Tom,
Better read some articles in QST that discuss SWR. Within limits, as long as
your rig sees a decent match, you will have no noticeable degradation in signal.
However, I think an external tuner will give you less insertion loss than what
you'll experience in an internal tuner.
Since the G5RV is by nature a compromise antenna, I'm not surprised that you are
seeing a higher SWR than you might normally expect.
Steve, K8SP
----- Original Message -----
From: "T Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, December 27, 2007 10:05 PM
Subject: Re: more G5RV stuff
So, John, you're saying that I should feel safe in using the antenna, so
long as I tune it with the rig's auto-tuner?
What do the others think?
I know the G5RV is a compromise antenna at best, so maybe the high-sounding
SWR readings aren't a problem, as long at the auto-tuner can still make the
radio happy. Am I correct here?
73 from Tom Behler: KB8TYJ
----- Original Message -----
From: "John Miller" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, December 27, 2007 9:45 PM
Subject: Re: more G5RV stuff
> Mine isn't much better, I'd say that's pretty typical.
> ----- Original Message -----
> From: "T Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, December 27, 2007 9:09 PM
> Subject: more G5RV stuff
>
>
>> Hi, all.
>>
>> Can someone tell me what an acceptable SWR picture would be for a
>> 102-foot
>> G5RV antenna?
>>
>> I re-oriented my G5RV antenna today, by making the ladder-line run pretty
>> much vertically from the antenna feed-point at the top of my 35-foot
>> tower,
>> to the coax that then goes into my shack from the base of the tower. I
>> checked the connections between the ladder-line and the coax feedline,
>> and
>> they still seem to be good.
>>
>> My SWR's are a bit better, and the auto-tuners on both my IC746 and
>> Kenwood
>> TS480 now tune the antenna on 40 meters (which I couldn't say before),
>> but
>> the SWR's still seem quite high to me.
>>
>> On 40 meters, I get an SWR anywhere from about 5 to 1 down to about 4 to
>> 1.
>>
>> The antenna has its best SWR readings on 20 meters, which you'd expect,
>> but
>> even here, I can't get the SWR to go much below about 1.8 to 1 in the
>> center
>> of the band.
>>
>> Again, at least now, the auto-tuners in both of my HF rigs will tune the
>> antenna, but I'm wondering whether it's even safe or wise to use the
>> antenna
>> under these conditions.
>>
>> 73 from Tom Behler: KB8TYJ
>>
>
>
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