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Re: [VHFcontesting] IC910H Power Output Question

To: vhfcontesting <vhfcontesting@contesting.com>
Subject: Re: [VHFcontesting] IC910H Power Output Question
From: "MERLE COX " <w7yoz@centurylink.net>
Date: Thu, 12 May 2016 15:17:20 -0400 (EDT)
List-post: <vhfcontesting@contesting.com">mailto:vhfcontesting@contesting.com>

Thank you all for the very helpful comments. 

Thanks to your tips on proper voltage/power cords and careful measurements, I 
now have the following Po wer outputs: 

144.2 MHz - 92 Watts into Bird 250C element and 88 Watts measured on the Drake 
WV-4 

432 & 440 MHz - 75 Watts into Bird 100D element. 

1,296 MHz  - 7.5 - 10.0 Watts from 7 different measurement methods - Bird 25 W 
1.1-1/8 GHz & 10 W 400-1,000 MHz elements, Daiwa C495m  & Comet CM1200 1.2 GHz 
watt meter s, Narda 10 & 20 dB Directional  Couplers, Narda 20 dB, 20 watt 
attenuator - all 3 into 20 dB HP attenuator and Microwave power meter.  The 
average was 8.9 - probably "good enough" as KK7B says. 

73's 

Merle W7YOZ 


----- Original Message -----

From: "MERLE COX" <w7yoz@centurylink.net> 
To: "vhfcontesting" <vhfcontesting@contesting.com> 
Sent: Wednesday, May 11, 2016 10:14:47 AM 
Subject: IC910H Power Output Question 



The IC910H is specified to deliver 100 Watts on 144 MHz and 75 Watts on 432 
MHz,  but my IC910H and several others I am aware of do not come within 
25 Watts of  this on either band.  So I would like to know what others on the 
list have experienced with this rig?   Mine has been to ICOM twice and both 
times was sent back saying it puts out the rated power.  I have checked/changed 
power cords, power supplies (ASTRON 35 Amp.), watt meters ( two different Bird 
43 with several 100-250 MHz C elements, Drake WV4), short RG8 connecting cables 
to Bird and quality loads but still only about 70 Watts on a good day.    
  
Thanks for the input, 
  
Merle W7YOZ   

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