| Today arrived the little packet you sent me. All excited but without too much expectatons... just in case it didn't work i earthed myself up, formed its legs and plugged it in ****************************IT WORKS****************************** You're a star!!!!! my 301SD s back on the road. just need to put all the front panel back together tonight when i get home from work. check out the photo 1000 thanks mike |
| TESTIMONIALS FROM SATISFIED CUSTOMERS and some details on my hard to find parts and my testing capabilities for these rare/difficult to find parts. |
NOTES ON OLD HARD TO FIND ICs (Microcircuits)
Some of the old ICs..ie old Intel Microprocessor chips (big 40 pin Dual
in line types) and old chips..especially CMOS.. could be damaged.
I buy this stuff at flea markets and garage sales and some are in ESD
protective foam and others are stored loose in plastic bins.
NOW..if you buy an old IC like this from me..and say it is a rare
chip..and goes for typically $50 each from aftermarket
sources..(Rochester Electronics for example).
I will discount it to $25 ..AND..I will ask for only $5.00 ..then I will ship
you the chip. You can try it in your circuit and if it works for you..you
can send me the additional $20.00 (This is the business arrangement I
make to cover the risk). I have no practical way to verify if these LSI
chips will work or not.
I take all the risk. I have no way of testing some of these chips..so this
is the way I handle this situation.
Other parts..such as capacitors, coils, resistors, JFETs, transistors,
Dual Gate Mosfets..
I have test jigs for these parts and I generally test them before I send
them out.
Some of the old ICs..ie old Intel Microprocessor chips (big 40 pin Dual
in line types) and old chips..especially CMOS.. could be damaged.
I buy this stuff at flea markets and garage sales and some are in ESD
protective foam and others are stored loose in plastic bins.
NOW..if you buy an old IC like this from me..and say it is a rare
chip..and goes for typically $50 each from aftermarket
sources..(Rochester Electronics for example).
I will discount it to $25 ..AND..I will ask for only $5.00 ..then I will ship
you the chip. You can try it in your circuit and if it works for you..you
can send me the additional $20.00 (This is the business arrangement I
make to cover the risk). I have no practical way to verify if these LSI
chips will work or not.
I take all the risk. I have no way of testing some of these chips..so this
is the way I handle this situation.
Other parts..such as capacitors, coils, resistors, JFETs, transistors,
Dual Gate Mosfets..
I have test jigs for these parts and I generally test them before I send
them out.
HERE IS A CRYSTAL
CHECKING JIG I BUILT UP
RECENTLY TO VERIFY THE
OSCILLATING FREQUENCY
OF SOME OF THE
CRYSTALS I WAS GIVEN.
IM IN THE PROCESS OF
BUILDING MORE JIGS TO
TEST JFETS AND DUAL
GATE MOSFETS.
These mosfet and jfet
devices are quite
susceptible to static
damage and I want to be
able to test them before I
send them out of my shop.
I will be testing these parts
at both DC and at RF.
CHECKING JIG I BUILT UP
RECENTLY TO VERIFY THE
OSCILLATING FREQUENCY
OF SOME OF THE
CRYSTALS I WAS GIVEN.
IM IN THE PROCESS OF
BUILDING MORE JIGS TO
TEST JFETS AND DUAL
GATE MOSFETS.
These mosfet and jfet
devices are quite
susceptible to static
damage and I want to be
able to test them before I
send them out of my shop.
I will be testing these parts
at both DC and at RF.
link back to my home page of earl andrews.com
Here are a few of the old parts I
have. I took this picture on an ESD
mat and there seems to be some
glare and reflections.
I was hoping the part numbers of
these old Zilog Z80 series
would show up better.
I'll have to replace this picture
soon. I'm still getting used to this
new camera. I will take a better
picture soon with the part
numbers clearly visible.
The metal can packs with little data
sheet are old RTL -- Resistor
Transistor logic ICs.
RTL is really old stuff. I have the
part numbers and little data sheet
that came with these ICs. These
ones are not particularly static
sensitive.
TTL chips are not all that static
sensitive either. I sent an old
Texas Instrument TTL digital
readout chip to the fellow in the
Canary Islands. I cleaned the oxide
off the leads and told him the chip
may or may not work.
The chip was date stamped 1976.
