Hi RATs!

Put the tube in the circuit you are going to use and listen. If you like it, it
is good. If not, you may change the circuit until you do

The alternative is test stuff you cannot hear. What does that accomplish?

Buy $50. worth of tubes and swap them into the radio and find the best sounding
of the bunch.

eBay is just another yard sale

Happy Ears!
Al


Alan J. Marcy
Phoenix, AZ

PWC/mystic/Earhead

Most Tube Testers are notorious devices. Unfortunately the notoriety is not
good.

Look for older model testers that have the old sockets
that accept 45's, 2A3, etc..

Personally I own an Eico 667 tester and don't always 'trust' what it is
telling me.

Som tubes read 110% and are garbage. Other's like my Svetlana 6650 read 35%
and are absolutely new and flawless.

The best Tube Tester is to have more than one. They are like Doctors, always
look for a second or third opinion before trading 'weak' measuring
Telefunken ECC83's that are actually only 1/2 way to the cleaners!!!

If you really want to test Power Tubes you have to do it at 'real' voltages,
not the wimpy 300 volts or less that the typical 'Mutual Conductance' tube
tester provide.

Look for the TV Military of Hickok 539 series or the Carmatic 123, those are
good testers.

Good luck,

Rich


"JP" wrote in message
nk.net...
Hi,

I working on repairing my first old radio--a Majestic 1A59EB. I would like
to test the tubes in it (41, 75, 80, 6A7, 6D6), but have no tube tester on
my wee bench. The testers I see for sale on Ebay seem to range between
$5-50 (Superior, Eico, etc.), then jump to testers that sell for over
$300-1000 (Hickok, military models, etc.).

So I was curious what models I could pick up for a reasonable price (under
$50 or so) that would test the tubes I need to test, have a decent range
of
tube types that it can handle for my future projects, and not...to be
blunt, be a worthless heap of garbage from day one.

Any advice would be much appreciated--including better sources to buy tube
testers than Ebay.

Thanks much,

Jason

JP wrote:
Hi,

I working on repairing my first old radio--a Majestic 1A59EB. I would like
to test the tubes in it (41, 75, 80, 6A7, 6D6), but have no tube tester on
my wee bench. The testers I see for sale on Ebay seem to range between
$5-50 (Superior, Eico, etc.), then jump to testers that sell for over
$300-1000 (Hickok, military models, etc.).

So I was curious what models I could pick up for a reasonable price (under
$50 or so) that would test the tubes I need to test, have a decent range of
tube types that it can handle for my future projects, and not...to be
blunt, be a worthless heap of garbage from day one.

Any advice would be much appreciated--including better sources to buy tube
testers than Ebay.

Thanks much,

Jason

Avoid simple "emission testers," and opt for transconductance (aka
"mutual conductance") testers. I really like my B&K Model 747B, largely
because of its compact size. (Like you, I have a very "wee" bench.)

Cheers,
Fred
--
+--------------------------------------------+
| Music: http://www3.telus.net/dogstarmusic/ |
| Projects, Vacuum Tubes & other stuff: |
| http://www.dogstar.dantimax.dk |
+--------------------------------------------+

JP wrote in message ink.net...
Hi,

I working on repairing my first old radio--a Majestic 1A59EB. I would like
to test the tubes in it (41, 75, 80, 6A7, 6D6), but have no tube tester on
my wee bench. The testers I see for sale on Ebay seem to range between
$5-50 (Superior, Eico, etc.), then jump to testers that sell for over
$300-1000 (Hickok, military models, etc.).

So I was curious what models I could pick up for a reasonable price (under
$50 or so) that would test the tubes I need to test, have a decent range of
tube types that it can handle for my future projects, and not...to be
blunt, be a worthless heap of garbage from day one.

Any advice would be much appreciated--including better sources to buy tube
testers than Ebay.

Thanks much,

Jason

EICO 666

I'd second the Eico 666. It's relatively cheap, and very reliable.
Most tube settings are accurate. I've been using one for four years
now, and have gotten used to it. There are a a few updated charts, so
if you run across a tube with low readings and it doesn't seem right,
it may be the settings. Known NOS will really tell. Most settings
are right, and good tubes usually read from 100 to 120 %.
For reading really high transconductance tubes, however, take the
readings with a grain of salt. They sometimes read lower than they
really are.
I had a problem reading 12gn7's, and found that my Heathkit TT1 read
them correctly.
The 666 will read normal power tubes correctly, like 6550, 6l6, EL34,
etc, if properly calibrated.

Bob Hedberg


(Jiri Placek) wrote:

JP wrote in message ink.net...
Hi,

I working on repairing my first old radio--a Majestic 1A59EB. I would like
to test the tubes in it (41, 75, 80, 6A7, 6D6), but have no tube tester on
my wee bench. The testers I see for sale on Ebay seem to range between
$5-50 (Superior, Eico, etc.), then jump to testers that sell for over
$300-1000 (Hickok, military models, etc.).

So I was curious what models I could pick up for a reasonable price (under
$50 or so) that would test the tubes I need to test, have a decent range of
tube types that it can handle for my future projects, and not...to be
blunt, be a worthless heap of garbage from day one.

