[Lowfer] LF Lop Antennas [AKA Loop Antennas]

[Chris Trask]

    I noticed that there are a few selective level meters available on eBay,
a pair of 3586's and a 3746A.  Does the 3746A provide a tracking signal?  I
saw in the eBay photos that there's a BNC connector on the rear labeled
"tracking generator".  Never understood what these level meters were used
for, but if it can be used with my GR bridges here I might be inclined to
acquire one.  I think there's one on the shelf at a local junk yard.

Chris

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----- Original Message -----
From: <jrusgrove at comcast.net>
To: "Discussion of the Lowfer (US, European, &amp; UK) and MedFer bands"
<lowfer at mailman.qth.net>
Sent: Monday, August 25, 2008 7:03 PM
Subject: Re: [Lowfer] LF Lop Antennas [AKA Loop Antennas]


> In agreement with John...
>
> I have an HP 4342A Q meter, and while it works well for certain tasks,
it's
> not that useful for others. Measuring capacitors and low Q ferrite
inductors
> (plus a variety of other tasks) is best done with a bridge - like the GR
> 516C that we're using.
>
> Marrying the bridge to an HP 3586C selective level meter makes a real nice
> frequency agile setup. The tracking generator output serves as the
generator
> and the receiver is used as the detector. While not exactly 'portable' I
do
> lug the setup out to the transmit antenna from time to time. Wouldn't
trade
> that bridge for anything.
>
> Jay
>
> ----- Original Message -----
> From: "John Andrews" <w1tag at w1tag.com>
> To: "Discussion of the Lowfer (US, European, &amp; UK) and MedFer bands"
> <lowfer at mailman.qth.net>
> Sent: Monday, August 25, 2008 8:38 PM
> Subject: Re: [Lowfer] LF Lop Antennas [AKA Loop Antennas]
>
>
> > Jay and I have impedance bridges that can measure these kinds of caps to
1
> > pF, and series resistances to 0.1 ohms. But you'd have to pry our cold,
> > dead hands from the bridges... <g>
> >
> > John A.
> >
> >
> >> As I recall the Boonton instruction book describes a procedure which is
> >> probably better than nothing but any decent capacitor is going to have
Q
> >> which is much higher than that of the test coil.
> > _______________________________________________
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