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Subject:
Re: Tuning aids, noise bridges, etc.
From:
Gerry Learry <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Fri, 17 Aug 2012 05:35:10 -0600
Content-Type:
text/plain
Parts/Attachments:
text/plain (68 lines) 
Oh, I didn't know that.  That might be a fun project.  I have only taken the 
High Sierra screwdrivers apart, so I don't know anything about the others.
----- Original Message ----- 
From: "Tom Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, August 17, 2012 4:52 AM
Subject: Re: Tuning aids, noise bridges, etc.


>    Yeah, but Gerry, I think something is actually internally wrong with 
> the
> screw-driver.  It used to perform much better where it is now, in that I
> could at least use it on 40, 20, and 10 meters, and even 80 if I really
> worked hard at tuning it.  Now, it only works on 20, and not very well at
> that.
>
> I'm going to have to tear the thing apart, and see what the story 
> is--sounds
> like a good winter week-end project.
>
> I'm thinking the G5RV might get me at least back up and running quickly 
> for
> the rest of the camping season.
>
> 73 from Tom Behler:  KB8TYJ
> ----- Original Message ----- 
> From: "Gerry Learry" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, August 17, 2012 6:41 AM
> Subject: Re: Tuning aids, noise bridges, etc.
>
>
>> Hey Tom,
>>
>> Here is another antenna idea.  Take the screwdriver and mount it on a
>> tripod
>> away from the RV.  Then you can use a Coax jumper between the Antenna and
>> rig and maybe moving it away from the RV will help it get out.`s
>> ----- Original Message ----- 
>> From: "Tom Behler" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Thursday, August 16, 2012 5:33 PM
>> Subject: Re: Tuning aids, noise bridges, etc.
>>
>>
>>>    Works for me too, Howard, so thanks a lot!
>>>
>>> 73 de KB8TYJ
>>>
>>> ----- Original Message ----- 
>>> From: "Howard Kaufman" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Thursday, August 16, 2012 8:17 AM
>>> Subject: Re: Tuning aids, noise bridges, etc.
>>>
>>>
>>>> Tom, they are really cool!  They generate noise that is nulled out when
>>>> they
>>>> see an adjustable resistence, usually 50 ohms.  So when the noise
>>>> disapears
>>>> from the receiver, you have matched a 50 ohm impedence.  I think of it
>>>> as
>>>> an
>>>> audible grid dip meter.
>>>> That may not be technically correct, but that image works for me.
>>>>
>>

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