Modulation on scope question
 

On Sun, 10 Jun 2007 19:04:01 -0400, "Leland C. Scott"
wrote:

+++
+++"james" wrote in message
m...
+++ I have been very happy with the unit I have. The front keypad is still
+++ in very excellent shape as the unit I have was on the factory floor
+++ and control of it was via the GPIB connection from an HP workstation.
+++
+++Well that's good. I'm a bit leery of spending big bucks on used test gear
+++since you don't know what the last guy did to it abuse wise, something
+++stupid like keying up the xmit with the signal generator still attached. I
+++found that if the equipment looks good cosmetically there is a good chance
+++the guy selling it didn't abuse the equipment, much.
+++
+++I would like to get a nice spectrum analyzer but anything worth having is in
+++the $2K range, a bit too much to take a chance on it from a total stranger.
+++I could spent $6K on a nice new portable LCD one. 8-))
*****************

If you want a Spectrum Analyzer just to monitor your transmitter
signals and not do design work with there are a couple of nice
circuits on teh net that can be put together for under $200. Maybe
under $100.

The one by the Green Bay Professional Packet Radio group is a nice one
for signal monitoring. It is based on the W7ZOI and K7TAU circuits and
is a better one as it will work up to 1Gig. Granted these are not as
good as commercial built test equiptment but for monitoring emmisions
compliance it is better than nothing. I think the circuit would be
neat to interface it to a quarter VGA color LCD panel.

james

Modulation on scope question
 

James;

I'll have to look at the one by Green Bay Professional Packet Radio group,
didn't know about it. I would like to do some experimenting around on the
microwave bands just for the heck of it. I've been slowly gathering up
equipment to use.

--
Regards,
Leland C. Scott
KC8LDO

"james" wrote in message
...
On Sun, 10 Jun 2007 19:04:01 -0400, "Leland C. Scott"
wrote:

+++
+++"james" wrote in message
om...
+++ I have been very happy with the unit I have. The front keypad is
still
+++ in very excellent shape as the unit I have was on the factory floor
+++ and control of it was via the GPIB connection from an HP workstation.
+++
+++Well that's good. I'm a bit leery of spending big bucks on used test
gear
+++since you don't know what the last guy did to it abuse wise, something
+++stupid like keying up the xmit with the signal generator still
attached. I
+++found that if the equipment looks good cosmetically there is a good
chance
+++the guy selling it didn't abuse the equipment, much.
+++
+++I would like to get a nice spectrum analyzer but anything worth having
is in
+++the $2K range, a bit too much to take a chance on it from a total
stranger.
+++I could spent $6K on a nice new portable LCD one. 8-))
*****************

If you want a Spectrum Analyzer just to monitor your transmitter
signals and not do design work with there are a couple of nice
circuits on teh net that can be put together for under $200. Maybe
under $100.

The one by the Green Bay Professional Packet Radio group is a nice one
for signal monitoring. It is based on the W7ZOI and K7TAU circuits and
is a better one as it will work up to 1Gig. Granted these are not as
good as commercial built test equiptment but for monitoring emmisions
compliance it is better than nothing. I think the circuit would be
neat to interface it to a quarter VGA color LCD panel.

james

Modulation on scope question
 

On Tue, 12 Jun 2007 01:05:49 -0400, "Leland C. Scott" wrote:

James;

I'll have to look at the one by Green Bay Professional Packet Radio group,
didn't know about it. I would like to do some experimenting around on the
microwave bands just for the heck of it. I've been slowly gathering up
equipment to use.


Looks like these guys had lots of VCRs !

Vinnie S.

Modulation on scope question
 

On Tue, 12 Jun 2007 09:20:24 -0400, Vinnie S.
wrote:

+++On Tue, 12 Jun 2007 01:05:49 -0400, "Leland C. Scott" wrote:
+++
+++James;
+++
+++I'll have to look at the one by Green Bay Professional Packet Radio group,
+++didn't know about it. I would like to do some experimenting around on the
+++microwave bands just for the heck of it. I've been slowly gathering up
+++equipment to use.
+++
+++
+++Looks like these guys had lots of VCRs !
+++
+++Vinnie S.
************

You can find old VCRs now for under $10 bucks that are loaded with
usable parts. Some if you buy brand new would cost three and four
times that.

james