Re: Epiphyte Digi readout pcb?

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From: John D. Spittle (jds@freenet.vancouver.bc.ca)
Date: Mon Sep 11 1995 - 17:49:01 EDT


Hi Frank:

Presumably you are referring to my article in SPRAT #83. I never
submitted a copy of my PCB layout as it used an M706BI 50Hz timebase..
This chip is no longer manufactured and I have given up on finding an
8-pin equivalent. Seems you will have to go the with the "alternative"
circuit given for the clock.

PLEASE NOTE ONE SMALL ERROR IN MY CIRCUIT AS SHOWN IN BOTH SPRAT & QRPp.
U-1 incorrectly shows two Pin 15s. Pin 15 goesto the re-set line as
shown; the other Pin 15, the input from the 2N3904, should have been
numbered PIN 13. My apologies for not having posted this correction
earlier.

Incidentally, I will be in the UK for a short vacation in about 10 days
time and expect to visit George. I will discuss with him whether there
is sufficient interest in coming up with a PCB. Main problem is that it
is not multiplexed and requires 32 wires to the display (not everone's
cup of tea!) or some pretty fine artwork. I will be bring one with me on
this trip. Maybe we can cross paths. George will know how to get hold
of me.

72/73 Derry VE7QK

On Mon, 11 Sep 1995
frank@yorks.demon.co.uk wrote:

> Hi, can anyone tell me if a pcb is available for the digital readout
> for the Epiphyte, as described in SPRAT?
> Thanks & 72/3
> --
> Frank G3YCC (G QRP 042)
> Email: frank@yorks.demon.co.uk
>
>


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