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October 28th 04, 02:15 AM

In article ,
(William) writes:

(Steve Robeson K4CAP) wrote in message
...
ubject: Graph paper
From: (Len Over 21)
Date: 10/27/2004 12:38 PM Central Standard Time
Message-id:

Good for one-of-a-kind projects.

What "one-of-a-kind" project, Lennie?

You can't put a 2N2222 on the air.

Steve, K4YZ

Oh, my! Len responds with something Quiteuseful in a Quitecivil tone,
and he gets more Quiteuncivil Extra-class discourse. What is RRAP
coming to?

I think one MUST be federally tested in morse code and have a
federal amateur merit badge callsign in order to post anything in
here. :-)

A 2N2222 is a legacy NPN transistor that dates back to the
beginning of the 1970s as a MIL part (in the small metal can).
Several variants survive today, including a TO-92 case plastic
variety from ST (Germany). It's about 9 cents in quantity from
Mouser or Allied. [price may vary slightly so check their
on-line catalogs]

I do believe that is the NPN bipolar used in one of the "Tuna-Tin
Two" variants. :-) Not exactly a world-shaking full gallon
output. bwahahahahahahahahahahahahahahahahahah.

Sorry about the snicker. I got like totatlly underwhelmed by
the "qualified medical professional" venturing outside of his
bedpan expertise into tuna can expertise.

The scanner-printer-photo-edit process can be very useful to
anyone doing one-of-a-kind PCB projects, regardless of the
application. That includes preparing an etch resist mask for
1:1 scale using prepped photosensitive board stock.

For some good buys on either "raw" PCB stock or the
positive sensitized variety, I'd investigate Circuit-Specialists
in AZ or Ocean State Electronics in RI or even Marlin P
Jones in FL. All have both website and paper catalogs.

For "prototype board" 3-hole-pad (one side) that can hold
up to 30 DIPs, Circuit-Specialists' PC-407912 is quite good
with 4 1/2" x 6 1/2" size, 44-pin edge connector on one end.
Made by "Syntax" and similar to the Douglas Electronics
11-DE series. Wiring can be done with Kynar or Teflon
insulated #24 or #26 solid at frequencies up to about 60 MHz
digital. [I have a bulk buy quantity of MIL-E-16878 teflon wire
that I use but heavy Kynar wire-wrap solid will work for that]

Actually, I *can* get "on the air" with a legacy NPN such as
a '2222 or even a 2N3904 but prefer a later design with a
higher cutoff frequency and higher power dissipation. CAPman
doesn't understand that his ham license would cause a beef if
he tried to "get on the air" OFF the ham bands. Mine does and
also enables a bit of extra income. Tsk. He would NOT be
legal either way trying to use his ham license for that! :-)

Back to GRAPH PAPER: A few years ago some website was
offering "free" JPGs of K&E graph paper forms (they have many
dozens of varieties). That site was unaware of (or flaunted) the
Copyright laws and pulled the stuff to avoid LEGAL problems.
:-) There's nothing to stop an individual from copying their own
forms for their own private use...again, a good photo scanner is
a must there but those cost under $150 at worst-buy electronics
stores. Nobody is going to crawl through the computer and flash
their shiny Raddio Kopp badges for doing so...although some try
to do that. They have NO power of arrest. Most are products of
some kind of arrested development. :-)

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