Amen, Pat!

Tom Behler: KB8TYJ

----- Original Message ----- 
From: "Pat Byrne" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, December 13, 2012 9:08 AM
Subject: Re: Accuracy of TW1 Talking SWR/Watt Meter


> Tom,
> There are so many variables; John's point about jumpers, perhaps a 
> bit of wild RF floating around plus the five percent variability of 
> the meter, and probably a lot more inconsistiencies.  I think that 
> the TW1 is a fine device for tracking SWR, and the rest is a 
> bonus.  And at the end of the day it is still ham radio and fun.
> Pat, K9JAUAt 05:57 AM 12/13/2012, you wrote:
>>Hey, all.
>>
>>As I have addressed my most recent issue with the TS590 DC power cable, I
>>have noticed something interesting with my TW1 swr/watt meter.
>>
>>Actually, I thought I already knew this, but my most recent readings have
>>reminded me of the issue.
>>
>>Now, with both of my TS590 power cables, when the rig is set to 100 watts
>>output, I consistently get 100 watts as a power reading on the TS590's
>>internal meter.
>>
>>However, when using the LDG TW1 talking watt meter, my readings can vary
>>anywhere from 85 to 91 watts, with occasional dips as low as 81 watts.
>>
>>Keep in mind that all of these readings are taken on a resonant frequency
>>with my Alpha Delta DXCC antenna and an SWR of 1.0 to 1.  Also, I get the
>>same reading variations with the TW1 when using a dummy load.
>>
>>I checked the TW1 manual, and they clame an accuracy of plus or minus 5
>>percent on 14 mhz, but I think that is debatable.
>>
>>On the other hand, do we know how accurate the TS590's power meter is as
>>well?
>>
>>I'm not one to quibble over 10 or 15 watts, but I find the inconsistent
>>readings with the TW1 to be at least interesting.
>>
>>73 from Tom Behler: KB8TYJ
>