TopBand: z measurements

[Brian McGinness]

The delta OIB-2 is 1.8-30 mhz. A few have shown up recently at
the Rochester NY hamfest, and a number of us got one.

Everyone keep your eyes peeled for these gems! They work
great, and you can use full legal limit through them if you
want to. We used one to optimize the verticals in W3LPL's
four-square and they really work great.

On another subject, how needed is FS on 160m? I will be in
FS the week after CQWW SSB and have my FS license, should I
try to erect a 160 antenna or not bother?

And as usual, V2 will be on 160 CW before and after CQWW SSB if
that is still needed.

73, Brian N3OC / V26OC / FS/N3OC

At 07:07 AM 8/6/98 EDT, W8AV@aol.com wrote:
>
>In a message dated 98-08-06 00:01:07 EDT, you write:
>
><< Does anyone know if this bridge will work on 160m, and/or if GR made
>another
> model for hf?  I thought about making my own bridge since I have an estimate
> of what impedances are involved, but suspect that would be one too many
> projects for this summer.  Any ideas of info?  73 Bob W7LR in Montana.
Not as
> hot as Texas but still about 95 daytime.  
>  >>
>
>I don't know much abolut the GR-1603A bridge but would assume from what you
>posted that it might not work.  I will research it though.  As for another GR
>bridge that will work on 160 try the GR-1606A.  I have one here that I use to
>measure the impedances on my 160 vertical and it works fine.  Or, if you can
>find a broadcast station that has a Delta OIB-1 or OIB-3 that you can borow,
>that would work very well too.
>
>A word of caution , though.  Do not put more than about a watt or two into
the
>input side of a GR-1606 bridge from the signal source.  If you do you will
fry
>the small current limiting resistor in the input of the bridge (learned that
>one the hard way).  I use my MFJ -259 as the signal source and either a
rig or
>a commercial Potomac FIM field strength meter for the detector.  The
>arrangement works fine.  If you use the OIB you can put up to 5 kW into it if
>need be with no adverse effects (although 100w will be more than enuf).
>
>Hope that this helps.
>
>73...................de Goose W8AV
>
>--
>FAQ on WWW:               http://www.contesting.com/topband.html
>Submissions:              topband@contesting.com
>Administrative requests:  topband-REQUEST@contesting.com
>Problems:                 owner-topband@contesting.com
>
>

--
FAQ on WWW:               http://www.contesting.com/topband.html
Submissions:              topband@contesting.com
Administrative requests:  topband-REQUEST@contesting.com
Problems:                 owner-topband@contesting.com