Steve:
I asked the manufacturer of the antenna himself, and he emphatically said
"no", the 40 extra feet of RG8X coax wouldn't make a difference on 160
meters.
And, I know that Mike from the list pretty much said the same thing, and he
seems to know way more about the type of antenna I'm working with than I do.
Still and all, though, I sometimes do have to wonder.
73 from Tom Behler: KB8TYJ
----- Original Message -----
From: "Steve Dresser" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, November 16, 2011 10:21 PM
Subject: Re: SWR's continued
> Tom,
>
> Do you really need that long piece of coax? I think John Miller is right
> about what's happening. You might check the manual to see if the length
> of
> the coax is a factor. In some antennas, coax length is critical.
>
> Steve
>
> ----- Original Message -----
> From: "Tom Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, November 16, 2011 21:47
> Subject: Re: SWR's continued
>
>
>> John:
>>
>> My initial feeling here is that you might indeed be correct, but others
>> on
>> the list have a different opinion, when you consider the overall losses
>> for
>> 40 feet of RG8X on 160 meters.
>>
>> Actually, now, I don't know what to think.
>>
>> I guess I could just try it and see what happens, although I hate to go
>> to
>> all the trouble, not know ing for sure if it will help the situation.
>>
>> I'll continue to read the thoughts of any others on the list who might
>> want
>> to weigh in on this.
>>
>> 73 from Tom Behler: KB8TYJ
>>
>> ----- Original Message -----
>> From: "John Miller" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Wednesday, November 16, 2011 9:35 PM
>> Subject: Re: SWR's continued
>>
>>
>>> with 40 feet of coax coiled up, it's trying to radiate the coax, if you
>>> cut
>>> that section out, your readings and measurements will need to start over
>>> again, but they'll make more sense.
>>> ----- Original Message -----
>>> From: "Tom Behler" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Wednesday, November 16, 2011 9:17 PM
>>> Subject: SWR's continued
>>>
>>>
>>>> Well, I took the LDG TW1 out of the circuit, and made a direct
>>>> connection
>>>> to
>>>> the 160 meter sloper antenna.
>>>>
>>>> Lowest SWR according to the TS590 was 3.0 to 1--not as good at the TW1
>>>> read
>>>> with a 2.0 around 1.830 or 1.840, and when I went to the top of the
>>>> band,
>>>> the TS590 read "over" until I got down to around 1.900. The auto-tuner
>>>> didn't tune the antenna up above 1.900 either.
>>>>
>>>> Why it tunes the antenna throughout the entire band with the TW1 in the
>>>> circuit is beyond me at this point.
>>>>
>>>> Anyway, despite my efforts to shorten the thing about 9 or 10 feet, the
>>>> antenna still seems a bit long to me.
>>>>
>>>> 73 from Tom Behler: KB8TYJ
>>>
>>
>
|
