On Mon, 03 May 2004 10:44:14 -0500, John Fields
wrote:

On Mon, 03 May 2004 12:56:07 +0100, Paul Burridge
wrote:

On Sun, 02 May 2004 22:37:28 GMT, (John Crighton)
wrote:

Go on, tell us the model number, there are a lot of us
still interested in boat anchor style test equipment.

Is this unit similar to your sig gen
http://www.thevalvepage.com/testeq/avo/sg3/sg3.htm
http://www.thevalvepage.com/testeq/testeq.htm
Unfotunately the connector has been removed and a
BNC type fitted.

Not really similar to any of them, I'm afraid. Model number is CT
378B. I did recognise that old Advance E2, though. Had one of 'em
about 25 years ago. It was pretty ancient then!

I am guessing that you want to keep the original connector
on the sig gen and find a matching connector to make a
short test lead. Old Style connector to BNC.
My news group service doesn't allow me to see the group
a.b.s.e Pity. So I can not see the picture you posted.

Pity. Hopefully some kind soul will post it onto a web site for you. I
can't as I have no FTP s/ware installed at present.

---
Can't you just email it to him?

Oh yeah. I forgot about that!
Better ask here first though, as it's a binary and might not be
welcome.
I've also taken a shot of the whole gen., John. I can certainly e-mail
the pics to you if you're that interested in boat anchors (although
this one's only 25lbs so hardly qualifies). My Marconi, OTOH, has got
to be 3 times that much at least...

--

The BBC: licenced at public expense to spread lies.

On Mon, 03 May 2004 18:59:30 +0100, Paul Burridge
wrote:


Can't you just email it to him?

Oh yeah. I forgot about that!
Better ask here first though, as it's a binary and might not be
welcome.
I've also taken a shot of the whole gen., John. I can certainly e-mail
the pics to you if you're that interested in boat anchors (although
this one's only 25lbs so hardly qualifies). My Marconi, OTOH, has got
to be 3 times that much at least...

--

The BBC: licenced at public expense to spread lies.

Hello Paul,
Yes, I would be interested to see the pictures of the AVO CT378B
What was the Marconi sig gen model number? I missed it.
No need for pictures of the Marconi unit. I might know it from
the model number.
Regards,
John Crighton
Sydney

On Mon, 03 May 2004 18:59:30 +0100, Paul Burridge
wrote:


Can't you just email it to him?

Oh yeah. I forgot about that!
Better ask here first though, as it's a binary and might not be
welcome.
I've also taken a shot of the whole gen., John. I can certainly e-mail
the pics to you if you're that interested in boat anchors (although
this one's only 25lbs so hardly qualifies). My Marconi, OTOH, has got
to be 3 times that much at least...

--

The BBC: licenced at public expense to spread lies.

Hello Paul,
Yes, I would be interested to see the pictures of the AVO CT378B
What was the Marconi sig gen model number? I missed it.
No need for pictures of the Marconi unit. I might know it from
the model number.
Regards,
John Crighton
Sydney

On Mon, 03 May 2004 22:14:15 GMT, (John Crighton)
wrote:

Hello Paul,
Yes, I would be interested to see the pictures of the AVO CT378B
What was the Marconi sig gen model number? I missed it.
No need for pictures of the Marconi unit. I might know it from
the model number.

Okay, John. The Marconi's a TF 2002AS. I'll post you a pic of the AVO
2morrow as I'm a bit shagged-out right now (bank holiday boozing here
2day).
--

The BBC: licenced at public expense to spread lies.

On Mon, 03 May 2004 22:14:15 GMT, (John Crighton)
wrote:

Hello Paul,
Yes, I would be interested to see the pictures of the AVO CT378B
What was the Marconi sig gen model number? I missed it.
No need for pictures of the Marconi unit. I might know it from
the model number.

Okay, John. The Marconi's a TF 2002AS. I'll post you a pic of the AVO
2morrow as I'm a bit shagged-out right now (bank holiday boozing here
2day).
--

The BBC: licenced at public expense to spread lies.

"Highland Ham" wrote:

The model number ain't gonna mean a lot to anyone as this is a very
old piece of kit (1950s) that I keep mainly out of a sense of
reverence for the past. :-) It's an old ex-RAF AVO. I have posted a
picture of the socket to a.b.s.e under this same thread title...
BTW, there's a 5p coin shown for scale, but since that won't mean much
to anyone outside Britain, the outer of the socket is approx. 1" in
diameter (which won't mean much to anyone in europe but it serves them
right for adopting the metric system.:-))
======================
Since Britain is part of Europe you probably mean 'anyone in continental
europe'

Just for your info ,the metric system was introduced /imposed by Napoleon
(eg more than 200 years ago)
For once he did the right thing .

