[Test-Equipment] M.C. Jones Model 711N MicroMatch

[Richard Knoppow]

----- Original Message ----- 
From: <k4pf at juno.com>
To: <test-equipment at mailman.qth.net>
Sent: Sunday, September 25, 2011 7:31 PM
Subject: Re: [Test-Equipment] M.C. Jones Model 711N 
MicroMatch


>
> Hi, Jeff
>
> I have a 711N also, the later model
> when MC Jones was bought by Bendix Microwave Div.
>
> I bought a manual from A.G. Tannenbaum, but you can save
> your money, because there is hardly any info in the manual
> (for instance, no schematic of the pickup element).
>
> The specs are as follows:
>
> Freq Range 25 to 1000 MHz
>
> Power Range  3 scales of 0 to 30, 30 to 75,
> and 75 to 300 Watts
>
> Impedance 51.5 Ohms
>
> Accuracy +/- 5% of full scale for any range.
>
> RF Connectors  type N to mate with UG-21/U connectors
> attached to either RG-8/U of RG-9/U cable.
>
> Adapters  Two adapters UG-146/U (N to UHF) are supplied.
>
> The date on the outline drawing is 12-9-53.
>
> The manual includes a forward/reflected power ratio to SWR 
> chart,
> similar to that Bird includes in their manuals.
>
> The panel meter is by Honeywell, 30uA dc full scale
> (by observation on my meter).
>
> 73,
> Ed Knobloch
>
>> n2lxm at juno.com wrote
> I picked up a M.C. Jones Model 711N MicroMatch at our 
> clubs
> Hamfest Saturday. Dose anyone have a manual for this RF 
> Meter.
> A pdf file would just fine. Thanks
>

     The original article describing the Micromatch is in 
QST for April 1947. There is a description of an upgraded 
version from the March 1955 edition of QST at: 
http://www.cqham.ru/zm.htm
This may be pretty close to the commercial version you have.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com