Hi,

If you can't turn off the agc, just turn down the RF gain.

Bob, K8LR, [log in to unmask]

----- Original Message ----- 
From: "Lou Kolb" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, January 06, 2014 4:32 PM
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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>>