The metric system also the law here in the UK. You can't sell stuff in
pounds and ounces or feet and inches. Miles are the last bastion of
the imperial system (on road signs), with the informal exception of
pints of beer (IIRC technically it's a "large" beer and 576ml). I
don't mind working in metric units, indeed I prefer them, but if
anyone wants to stop me asking for a pint in the pub they'll have a
fight on their hands!

Oh yes, cannabis is still sold by the fraction of an ounce as it ever
was, but I don't think selling cannabis in imperial units is any more
illegal than just selling cannabis


Tim
--
Love is a travelator.

"Highland Ham" wrote:

The model number ain't gonna mean a lot to anyone as this is a very
old piece of kit (1950s) that I keep mainly out of a sense of
reverence for the past. :-) It's an old ex-RAF AVO. I have posted a
picture of the socket to a.b.s.e under this same thread title...
BTW, there's a 5p coin shown for scale, but since that won't mean much
to anyone outside Britain, the outer of the socket is approx. 1" in
diameter (which won't mean much to anyone in europe but it serves them
right for adopting the metric system.:-))
======================
Since Britain is part of Europe you probably mean 'anyone in continental
europe'

Just for your info ,the metric system was introduced /imposed by Napoleon
(eg more than 200 years ago)
For once he did the right thing .

The metric system also the law here in the UK. You can't sell stuff in
pounds and ounces or feet and inches. Miles are the last bastion of
the imperial system (on road signs), with the informal exception of
pints of beer (IIRC technically it's a "large" beer and 576ml). I
don't mind working in metric units, indeed I prefer them, but if
anyone wants to stop me asking for a pint in the pub they'll have a
fight on their hands!

Oh yes, cannabis is still sold by the fraction of an ounce as it ever
was, but I don't think selling cannabis in imperial units is any more
illegal than just selling cannabis


Tim
--
Love is a travelator.

[...snip...]
For the calibration to be accurate on your generator it sounds like the
scale is calibrated so you need the 6 db pad after it. A 5 db pad will
reduce the power by a factor of 4 or a voltage by a factor of 2.

That last 5 should be a 6.

--
Steve N, K,9;d, c. i My email has no u's.

Thanks, I fat fingered that and hit the 5 instead of the 6.

[...snip...]
For the calibration to be accurate on your generator it sounds like the
scale is calibrated so you need the 6 db pad after it. A 5 db pad will
reduce the power by a factor of 4 or a voltage by a factor of 2.

That last 5 should be a 6.

--
Steve N, K,9;d, c. i My email has no u's.

Thanks, I fat fingered that and hit the 5 instead of the 6.

On Tue, 04 May 2004 00:21:38 +0100, Paul Burridge
wrote:

On Mon, 03 May 2004 22:14:15 GMT, (John Crighton)
wrote:

Hello Paul,
Yes, I would be interested to see the pictures of the AVO CT378B
What was the Marconi sig gen model number? I missed it.
No need for pictures of the Marconi unit. I might know it from
the model number.

Okay, John. The Marconi's a TF 2002AS. I'll post you a pic of the AVO
2morrow as I'm a bit shagged-out right now (bank holiday boozing here
2day).
--

The BBC: licenced at public expense to spread lies.

Yes, I know that unit, I have a 2001
Repairing that unit is not dead easy for hobbyists.

I am assuming that AVO at Dover were useless with your
enquiries regarding information on the AVO CT378B

If you wanted a good back up signal generator,
that is dead easy to repair. Here is one for sale.
Marconi TF 144H 50 ohms output Z. BNC connector.
10KHz to 72MHz
http://cgi.ebay.co.uk/ws/eBayISAPI.d...4746 090&rd=1

I like that model, for a number of reasons.
Very stable frequency wise (when warmed up).
It has that nice smell inside that you get from valve gear. LOL
Everything inside is getatable.
Big knobs and easy to read dials, good for failing eyesight.
When the attenuator gets smoked by accidentally pressing a
microphone push to talk button of a transceiver under repair
on the bench, it is very easy to replace the resistors in the
attenuator.
It was not that heavy that I couldn't hump it up the gangways
of ships, decades ago, to do radio service work but it is way too
heavy for me now. Heh heh heh...

You might like to check out how far away that unit for auction,
is away from you. I wouldn't pay any more than 45 quid.
Even 25 quid is right on the limit for me. But if no one bids
you could get lucky. I bought one here in Australia for $10
at a Ham fest.

I only mentioned the TF144H incase you were looking for a
good cheap sig gen to accompany your TF2002AS do some
serious radio receiver work. Both have good attenuators.
Having two good signal generators would help you out with
all that filter and interference work that has been plaguing you
over recent months. One sig gen as the desired signal, the
second sig-gen as the interfering signal etc.

Regards,
John Crighton
Sydney