Re: {Collins} 74A4 Vintage Manual pictures



I had SN 5763 at one time...  current owner unknown.   73,

Walt  K5SXO

Walt Van Arsdale
Pygmy Wizard Computing
mailto:  varsdale@xxxxxxxxxxx
903.267.3770 mobile

-----Original Message-----
From: collins-bounces@xxxxxxxxxxxxx
[mailto:collins-bounces@xxxxxxxxxxxxx]On Behalf Of RFD
Sent: Thursday, January 08, 2009 6:14 AM
To: collins@xxxxxxxxxxxxx
Subject: {Collins} 74A4 Vintage Manual pictures


1. I have a 75A4 with SN 5458 which I understand is late
number.  From Mar 1971 the previous owner (SK) has written
in the manual that SN 5638 was latest serial number made.
Can anyone verify this info?

2. Also the manual I have is dated......

1 March 1955
3rd Edition  - 1 December 1956
2nd revision. - 15 July 1957

Is there a later edition of the manual ?

3. Also I want to try and identify the various capacitors
that may need to be replaced.  I have info on what may  need
to be done but its really difficult to work from the
photographs in Fig 5.3 page 1 showing the location of the
parts.

Would anyone have large photos with labels in higher
resolution.?

73 Frank VO1HP

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