[AMRadio] Ranger Audio... the numbers

Mike Dorworth, K4XM k4xm at arczip.com
Fri Nov 17 20:06:45 EST 2006

----- Original Message ----- 
From: "crawfish" <crawfish at surfmore.net>
To: "Discussion of AM Radio in the Amateur Service"
<amradio at mailman.qth.net>
Sent: Friday, November 17, 2006 7:54 PM
Subject: Re: [AMRadio] Ranger Audio... the numbers

> Impedance at the plates is more than 50 ohms.

Some measurements:

Ranger modulation Transformer

33 watts voice

Primary 7083.8 ohms plate to plate. Red is ct.
Secondary 3571 ohms. Black is ct. 892 ohms each side to tridode grids.

1.9837 Z stepdown ( nominal 2:1)

1.4085 step down turns ratio.. hope this helps someone.. mike

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