Any advice would be much appreciated--including better sources to buy tube
testers than Ebay.

Thanks much,

Jason

EICO 666

Bob H.

Just grab that plate in one hand, the chassis in the other,
and FEEL the power of tube audio!!!
(not literally, of course, just kidding. DON'T DO THAT!)

The Hickok 533A or 600A, the Heathkit TT-1, the TV-7A/U and the Sencore
MU150 are the lowest cost of the serious tube testers, with the TT-1 or
TV-7A/U being the picks of that group.

All are around $200, + a good calibration will run you $75 - $125

There is no good $50 tube tester. It is like saying I want to buy a serious
computer for $100

But your $300 investment will serve you well, and the great thing is, should
you decide to sell it, you should make money, as you will likely get over
$300 for a calibrated example of any of the above testers.

cowboy



You really want to
"JP" wrote in message
nk.net...
Hi,

I working on repairing my first old radio--a Majestic 1A59EB. I would like
to test the tubes in it (41, 75, 80, 6A7, 6D6), but have no tube tester on
my wee bench. The testers I see for sale on Ebay seem to range between
$5-50 (Superior, Eico, etc.), then jump to testers that sell for over
$300-1000 (Hickok, military models, etc.).

So I was curious what models I could pick up for a reasonable price (under
$50 or so) that would test the tubes I need to test, have a decent range
of
tube types that it can handle for my future projects, and not...to be
blunt, be a worthless heap of garbage from day one.

Any advice would be much appreciated--including better sources to buy tube
testers than Ebay.

Thanks much,

Jason

All depends on where you look, if it's Ebay then that's right. I have a
KS-15874-L2 Cardmatic with a full set of cards that I got for less than $50.
My I-177 was $40 , Eico 666 for $25, Hickok 800A was $80 and Hickok 540 was
$25. Still like the old 177 for the radio tubes, fast and reliable. Lot of
the stuff I found advertising on a small local AM station "Swap Shop".
"proletariat" wrote in message
...
The Hickok 533A or 600A, the Heathkit TT-1, the TV-7A/U and the Sencore
MU150 are the lowest cost of the serious tube testers, with the TT-1 or
TV-7A/U being the picks of that group.

All are around $200, + a good calibration will run you $75 - $125

There is no good $50 tube tester. It is like saying I want to buy a
serious
computer for $100

But your $300 investment will serve you well, and the great thing is,
should
you decide to sell it, you should make money, as you will likely get over
$300 for a calibrated example of any of the above testers.

cowboy



You really want to
"JP" wrote in message
nk.net...
Hi,

I working on repairing my first old radio--a Majestic 1A59EB. I would
like
to test the tubes in it (41, 75, 80, 6A7, 6D6), but have no tube tester
on
my wee bench. The testers I see for sale on Ebay seem to range between
$5-50 (Superior, Eico, etc.), then jump to testers that sell for over
$300-1000 (Hickok, military models, etc.).

So I was curious what models I could pick up for a reasonable price
(under
$50 or so) that would test the tubes I need to test, have a decent range
of
tube types that it can handle for my future projects, and not...to be
blunt, be a worthless heap of garbage from day one.

Any advice would be much appreciated--including better sources to buy
tube
testers than Ebay.

Thanks much,

Jason

On Fri, 01 Aug 2003 22:58:34 +0000, Lou D wrote:

If you are going to be working on pre WWII radios then I would recommend the
I-177 military tester of Hickok design made by various manufactures. It is
well made and easy to use. They can be had at the $50 to $100 range.

If he's doing mostly stuff from WW2 & prior I would second that.
I-177 can't test later stuff like 12AX7's, so they go for less than
other testers.
I'm partial to B&Ks but AFAIK, few B&Ks have sockets for antique
tubes like 80's, etc.



--
Ned Carlson Triode Electronics
25633 W Irving Park Rd Chicago, IL, 60634 USA
ph 773-871-7459 fax 773-871-7938
11AM to 7 PM CT, (1700-0100 UTC)
http://www.triodeelectronics.com/

The I-177 does 12AX7, etc. just fine. You have to get the adapter
box that is part of the set. It would be very easy to make one on
your own. The set cables into the "N" octal tube socket, and has
a group of 5 cables with bananna plugs, and 9, or 10 bananna sockets
that connect to the corresponding pin on the adapter sockets.

The latest charts have all of the simpler miniature tubes. When I
had mine, I had a book dated 1965, or so. I would bet that
Nolands Redneck Boatanchor site would have that book online.

-Chuck

Ned Carlson wrote:
On Fri, 01 Aug 2003 22:58:34 +0000, Lou D wrote:


If you are going to be working on pre WWII radios then I would recommend the
I-177 military tester of Hickok design made by various manufactures. It is
well made and easy to use. They can be had at the $50 to $100 range.


If he's doing mostly stuff from WW2 & prior I would second that.
I-177 can't test later stuff like 12AX7's, so they go for less than
other testers.
I'm partial to B&Ks but AFAIK, few B&Ks have sockets for antique
tubes like 80's, etc.