IG-18 Signal Generator - need identity of Q5, 417-201 / D1 & D2, 57-65

Mark Graalman WB8JKR wb8jkr at JUNO.COM
Thu Dec 5 21:29:52 EST 2002


   Hi Eric,

  The 417-201 is a 2N3906  and 57-65 in my IG-18 manual
are listed as 57-29 and they are 100 piv 100 ma diodes my guess
is that 1N914's would probably work.

73,  Mark  WB8JKR

On Thu, 5 Dec 2002 20:37:01 -0500 Eric Pierce <eric_pierce at SYMPATICO.CA>
writes:
> I am restoring an IG-18 Signal Generator, and need regular
> transistor
> equivalent number of Q5, (heath part 417-201) and the diode
> equivalent
> of D1 & D2 (heath part 57-65)
>
> I found a heathkit parts list at
>
>         http://members.tripod.com/~NRWILLIAMSON/index-2.html
>
> but it only does not go high enough for either (must be old)
>
> In fact, if anyone has the manual for the IG-18, I would be very
> interested in paying for copy/mail of the calibration, parts list
> and
> schematic (all I have is a rather fuzzy schematic from the net).
>
>
>
> Thanks
>
> Eric VA3EP
> www.thirdpla.net
>
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