[Elecraft] W2 Question about SWR Reading

goldtr8 at charter.net goldtr8 at charter.net
Sun Sep 2 09:05:13 EDT 2012


Sorry for the confusion.

Sensor is after the output of the driver and before the input of the 
tuner.

AMP-------Sensor-------Tuner------coax to antennas

So how does one determine what is changing with power variation.

~73
Don
KD8NNU
FH#4107


On Sun, Sep 2, 2012 at 8:57 AM, Don Wilhelm wrote:

> Don,
>
> I am confused about where your sensor is.
> In one paragraph, you say the sensor is "between my antenna tuner and 
> amp"
> further down you say the sensor is "after the tuner and before the 
> amp"
>
> So, do you have the sensor at the output of your driver and before the 
> input of your amplifier, or is the sensor at the output of your 
> amplifier and before the input to your tuner?
>
> One thing is to be indicated by that flickering of SWR is that 
> something is changing characteristics with power variation.
> But with the confusion of your sensor location it is difficult to say 
> whether that is at the amp input, the tuner input or the antenna 
> system.
>
> 73,
> Don W3FPR
>
> On 9/2/2012 8:34 AM, goldtr8 at charter.net wrote:
>> I have been using my W2 for about a week now and I am trying to
>> understand why it is doing what it is doing.
>>
>> Basically I can get my SWR reading tuned in fine using normal tuning
>> procedures and then turn on the amp and whistle in it and the SWR
>> changes very little.
>>
>> However when I go to TX using phone it bounces all over the place and
>> goes signficanlty higher than I would expect.   This bouncing effect 
>> is
>> tuner engaged or no engaged with resonant areas of the antennas.
>>
>>


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