[Moon-net] [Mw] Pre-Tuning a 8877

[W2DRZ Thomas Mott]

Hi,

Use a 54 ohm for tube impedeance.input, 
output is 2,000 ohm.

tom W2DRZ

http://www.w2drz.ramcoinc.com/
----- Original Message ----- 
From: "Edward Cole" <kl7uw at acsalaska.net>
To: "Moon-Net" <moon-net at list-serv.davidv.net>
Cc: <microwave at echo.valinet.com>
Sent: Thursday, July 24, 2008 10:48 AM
Subject: [Mw] Pre-Tuning a 8877


>I recall hearing that one can use something like a 6K reisistor 
> across the cathode-grid on a gg 8877 to resemble input impedance for 
> pre-tuning the input ckts using a small signal from a MFJ-269 antenna 
> analyzer.  Can anyone confrim the input impedance for a 8877 
> (144-MHz)?  Should I have the tube inserted to include 
> inter-electrode capacitance?  This is with HV off, of course.
> 
> *****************************************************
> 73, Ed - KL7UW              BP40iq, 6m - 3cm
> 144-EME: FT-847, mgf-1801, 4x-xp20, 185w
> http://www.kl7uw.com     AK VHF-Up Group
> NA Rep. for DUBUS: dubususa at hotmail.com
> ***************************************************** 
> 
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