[ICOM] 718 Receiver

[awallacejr at sbcglobal.net]

Thanks George. That may be the answer since I was using RTTY to transmit a 
carrier. I will check with Icom. And again, that 718 is one neat little 
radio--not a toy at all.

Andy K5VM


----- Original Message ----- 
From: "George Lee" <geokr5c at cablelynx.com>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Sunday, December 05, 2004 11:03 PM
Subject: Re: [ICOM] 718 Receiver


> Andy, I am not all that familiar with the 718 but was wondering if there 
> is a way the transmit is locked in the AM or RTTY mode?
>
> Probably not so but, it sure sounds as if it is somehow locked on the 1/2 
> power level often found on 100 watt radios when in the AM, FM, RTTY mode.
>
> Good luck guys.
>
> 73, George
>
> ----- Original Message ----- 
> From: <awallacejr at sbcglobal.net>
> To: "ICOM Reflector" <icom at mailman.qth.net>
> Sent: Sunday, December 05, 2004 11:49 AM
> 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
>>> Win a new Icom IC-756PROIII and help QSL/QTH.net
>>> Details at: http://mailman.qth.net/
>>>
>>
>>
>> ----
>> 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/
>>
>
>
> ----
> 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/
>