[ICOM] IC-756 - CW problem - and on Christmas yet!

[Jan C. Robbins]

Dummy loads are antennas, Gary; they ALWAYS radiate, even when they're 
grounded (which they're usually not).  To prove the point, set yourself 
up on 14.195 when rare DX is operating there.  Attach a dummy load to 
your rig.  Set power out to 50w.  Call the DX station and see how long 
it takes until you're told to "listen up" or called a lid.

It is perfectly possible to work DX on a dummy load, just as it is when 
there is a dummy like me on the OTHER end of the coax.

Happy New Year!  May it bring all on the list health, happiness, and the 
last one for Honor Roll.

73 Jan


Gary Fiber wrote:

> OK Jan I got your point but have to say most every call I took in the 
> eleven years at Icom a dummy load usually negates the RFI problem.
> Yes we used to get run off Channel 16 on the marine bands as the IFR 
> loads radiate very well. Anyway his trouble is solved.
> 
> Gary K8IZ
> 
> At 09:40 AM 12/26/2004, you wrote:
> 
>> Good for you Carl!
>>
>> The problems--and your solutions--are common ones for those of us who 
>> run mobile--dropping voltage, Icom DC cables, RF on the coax (yes, 
>> Virginia, dummy loads do radiate), etc.  Glad it was that 
>> straightforward!  Happy New Year; look for you on CW.
>>
>> 73 Jan N0JR
>>
>> Carl Vangsness wrote:
>>
>>> Thanks to everyone for all the good suggestions. As with everything 
>>> electronic, there was more than one issue.
>>> 1. MFJ Mighty Lite power supply sags from 13.8 vdc no load down to 
>>> less than 11.4 vdc during normal CW keying, down to 10.6 vdc during 
>>> keydown of more than 5 seconds. I will begin immediate search for 
>>> better power supply.
>>> 2. DC cable from PS to 756 running parallel to and inches away from 
>>> antenna cable exiting LDG tuner. After doing power supply voltage 
>>> measurements, problem went away. Then came back after repositioning 
>>> tuner and Rigblaster.
>>> Brilliant ham radio solution: aluminum foil wrapped around power cord 
>>> (Icom's unshielded basic two large wires) to get it  past the length 
>>> near the antenna cable. Result: nice 20 minute CW full power QSO with 
>>> KCØSHU near Denver. (I'm near Minneapolis.)
>>> I do have some other lack-of-ground issues with shack in basement 
>>> near any true earth to plant a ground rod in, but that continues to 
>>> be a work in progress.
>>> Again thanks to everyone on the forum for their help and 
>>> encouragement and a good New Year to all.
>>> 73 de Carl WCØV
>>>
>>>>
>>> ----
>>> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
>>> Win a new Icom IC-756 PRO III and help QSL/QTH.net
>>> Details at: http://mailman.qth.net/
>>
>>
>> -- 
>> "There is no end to what you can accomplish
>> if you don't care who gets the credit."   Anon.
>>
>> ----
>> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
>> Win a new Icom IC-756 PRO III and help QSL/QTH.net
>> Details at: http://mailman.qth.net/
> 
> 
> 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-756 PRO III and help QSL/QTH.net
> Details at: http://mailman.qth.net/
> 
> 

-- 
"There is no end to what you can accomplish
if you don't care who gets the credit."   Anon.