I charged him only $5 for the chip
and told him if it worked..give me
an additional $5. --- this is what i do
for old or pulled ICs. Try it on my
risk and if it works then give me a
better price.
Anways..it worked fine for him.
That old chip I sent him was belly
up and loose in a plastic parts bin
for years and the leads had
oxidized a fair amount. Cmos chips
and some JFETS and dual gate
mosfets (especially the older ones
are extremely sensitive to static
and I have my doubts that if they
were stored in a plastic bin with no
ESD protection..that they would be
good as new. I think they would be
damaged.
have. I took this picture on an ESD
mat and there seems to be some
glare and reflections.
I was hoping the part numbers of
these old Zilog Z80 series
would show up better.
I'll have to replace this picture
soon. I'm still getting used to this
new camera. I will take a better
picture soon with the part
numbers clearly visible.
The metal can packs with little data
sheet are old RTL -- Resistor
Transistor logic ICs.
RTL is really old stuff. I have the
part numbers and little data sheet
that came with these ICs. These
ones are not particularly static
sensitive.
TTL chips are not all that static
sensitive either. I sent an old
Texas Instrument TTL digital
readout chip to the fellow in the
Canary Islands. I cleaned the oxide
off the leads and told him the chip
may or may not work.
The chip was date stamped 1976.
I charged him only $5 for the chip
and told him if it worked..give me
an additional $5. --- this is what i do
for old or pulled ICs. Try it on my
risk and if it works then give me a
better price.
Anways..it worked fine for him.
That old chip I sent him was belly
up and loose in a plastic parts bin
for years and the leads had
oxidized a fair amount. Cmos chips
and some JFETS and dual gate
mosfets (especially the older ones
are extremely sensitive to static
and I have my doubts that if they
were stored in a plastic bin with no
ESD protection..that they would be
good as new. I think they would be
damaged.
| The old RTL chips were in Radio Shack blister packs. They are old technology. They may be useful for historical purposes or for restoring an old piece of gear. These ones I have were from an estate sale and I have packed them in parts bins for high density storage. I kept the little data sheets in a book. They are for sale..as I don't think I will ever use them for anything myself. The same goes for these old Zilog and Motorola chips |
| BLESS THIS MESS!! I guess!!??? Spectrum Analyser, Sweep Generator, Leader 100mhz scope little black homebrew power supply and other test equipment. Its all there. Right now I'm sorting parts. |
Hi Earl,
The crystals arrived A-OK here --- many thanks!
I've tried several out already, & so far, so good, with one exception --- and
unfortunately, it's the one that I was especially hoping to listen to the
9.5-MHz SW BC band with...! Just my luck.
Oh well, more testing required still...
BTW, thanks for the extras you tossed-in, too --- much appreciated!
Have a great weekend, & my vy
~73~ Eddy VE3(identity protected)
The crystals arrived A-OK here --- many thanks!
I've tried several out already, & so far, so good, with one exception --- and
unfortunately, it's the one that I was especially hoping to listen to the
9.5-MHz SW BC band with...! Just my luck.
Oh well, more testing required still...
BTW, thanks for the extras you tossed-in, too --- much appreciated!
Have a great weekend, & my vy
~73~ Eddy VE3(identity protected)
The crystal order I sent to Eddy was a pretty good deal for him. This is typical of the kind of work and orders I do for hobbyists and
experimenters and people who tinker around with radio electronics. I sent him a dozen or so crystals for $10.00. I tested the crystals in my
little test jig. Now..a test jig cannot necessarily simulate the circuit where the crystal is being used (in all cases). I am working to build
more versatile and sophisticated crystal tester (I may buy one at a flea market if I get a good deal).
--- If only 1/3rd of the crystals worked out for him..it would still be a good deal because commercial crystals from a factory cost at least
$18.00 each if not more.
The IC for the FT301 for Mike worked out real well. It was a real old chip and I got it given to me in a bunch of parts drawers from a fellow
who was in charge of an estate. Sure there was junk I took home..but there were some real nice Gems in the junk drawers and some of
these rare ICs! --They were TTL chips of the mid seventies vintage. (I sold Mike this chip for $5.00 and told him if it worked for him..he
could send me another $5.00 later)..well it worked for him and he is pleased and I am pleased.
