[TowerTalk] Measuring phase?

[Maurizio Panicara]

You don't need at all a great accuracy for effective phasing.
If for any reason or didactical purposes you wan't to be absolutely sure of
having exact phases, short or lenghten one line for a phase reversal (signal
cancellation) and the lenghten (or shorten) one of the lines 1/2 wl.
A rough phase check with a dual trace oscilloscope and a sufficient time
base is enough for practical purposes.
The use of X-Y could be critycal since X channel amp BW is generally much
less than that of Y amplifier.

73,
Mauri I4JMY


----- Original Message -----
From: "alsopb" <alsopb@gloryroad.net>
To: <towertalk@contesting.com>
Sent: Sunday, November 12, 2000 12:59 AM
Subject: [TowerTalk] Measuring phase?


> Here is an interesting problem.  Two antennas on different towers.
> Might be nice to phase them at times.
>
> Given the differing lengths and types of coax used.  How do I
> determine the current phase difference between them so that a
> compensating length of coax can be added?
>
> Perhaps point them both at shack and display as a Lissajou pattern?
> Don't think that's accurate enough.
>
> 73 de Brian/K3KO
>
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