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[time-freq] TADD-3 Manual Errata

John Ackermann N8UR jra at febo.com
Wed May 31 23:59:39 UTC 2006

Thanks for the comments, Bdale.  I'll update the manual accordingly.

The headers being spread out was due to a kitting error -- I had
miscounted the number of headers when splitting up the parts, and
discovered the error after the first set of envelopes was sealed.  I can
put a note in the manual to explain that.


Bdale Garbee said the following on 05/30/2006 10:02 PM:
> I put a TADD-3 kit together this afternoon, using a copy of the manual
> downloaded mid-day today.  A few notes seem in order.
> It was a little confusing having the 3-pin headers split between two
> paper envelopes (headers, and misc-2, if I recall correctly).  If I had
> actually checked all the parts against the inventory before I started
> assembly I might have been less confused...
> The parts inventory says there should be 15 shorting blocks, but only 14
> were provided.  (no worries, I have lots of berg jumpers around)
> The parts inventory calls out two 10-pin headers.  The text of the
> manual explains that it might be a snap-able 20-pin header, suggest
> putting that in the parts inventory too.
> Under capacitor installation, there is a typo in the line for installing
> the 0.1uF caps... it should say (104), not (102).
> Under initial test 2, there's an outright mistake.  It says to measure
> the 5 volt rail on the cathode of D1... but D1 is on the input of the
> regulator, not the output.  I suggest probing suitable pins on the IC
> sockets as a better test anyway.
> For what it's worth, my board drew about 7ma in the first ammeter test,
> and 68.4ma in the second ammeter test.
> Took a little over an hour to assemble, initial testing looks good.
> Thanks for another very useful kit!
> 73 - Bdale, KB0G
> ps:  Based on comments earlier on the list, I chose Hammond boxes from
> Mouser, stock number 546-1402F for a TADD-1, a TADD-3, and some other
> bits and pieces to sit on top of my old HP 58503A... and a 546-1402B for
> the TADD-1 that will end up in the shed with the EME transceivers.  Will
> try to remember to put some pictures up once everything is mounted.
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