I know the current thread on  using a noise bridge deals with adjusting 
an antenna tuner, but  couldn't it also be used to find the resonant 
spot on an antenna that is resonant out of band?


73, Steve KW3A






On 8/29/2013 5:56 PM, Howard, W A 9 Y B W wrote:
> Tom,
>
> I just took a look, so-to-speak at the two units.  I can't tell the
> difference.  I had my sighted son look at them and he said the only
> difference was the MFJ or Vectronics names.  In fact, he said the font of
> the printing on the two units is identical, remove the manufacturers name
> and all is the same.
>
> Howard
>
> ----- Original Message -----
> From: "Tom Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, August 29, 2013 4:30 PM
> Subject: Re: MFJ Noise Bridge General Quiry
>
>
>> Howard:
>>
>> Is there any significant functional or quality difference between the two
>> noise bridge tuning aids?
>>
>> 73 de KB8TYJ
>>
>>
>> -----Original Message-----
>> From: For blind ham radio operators [mailto:[log in to unmask]]
>> On Behalf Of Howard, W A 9 Y B W
>> Sent: Thursday, August 29, 2013 5:05 PM
>> To: [log in to unmask]
>> Subject: Re: MFJ Noise Bridge General Quiry
>>
>> Bob,
>>
>> I purchased both one of the MFJ tunner aids and one of the Vectronics
>> tuner
>> aids in June and as of this morning it was still listed on the Vectronics
>> page of MFJ.
>>
>> The two units are identical in appearance and have the respective company
>> names.
>>
>> Howard #3
>>
>> ----- Original Message -----
>> From: "Bob, K8LR" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Thursday, August 29, 2013 3:29 PM
>> Subject: Re: MFJ Noise Bridge General Quiry
>>
>>
>>> I'm glad to see that MFJ has come out with the 212 noise bridge to
>>> replaced
>>> the discontinued VEC512.  If the new MFJ 212 works as well as the old
>>> VEC512, it is a great piece of equipment to put in line to quickly tune
>>> an
>>> antenna without transmitting a signal.
>>>
>>> Bob, K8LR, [log in to unmask]
>>>
>>> ----- Original Message -----
>>> From: "Tom Behler" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Thursday, August 29, 2013 4:03 PM
>>> Subject: Re: MFJ Noise Bridge General Quiry
>>>
>>>
>>> Howard:
>>>
>>> Thanks very much.
>>>
>>> What you sent earlier was actually quite self explanatory, so I guess
>>> that
>>> covers it.
>>>
>>> Tom Behler: KB8TYJ
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: For blind ham radio operators
>>> [mailto:[log in to unmask]]
>>> On Behalf Of Howard, W A 9 Y B W
>>> Sent: Thursday, August 29, 2013 1:43 PM
>>> To: [log in to unmask]
>>> Subject: Re: MFJ Noise Bridge General Quiry
>>>
>>> Tom,
>>>
>>> I included the complete instructions from MFJ in the body of my earlier
>>> post
>>> on the tuner aid.
>>>
>>> Howard #3
>>> ----- Original Message -----
>>> From: "Tom Behler" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Thursday, August 29, 2013 12:34 PM
>>> Subject: Re: MFJ Noise Bridge General Quiry
>>>
>>>
>>>> Got it, Howard.
>>>>
>>>> These are good points to be noted for sure.
>>>>
>>>> I'll be interested in what others have to say, but I especially like the
>>>> idea of not having to put a signal on the air.
>>>>
>>>> Does the noise bridge come with helpful instructions??  I ask this
>>>> because
>>>> in my experience with MFJ, their instruction manuals often leave a lot
>>>> to
>>>> be
>>>> desired.
>>>>
>>>> Tom Behler: KB8TYJ
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: For blind ham radio operators
>>>> [mailto:[log in to unmask]]
>>>> On Behalf Of Howard, W A 9 Y B W
>>>> Sent: Thursday, August 29, 2013 1:26 PM
>>>> To: [log in to unmask]
>>>> Subject: Re: MFJ Noise Bridge General Quiry
>>>>
>>>> Tom,
>>>>
>>>> By using the SWR function on your TW1 in the tone mode, you can tune
>>>> your
>>>> tuner for the lowest pitch tone which will be of course the lowest SWR.
>>>> In
>>>> order to adjust your tuner, you will have to transmit a signal on the
>>>> air.
>>>>
>>>> With the MFJ or Vectronics tuner aid, you do not have to put a signal on
>>>> the
>>>> air.
>>>>
>>>> It must be noted that the tuner aid is rated at 300 watts or less.  You
>>>> would insert this right after your transceiver and adjust your tuner
>>>> while
>>>> bypassing your linear amp, if you have one.
>>>>
>>>> 73
>>>>
>>>> Howard #3
>>>>
>>>> ----- Original Message -----
>>>> From: "Tom Behler" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: Thursday, August 29, 2013 12:13 PM
>>>> Subject: MFJ Noise Bridge General Quiry
>>>>
>>>>
>>>>> Hi, all.
>>>>>
>>>>> Please forgive this quiry, since I'm certain that, for many on the
>>>>> list,
>>>>> it
>>>>> is rather elementary.
>>>>>
>>>>> The recent discussion of the MFJ noise bridge, and its possible
>>>>> discontinuation, is making me want to learn more about the product and
>>>>> its
>>>>> potential usefulness for me.
>>>>>
>>>>> Right now, when I am working with antennas and my Tentech 238A manual
>>>>> tuner,
>>>>> I use the LDG TW1 to measure SWR, and both forward and reflected power.
>>>>> Although I do find the TW1 to be less-than-totally accurate, especially
>>>>> on
>>>>> the lower bands in comparison to the SWR/watt meter on my TS590, it has
>>>>> been
>>>>> sufficient in meeting  my needs at least for the most part.
>>>>>
>>>>> Is there a compelling reason why I might want to consider purchasing
>>>>> the
>>>>> MFJ
>>>>> noise bridge?  In other words, what could it help me with that the TW1
>>>>> is
>>>>> unable to do?
>>>>>
>>>>> Of course, one could always make the argument that the MFJ noise bridge
>>>>> could serve as a useful back-up, should my TW1 die, which may be a good
>>>>> enough argument in and of itself.
>>>>>
>>>>> Just thinking out loud here, I guess.
>>>>>
>>>>> Tom Behler: KB8TYJ
>
>
>