Ed:

I believe I remember that the bridge does have an off or bypass switch.

Can  check on that on the MFJ web site.

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 5:46 PM
To: [log in to unmask]
Subject: Re: RV DXCC Question (WAS) Your First Message Arrived

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