As I recall, the MFJ can handle up to 300 watts when in line, but
there is a switch that puts it off line. It's nice to know it won't
blow up if you forget to put it off line. I did that to another
noise bridge many years ago and burned the resistor in it.
73,
Dave, W7OQ
At 02:46 PM 6/29/2015, you wrote:
>Tom, in my case, the noise peak on the r x is not quite the same as the
>lowest s w r but close so it may work. I think the bridge would be a nice
>thing for you. You must take the bridge out of line however when
>transmitting.
>
>The bridge may have a bypass switch, I don't know. 73
>
>ED K7UC
>-----Original Message-----
>From: Tom Behler
>Sent: Monday, June 29, 2015 3:17 PM
>To: [log in to unmask]
>Subject: Re: RV DXCC Question (WAS) Your First Message Arrived
>
>Ed:
>
>I'm trying to figure out how to use the MFJ versatuner without having to
>remove my only TW1 talking SWR/watt meter from my home qth setup.
>
>Could I simply tune for greatest receive noise, or would that be too risky?
>
>I suppose another option would be to purchase one of those MFJ noise
>bridges--I believe it's the MFJ 212 if I remember correctly.
>
>I assume you would put the noise bridge between the rig and the tuner,
>correct?
>
>Tom Behler: KB8TYJ
>
>
>-----Original Message-----
>From: For blind ham radio operators [mailto:[log in to unmask]]
>On Behalf Of Ed Malmgren
>Sent: Monday, June 29, 2015 3:49 PM
>To: [log in to unmask]
>Subject: Re: RV DXCC Question (WAS) Your First Message Arrived
>
>Tom, you have heard right, they will de tune each other. shut the tuner in
>the rig down and use the m f j. G L.
>
>
>
>ED K7UC
>-----Original Message-----
>From: Tom Behler
>Sent: Monday, June 29, 2015 1:16 PM
>To: [log in to unmask]
>Subject: RV DXCC Question (WAS) Your First Message Arrived
>
>Dave:
>
>I understand, but here's my major question.
>
>Perhaps I should have just sent another e-mail with just this question:
>
>Don Terrell from Alpha Delta Engineering suggests that I simply use a
>wide-ranging tuner with my DXCC antenna out at the RV as it currently is,
>and call it good.
>
>So, here's what I'm thinking:
>
>I have an old MFJ 901B manual versatuner that is not being used for anything
>right now.
>
>Could I use that to basically tune the antenna, using receive noise as my
>indicator, and then just touch things up with the internal auto-tuner in the
>TS480?
>
>I have always heard that doing this would cause the tuners to work against
>each other, which could create real problems, but I never knew whether that
>was true or not.
>
>Of course, I do have an LDG TW1 talking SWR/watt meter at the home qth, but
>hate to tear things apart to use it during the relatively short times when
>we are camping.
>
>Does anyone have any wisdom on this latest idea?
>
>Tom Behler: KB8TYJ
>
>
>
>
>
>-----Original Message-----
>From: Dave Basden [mailto:[log in to unmask]]
>Sent: Monday, June 29, 2015 3:04 PM
>To: Tom Behler
>Subject: Your First Message Arrived
>
>Hi Tom,
>
>Perhaps the lack of comment was because everyone was recovering from Field
>Day, but your message did get through earlier. As for using the antenna
>despite the high SWR, I would say that if the TS-480 will tune it then use
>it. If the SWR is beyond its capacity, then perhaps an external tuner would
>give a match. After that it's a matter of whether you can make contacts on
>20. If so the SWR isn't something to worry about.
>
>73,
>
>Dave, W7OQ
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