Most of the older radios couldn't turn it off except the high end ones.
----- Original Message ----- 
From: "Steve Dresser" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, January 06, 2014 5:12 PM
Subject: Re: MFJ Noise Bridge Again


> Hi Lou,
>
> Interesting that the AGC couldn't be turned off on your 440.  I never 
> owned
> a 440, so I didn't realize that.  I guess Kenwood has thought better of 
> that
> for their new radios; I can turn the AGC off on my 480, 590, and 2000.
>
> Steve
>
> ----- Original Message ----- 
> From: "Lou Kolb" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, January 06, 2014 16:32
> Subject: Re: MFJ Noise Bridge Again
>
>
>> Steve,
>>
>> Sorry, I just saw this today.  Mostly older rigs might not have an AGC 
>> off
>> option.  My TS440 for one.  You can switch between slow and fast but you
>> can't turn it off on that rig.  The K3, of course, is completely
>> different.
>> Not only can you turn it off but configure several different aspects of
>> AGC
>> performance.  i live in a rather noisy location but now have the receiver
>> behaving much more quietly since finding an article about it online and
>> following its reccomendations.  I imagine the 590 is similar.  73.  Lou
>> Lou Kolb
>> Voice-over Artist:
>> Radio/TV Ads, Video narrations
>> Messages On-hold:
>> www.loukolb.com
>> ----- Original Message ----- 
>> From: "Steve Dresser" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Wednesday, January 01, 2014 2:05 PM
>> Subject: Re: MFJ Noise Bridge Again
>>
>>
>>> Lou,
>>>
>>> I've never heard of a rig that didn't have a way to turn the AGC on and
>>> off.
>>> What ones have that non-feature?
>>>
>>> Steve
>>>
>>> ----- Original Message ----- 
>>> From: "Lou Kolb" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Wednesday, January 01, 2014 12:28
>>> Subject: Re: MFJ Noise Bridge Again
>>>
>>>
>>>> Tom,
>>>>
>>>> Turning down the RF gain is a good idea and turning off the AGC, if
>>>> possible, is an even better one.  Of course, the AGC activity would 
>>>> make
>>>> it
>>>> difficult if not impossible to hear the null.  I turn mine off when
>>>> trying
>>>> to orient the beam on a signal but I know not every rig has this
>>>> function
>>>> available.  Good luck.
>>>> Lou Kolb
>>>> Voice-over Artist:
>>>> Radio/TV Ads, Video narrations
>>>> Messages On-hold:
>>>> www.loukolb.com
>>>> ----- Original Message ----- 
>>>> From: "Tom Behler" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: Wednesday, January 01, 2014 11:22 AM
>>>> Subject: Re: MFJ Noise Bridge Again
>>>>
>>>>
>>>>> Howard:
>>>>>
>>>>> I think I'll have to back the RF gain down on the TS480 at least
>>>>> somewhat
>>>>> in
>>>>> order to effectively work with the noise bridge, based on my limited
>>>>> experience with the device and my TS590.  Adjusting the RF gain on the
>>>>> 480
>>>>> is, of course, a bit of a hassle, since you have to do it via the 
>>>>> front
>>>>> panel keypad and function knob, rather than a simple single knob
>>>>> adjustment,
>>>>> but it is doable.  I seem to recall it is number 6, but will have to
>>>>> check
>>>>> the manual.
>>>>>
>>>>> In any case, I'm not going to go out into the RV today and try it,
>>>>> since
>>>>> temps are in the single digits, wind chills are below 0, and since I'd
>>>>> have
>>>>> to trudge through at least 12 inches of snow to get there.  (grin)
>>>>>
>>>>> Tom Behler: KB8TYJ
>>>>>
>>>>>
>>>>> -----Original Message-----
>>>>> From: For blind ham radio operators
>>>>> [mailto:[log in to unmask]]
>>>>> On Behalf Of Howard Kaufman
>>>>> Sent: Wednesday, January 01, 2014 11:11 AM
>>>>> To: [log in to unmask]
>>>>> Subject: Re: MFJ Noise Bridge Again
>>>>>
>>>>> Tom, you got it right!
>>>>> The minimum pulse is very accurate.  Any additional circuitry adds
>>>>> loss.
>>>>> I am not sure if you can just attenuate the signal while listening on
>>>>> the
>>>>> 480, or if you will have to crank the rf gain back as well.
>>>>>
>>>>>
>>>>> ---
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>>>>
>>