seems to be a lot of 
> bang for the buck--especially if we can get 100 watts out ;-)
>
> Andy K5VM
>
>
> ----- Original Message ----- 
> From: "Gary Fiber" <g.fiber at verizon.net>
> To: "ICOM Reflector" <icom at mailman.qth.net>
> Sent: Sunday, December 05, 2004 11:16 AM
> Subject: Re: [ICOM] 718 Receiver
>
>
>> What are you using for a power supply?
>>
>> I had this happen on an FM transceiver once and found the binding posts 
>> even though real finger tight were loose.  The transceiver was current 
>> starved. Tightening up with a wrench solved the trouble.
>>
>> Have you got a dummy load to use in place of the antenna. A low SWR does 
>> not always equate to the correct impedance.
>>
>> Its unlikely it would come from the factory so low on output power. 
>> Possible a bad final could be the problem though they are pretty good.
>>
>> Gary K8IZ
>>
>>>Hi All-
>>>
>>>Have a friend with a new 718 that I helped him set up. No matter what 
>>>transmit power setting we use ( including transmit= H ), we can't get the 
>>>radio to put out more than 50 watts. Have very low antenna SWR and 
>>>received S-9 SSB reports from Calif ( we live in Texas ). Key down in 
>>>RTTY shows exactly 50 wattts on radio's power meter.
>>>
>>>Any thoughts? Could it have a bad power transistor?
>>>
>>>Thanks, Andy K5VM
>>
>> Gary Fiber K8IZ
>> GROL PG-19-6691
>> Washington State Resident
>>
>>
>> ----
>> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
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>>
>
>
> ----
> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> Win a new Icom IC-756PROIII and help QSL/QTH.net
> Details at: http://mailman.qth.net/
>
>
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