[Elecraft] KAT3 in 6m

[Vic K2VCO]

WA1ABI sent me a photo of the lead coiled up. That might do it.

On 8/16/2011 6:47 PM, Joe Subich, W4TV wrote:
>
>> What makes me quibble is that I don't think that the very small
>  > difference in cable lengths -- 1 or 2 cm -- could possibly make a
>  > difference at 6 m.
>
> Just thinking out loud ... lead dress might make a difference. Since
> ANT 1 is closer to the place the wires pug into the KAT3, a builder
> might coil the excess wire while ANT 2 might be straight. The extra
> inductance ANT 1 vs. ANT 2 might make a difference.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 8/16/2011 8:51 PM, Vic K2VCO wrote:
>> Well, that takes care of most of my points. There is a possibility that even 'bypass' is
>> different for ant1/2, because, as you know, 'bypass' compensates for the reactance of the
>> traces, etc. and does not actually remove the tuner from the circuit.
>>
>> What makes me quibble is that I don't think that the very small difference in cable
>> lengths -- 1 or 2 cm -- could possibly make a difference at 6 m.
>>
>>
>> On 8/16/2011 3:48 PM, Johnny Siu wrote:
>>> Perhaps, I should clarify my measurement. The power readings were taken by LP100A on a
>>> Bird dummy load under 'BYPASS' mode. To reiterate, inmy case, I got higher RF output when
>>> connecting my 6m ant to ANT 1.
>>>
>>> TNX& 73,
>>>
>>>
>>> Johnny VR2XMC
>>> *從︰* Vic K2VCO<k2vco.vic at gmail.com>
>>> *收件人︰* elecraft at mailman.qth.net
>>> *傳送日期︰* 2011年08月16日 (週二) 11:37 PM
>>> *主題︰* Re: [Elecraft] KAT3 in 6m
>>>
>>> But keep in mind that the antenna tuner parameters are saved per band AND per antenna. So
>>> the tuner may be set slightly differently for the two antenna outputs. I suspect that if
>>> you set the tuner to BYPASS and checked with a dummy load they would be the same.
>>>
>>> Also many digital wattmeters have poor resolution. Maybe the difference between 82 and 92
>>> watts is just one bit and the power is close to 87 watts in both cases!
>>>
>>> On 8/15/2011 11:00 PM, Johnny Siu wrote:
>>> >
>>> > Hello Group,
>>> >
>>> > I found something interesting. As some of you may be aware the pin 1 wire to ANT1 is
>>> > shorter than pin 2 wire to the ANT 2. All the way through, I connect my 6m hamstick to
>>> > ANT2 and 20m hamstick to ANT 1.
>>> >
>>> > Last evening, I did a swap with 6m hamstick on ANT 1(the one with shorter pin 1 wire).
>>> > I got 92w out which is more than the usual 82w. In other words, the length of the
>>> > wiring from the pin to ANT socket does matter. In my case, I got higher RF output when
>>> > connecting my 6m ant to ANT 1.
>>> >
>>> > There is no adverse effect to 20m hamstick which is connected to ANT 2. I just share my
>>> > experience with other elecrafters with low RF output in 6m.
>>> >
>>> > TNX& 73,
>>> >
>>> >
>>> > Johnny VR2XMC ______________________________________________________________ Elecraft


-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/