Rick, is the 20m antenna closer to the shack then the other antennas?
73, Mike K9MI
> ----- Original Message -----
> From: "Rick Williams" <rick.williams@telus.net>
> To: <tentec@contesting.com>
> Sent: Monday, February 06, 2006 5:14 PM
> Subject: [TenTec] Hercules II anomaly?
>
>
>> Well I have a new one? I have recently noticed a discrepancy between the
>> SWR measured by my Orion (internal tuner disabled) and by my LDG DWM-4
>> wattmeter. I've checked the LDG meter with my Bird and all seems okay.
>> So
>> I've tried to isolate the problem.
>>
>> The problem disappears when I take the Hercules II out of the circuit.
>> My
>> problem occurs on 20 metres with the rig showing an SWR of about 2.5 : 1
>> and
>> the external meter about 1.4 : 1. When I remove the Herc input and
>> output
>> coaxes from the amp and connect them together with an Amphenol barrel
>> connector both meters read an SWR of about 1.4 : 1? With power, control
>> and
>> keying loop cables removed the problem still exists.
>>
>> Of course all of this is happening with the Herc off and the only
>> components
>> I can see in the circuit are the input relay - K1 and the vacuum relay.
>> Both are unenergized and normally closed with a DC resistance of less
>> than
>> 0.5 ohms. I have checked 80 metres, 17 metres and 15 metres and the
>> problem
>> does not occur there. It seems confined to 20?
>>
>> Thoughts appreciated. Thanks.
>>
>> 73,
>>
>> Rick
>> VE7TK
>>
>> Website: http://www3.telus.net/ve7tk
>>
>>
>> _______________________________________________
>> TenTec mailing list
>> TenTec@contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>>
>
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|