You're quite welcome!

73

Ron Miller

On Aug 16, 2012, at 7:54 PM, Tom Behler <[log in to unmask]> wrote:

>    Thanks, Ron de KB8TYJ
> 
> ----- Original Message ----- 
> From: "Ron Miller" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, August 16, 2012 4:03 PM
> Subject: Re: Tuning aids, noise bridges, etc.
> 
> 
>> Hi Tom,
>> You put the tuning aid in line between the antenna tuner and the radio. 
>> When=
>> you  turn it on, you'll hear white noise in the receiver, the Palomar unit 
>> a=
>> nd, I think, the MFJ units pulse the noise to make it more distinct. You 
>> beg=
>> in adjusting your manual tuner listening for a null inthe white noise. 
>> It's u=
>> sually a deep dip inthe noise. When you've made the white noise disappear 
>> as=
>> much as possible, you're as close to 50  ohms as your tuner will get with 
>> t=
>> he currently connected antena. If you practice with a 50 ohm dummy load, 
>> or a=
>> known resonant antenna, you'll get very good at hearing the nice, deep 
>> null=
>> that indicates a good match instead ofthe  shallower one that indicates a 
>> g=
>> reater miss-match.
>> 
>> 73
>> 
>> Ron Miller
>> On Aug 16, 2012, at 6:55 AM, Tom Behler <[log in to unmask]> wrote:
>> 
>>>       Ron:
>>> =20
>>> So, how exactly does a noise bridge work?
>>> =20
>>> I have some ideas, but how do you tune the antenna without transmitting, 
>>> a=
>> nd=20
>>> be sure your SWR is low?
>>> =20
>>> As I said in my last post, I'm new with regard to those devices, even 
>>> afte=
>> r=20
>>> all these years of hamming.
>>> =20
>>> 73 from Tom Behler: KB8TYJ
>>> =20
>>> ----- Original Message -----=20
>>> From: "Ron Miller" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Wednesday, August 15, 2012 11:55 PM
>>> Subject: Re: Tuning aids, noise bridges, etc.
>>> =20
>>> =20
>>>> The downside of tuning aids such as the Adam is that you'll be=20
>>>> transmitting
>>>> a signal, either continuously or in short bursts--annoying to those 
>>>> aroun=
>> d
>>>> you. A noise bridge type tuning aid let's you couple the antenna without
>>>> transmitting a signal. Much more considerate to your fellow hams.
>>>> =20
>>>> 73
>>>> =20
>>>> Ron Miller
>>