[Towertalk] Detuned Mosley CL-36-M

[n4kg@juno.com]

The MOSLEY MATCH is a CAPACITIVELY coupled match.

So is the GAMMA  MATCH.  

Cushcraft and Wilson BOTH produced antennas with
Gamma Matches utilizing RG8 center conductor and
insulation inserted inside (3/8 ? inch OD) tubing as
the Gamma Capacitor.  Remember the 4 element
Skywalker series of monoband Yagi's from CC?

Neither has a DIRECT connection to the DE.
SO WHAT?  That's how CAPACITORS work.
What's all this skeptimism about?

Tom  N4KG

On Tue, 26 Mar 2002 20:06:15 -0600 "Gerald D'Entremont"
<w5ba@compuserve.com> writes:
> So...does it work?  I went to look at a CL-205 this afternoon,
> which is the 5L 20M monobander that utilizes a similar (identical?)
> feed system.  One half of the feed was missing...I'm presuming
> from your statement that one could fabricate a suitable replacement
> simply by stripping jacket and braid from some RG-8 and
> matching the opposing/remaining length?  maybe I'm not willing to
> take enough on faith, but there seems something intuitively "wrong"
> with a 'matching system' where the feedline has NO physical 
> connection
> to ANY part of the antenna!
> 
> 73, Gerald  W5BA  w5ba@compuserve.com
> 
> ----- Original Message ----- 
> From: <n4kg@juno.com>
> To: <TOWERTALK@contesting.com>
> Sent: Tuesday, March 26, 2002 6:46 PM
> Subject: Re: [Towertalk] Detuned Mosley CL-36-M
> 
> 
> > 
> > On Tue, 26 Mar 2002 16:39:06 -0500 Pete Smith 
> <n4zr@contesting.com>
> > writes:
> > >  As I recall, it had an odd feed system that  
> > > involved insulated wire inside the driven element, 
> > > presumably  providing  some sort of capacitive coupling. 
> > 
> > That is the "MOSLEY  MATCH"
> > 
> > The DE is tuned to present an inductive reactance which is 
> > canceled by the capacitance between the tubing and the 
> > symmetrical lengths of RG8 with the outer jacket and braid 
> removed.
> > 
> > Tom  N4KG
> > 
> > 
> > 
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