The turns counter was a result of me "networking" at the Whitby flea market (April 2008). The fellow was trying to gather some parts to
build an antenna tuner and he asked me if I might have one. I sold it for $8.00 plus the cost to send it to him. Glad he liked it. ---As I
recall..I paid $5.00 for this turns counter when I bought it at a flea market. So my profit was $3.00 (I am a small profit hobby/business).
experimenters and people who tinker around with radio electronics. I sent him a dozen or so crystals for $10.00. I tested the crystals in my
little test jig. Now..a test jig cannot necessarily simulate the circuit where the crystal is being used (in all cases). I am working to build
more versatile and sophisticated crystal tester (I may buy one at a flea market if I get a good deal).
--- If only 1/3rd of the crystals worked out for him..it would still be a good deal because commercial crystals from a factory cost at least
$18.00 each if not more.
The IC for the FT301 for Mike worked out real well. It was a real old chip and I got it given to me in a bunch of parts drawers from a fellow
who was in charge of an estate. Sure there was junk I took home..but there were some real nice Gems in the junk drawers and some of
these rare ICs! --They were TTL chips of the mid seventies vintage. (I sold Mike this chip for $5.00 and told him if it worked for him..he
could send me another $5.00 later)..well it worked for him and he is pleased and I am pleased.
The turns counter was a result of me "networking" at the Whitby flea market (April 2008). The fellow was trying to gather some parts to
build an antenna tuner and he asked me if I might have one. I sold it for $8.00 plus the cost to send it to him. Glad he liked it. ---As I
recall..I paid $5.00 for this turns counter when I bought it at a flea market. So my profit was $3.00 (I am a small profit hobby/business).
I have received many components such as ICs, resistors, capacitors, coils and transformers and
crystals from estate sales, yard sales, ham radio flea markets and I've even picked good clean
circuit boards (loaded with ICs) from the land fill site (the board was clean obviously).
I recycle this stuff by picking off the valuable parts (sometimes I have to use my pace de soldering
station).
I ALSO BUY GOOD USED OR BROKEN GEAR AND EITHER FIX UP THE ITEM (AMATEUR RADIO
AND CB IN PARTICULAR) OR I TAKE THE GOOD PARTS OFF THE UNIT FOR RESTORATION OF
RADIOS WHICH NEED PARTS TO BE FIXED.
you can email me at this LINK if you want to sell some stuff you have that is just gathering dust
or call me on the phone as well...705-848-9486 Thanks Earl Andrews
crystals from estate sales, yard sales, ham radio flea markets and I've even picked good clean
circuit boards (loaded with ICs) from the land fill site (the board was clean obviously).
I recycle this stuff by picking off the valuable parts (sometimes I have to use my pace de soldering
station).
I ALSO BUY GOOD USED OR BROKEN GEAR AND EITHER FIX UP THE ITEM (AMATEUR RADIO
AND CB IN PARTICULAR) OR I TAKE THE GOOD PARTS OFF THE UNIT FOR RESTORATION OF
RADIOS WHICH NEED PARTS TO BE FIXED.
you can email me at this LINK if you want to sell some stuff you have that is just gathering dust
or call me on the phone as well...705-848-9486 Thanks Earl Andrews
To: "Earl Andrews" <earlinclayton@yahoo.com>
Subject: RE: turns counter
Date: Thu, 1 May 2008 12:29:30 +0000
hi andrews i got the turns counter its a nice one thanks a lot.
Subject: RE: turns counter
Date: Thu, 1 May 2008 12:29:30 +0000
hi andrews i got the turns counter its a nice one thanks a lot.
| I specialize in small orders of a part or two and I am totally low profit oriented. (I currently make no profit (its a hobby right now) |
| I have some odd ball parts and hard to get parts ie old RTL chips, Zilog microprocessor chips and Motorola chips. Good for old equipment repairs/restorations or museum/school projects ect. |
I HAVE STARTED SELLING ON EBAY!! I did a trial run of 5 pieces of
electronics (mostly older used parts for hobbyists). I have received
very good reviews!!! click here to read my reviews and to see some
very useful tips about ebay shopping and selling!!
electronics (mostly older used parts for hobbyists). I have received
very good reviews!!! click here to read my reviews and to see some
very useful tips about ebay shopping and selling!!