[Boatanchors] Tube Identification Help Please

[D C *Mac* Macdonald]

My RCA Receiving Tube Manual dated 2/70 does not show
any such tube.  Are you sure ing for 6AQA8 instead of a
6AQ8A?  Where did you find that tube I.D.?

I suspect that the Lafayette rig is Japanese-made and
Japanese-English instruction manuals were infamous for
their misprints, typos, etc.
 
The 6AQ8/6AQ8A were dual triodes, which would be consistent
with use as an combination audio amp/BFO function.

Triode #1 connections are:  Cathode - 8, Grid - 7, Plate - 6
Triode #2 connections are:  Cathode - 3, Grid - 2, Plate -1
Filament connections are: 3 and 4
Pin 9 is an internal shield.
 
"Normal" operation is at 250 VDC on plate, -2.3 VDC on grid.
 
73 -  Mac, K2GKK/5
(Since 30 Nov 53)
OKlahoma City, OK
 
 
 
________________________________
From: mccormick_mack at hotmail.com
To: Boatanchors at mailman.qth.net
Date: Sun, 21 Mar 2010 13:38:19 -0400
Subject: [Boatanchors] Tube Identification Help Please

I'm helping a friend restore a Lafayette HA-225. 

It has a 6AQA8 as the 1st AF amp/BFO. For the life
of me I can't find this tube's specs or where to find
a replacement. Of course, I can find the 6AQ8.
 
Any pointers on specs and sourcing a new one would be
most helpful.

Kind regards es 73,

Mack de WB4MAK
www.nfarl.org
www.sedxc.org