[Boatanchors] Watt Meter

[k0ewu at juno.com]

HI Keith, the Jones 711N is the 50 ohm, inline wattmeter with the coupler
in the case,
(which with a little ingenuiTy could be remoted). The catalogue shows the
circuit and has two internal pots to calibrate, both forward and reverse.
A remote indicator may be plugged into he side of the case.
As the unit is rated from 25 to 1000 mc you wil find a great discepancy
at 3.7 mc,
the instructions mentions thst corrections must be made beteen 25 and
100mc.
Sounds as if it is working ok? Try it on 2 mters? Price in 1959 about
$125.00!
old jack 



On Mon, 30 Jan 2006 01:02:32 -0600 "Duane Fischer, W8DBF"
<dfischer at usol.com> writes:
> Hey Keith,
> 
> You should also post this on the test gear list that specializes in 
> such 
> matters. There are some wizards of wire there that have more data 
> compressed 
> between their earlobes than modern super computers can store! From 
> earlobe 
> to earlobe those memory neurons are doing a constant dah dit dance 
> as they 
> process vintage facts about all sorts of ancient artifacts. Maybe 
> they 
> canhelp you:
> 
> test-equipment at mailman.qth.net
> 
> Happy restoration -
> 
> Duane W8DBF
> 
> 
> 
> 
> ---- Original Message ----- 
> From: "Keith Densmore" <densmore at idirect.com>
> To: <Boatanchors at mailman.qth.net>
> Sent: Sunday, January 29, 2006 11:48 AM
> Subject: [Boatanchors] Watt Meter
> 
> 
> > Greetings All,
> > I  found a Jones  MicroMatch 711N watt meter at the local Junque 
> Shoppe.
> > It works, but is way, way  out of calibration. I tried it on 80 
> meters 
> > into a 50 ohm load.
> > Anyone got a schematic or verbally offer advice before I open it 
> up?
> >
> > Regards to All,
> > Keith, ve3ts
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