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
>