[1000mp] MPV Driving Amp

Mon Oct 23 19:46:48 EDT 2006

Hello Win:

The module is now available from GAP Antenna Products,  www.gapantenna.com
.  They label it slightly differently for the US market, now that it is
available here.  It certainly is less money than buying it as the ANEM from
the UK.

It is a great Mark V upgrade, even if you have already installed the Inrad
roofing filter or IF Amp, you will see a really nice improvement.

You were certainly careful with the pruning side connector.  My clothespin
method is a bit faster, but probably not as safe as what you used to obtain
the solution.

I'll see you in the pile ups on twenty.

73 and Happy DXing,

Mike
W2AJI

 Original Message ----- 
From: "Win" <w0lz at winlyn.us>
To: <1000mp at mailman.qth.net>
Sent: Monday, October 23, 2006 4:45 PM
Subject: Re: [1000mp] MPV Driving Amp

> Mike,
>
> The process took me about three hours.  It probably would have taken less
> time had I not chosen to do it after midnight.
>
> I cut the coax back in 6 inch segments.  Each time I  put the connector
on,
> I only soldered the very tip of the center wire. The compression of the
> reducer into the PL259 was adequate for a temporary ground connection.
This
> allowed me to keep using the same connector.
>
> There really was not much to it.  It was more piece work than anything.  I
> became very good at putting the connectors on, HI.
>
> Your article on the BHI module was quite interesting.  I would kind of
like
> to get one before the article appears in QST.  Will they be distributed in
> the US?  If not, I think I will go ahead and order one out of the UK.
>
> Thanks, again.
>
> Win
>
> ----- Original Message ----- 
> From: "Mike Schatzberg" <cherokeehillfarm at earthlink.net>
> To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
> Sent: Monday, October 23, 2006 2:22 PM
> Subject: Re: [1000mp] MPV Driving Amp
>
>
> > Nice going Win:
> >
> > Interesting how the Collins length of 20.5 feet dropped you well into
the
> > area where there is no danger of power foldback.
> >
> > I also see that the solution worked as well on 20 meters as it did on 15
> > meters where the pruning was done.
> >
> > What we have from your data is that a length of 20.5 feet with the RG 8X
> > Radio Works cable provides a simple solution to matching the Mark V into
> > your modified SB 220.  Other people will have to reach their own
solution
> > for their own configuration.
> >
> > You might let the folks know about how long you had to work on the
project
> > to obtain the solution.  I wouldn't think that it would have been too
> > long.
> >
> > I have explained this simple system for evaluation to many stations over
> > the
> > years, but I don't usually get the details about exactly how well it
> > worked.
> > But I normally do hear that the results were the same as yours.
> >
> > Thanks for sharing your efforts with the reflector, "One experiment is
> > indeed worth a thousand expert opinions".
> >
> > By the way, you might want to check out my website which has an early
> > draft
> > of an article which will appear in
> > QST later this year or early next year.  It concerns an improvement for
> > the
> > Mark V in receiver audio DSP.
> >
> > I hope to find you soon on 20 meters enjoying your configuration.
> >
> > 73 and Happy DXing,
> >
> > Mike
> > W2AJI
> > http://home.earthlink.net/~cherokeehillfarm/id2.html
> >
> >
> > ----- Original Message ----- 
> > From: "Win" <w0lz at winlyn.us>
> > To: <1000mp at mailman.qth.net>
> > Sent: Monday, October 23, 2006 12:45 PM
> > Subject: [1000mp] MPV Driving Amp
> >
> >
> > OK, Mike, and anyone else that is interested, I started with 23 feet of
> > RG8X
> > Premium Low Loss, FV 78% Center # 16, 1.2 db per 100' at 15 MHz coax
from
> > Radio Works. Drive was 30 watts on 15 meters into a old SB-220 that is
> > somewhat modified for QSK and 10 meters,among other things.
> >
> > At 23 feet the SWR was 1.75:1 into the Amp - !,2:1 to the antenna
> > At 20.5 feet the SWR was 1.15:1 into the Amp _ 1.2:1 to the antenna
> >
> > The readings in between I am leaving out because I was tired and don't
> > trust
> > my notes.
> >
> > With the 20.5 foot cable SWR on 20 and 10 meters into the amp was 1.2;1
> > into
> > the amp and 1.2:1 to the antenna.
> >
> > It works for me.  Thank you very much.
> >
> > Win
> > ______________________________________________________________
> > 1000mp mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/1000mp
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:1000mp at mailman.qth.net
> >
> > ______________________________________________________________
> > 1000mp mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/1000mp
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:1000mp at mailman.qth.net
> >
> >
> > -- 
> > No virus found in this incoming message.
> > Checked by AVG Free Edition.
> > Version: 7.5.428 / Virus Database: 268.13.11/492 - Release Date:
> > 10/23/2006 9:40 AM
> >
> >
>
> ______________________________________________________________
> 1000mp mailing list
> Home: http://mailman.qth.net/mailman/listinfo/1000mp
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:1000mp at mailman.qth.net