I will drive South of I-10 any time I feel like it.I am going to visit
the D-Day Museum www.ddaymuseum.com in New Orleans next month.I have
a cousin who lives in Gretna,(do you even know where Gretna is? I doubt
it) Louisiana.What do YOU think YOU can do about that? YOU MORON!
cuhulin

Les the Loser.The U.S.Air Force is having a convention in Biloxi this
month.My next oldest sister and her hubby (he retired out of the U.S.Air
Force) are going to be there,South of I-10.Why don't YOU TRY to
something about that,YOU MORON! I might get to Biloxi too.I have
probally been South of I-10 more times than years you have been
around.In a straight line,I-10 is about 110 miles South of me,not much
over an hour and a half drive.
cuhulin

In article ,
"Michael A. Terrell" wrote:

Snip

If you want to add gain before or after the splitter a tuned preamp
is a better choice than a wideband amp if there is any strong RF in your
area.

Snip

A tuned pre-amp is better even if there is no strong RF in the area. The
more narrow the BW the lower the possible noise floor can be depending
on design of course.

The draw back of course is that you have to tune it.

--
Telamon
Ventura, California

Telamon wrote:


The draw back of course is that you have to tune it.


The advantage is a lower noise floor.

--
Former professional electron wrangler.

Michael A. Terrell
Central Florida

In article ,
"Michael A. Terrell" wrote:

Telamon wrote:


The draw back of course is that you have to tune it.


The advantage is a lower noise floor.

Yeah, that's what I said.

The more narrow the BW the lower the possible noise floor can be
depending on design of course.

--
Telamon
Ventura, California

Telamon wrote:

Must be nice to have the circuits you work on in a controlled RF
environment inside a metal box. My employer expects the same on open
circuit boards up to 10 GHz and since it's work it's no fun.

--
Telamon
Ventura, California

I did 11 Ghz work on CARS equipment It was used for a TV STL, but it
was grandfathered. I have worked from DC to 11 Ghz but most of that is
behind me because of my health.

I did a lot of RF work at the board level at Microdyne, before they
were installed in the machined aluminum modules. We built telemetry
receivers, any band, any bandwidth, any modulation scheme. Have you
worked with FQPSK modulation?

Everyone told me that the 4 GHz equipment couldn't be repaired
outside the factory and there were no schematics or service data. I
built my first 4 GHZ signal generator out of an old Drake C-band to 70
Mhz down converter. I removed the filtering on the tuning voltage and
used a better Op amp to drive the varactor, then fed the video to the op
amp. My quick test was to wave the feed past a fluorescent tube and
watch the change in the noise on a video monitor.

The C-band generator I have now was custom built by Microdyne for
their production lines when they were in the Sat TV business. I think I
have the only one left. The others were destroyed when they shut the
line down, but they missed one and another guy at the plant grabbed it
off the top of the dumpster.

As far as work being no fun, I always took the hardest jobs coming
down the production line and found ways to make them easier to do. I
might be strange, but I liked the challenges. I have several hundred
semiconductor databooks in my collection, and thousands of of datasheets
filling up a new 80 GB hard drive.

--
Former professional electron wrangler.

Michael A. Terrell
Central Florida

wrote:
I will drive South of I-10 any time I feel like it.I am going to visit
the D-Day Museum www.ddaymuseum.com in New Orleans next month.I have
a cousin who lives in Gretna,(do you even know where Gretna is? I doubt
it) Louisiana.What do YOU think YOU can do about that? YOU MORON!
cuhulin


Be sure and tell us your impression of the museum, would love to get a
chance to visit there myself.

In article ,
"Michael A. Terrell" wrote:

Telamon wrote:

Must be nice to have the circuits you work on in a controlled RF
environment inside a metal box. My employer expects the same on open
circuit boards up to 10 GHz and since it's work it's no fun.

--
Telamon
Ventura, California

I did 11 Ghz work on CARS equipment It was used for a TV STL, but it
was grandfathered. I have worked from DC to 11 Ghz but most of that is
behind me because of my health.

I did a lot of RF work at the board level at Microdyne, before they
were installed in the machined aluminum modules. We built telemetry
receivers, any band, any bandwidth, any modulation scheme. Have you
worked with FQPSK modulation?

Everyone told me that the 4 GHz equipment couldn't be repaired
outside the factory and there were no schematics or service data. I
built my first 4 GHZ signal generator out of an old Drake C-band to 70
Mhz down converter. I removed the filtering on the tuning voltage and
used a better Op amp to drive the varactor, then fed the video to the op
amp. My quick test was to wave the feed past a fluorescent tube and
watch the change in the noise on a video monitor.

The C-band generator I have now was custom built by Microdyne for
their production lines when they were in the Sat TV business. I think I
have the only one left. The others were destroyed when they shut the
line down, but they missed one and another guy at the plant grabbed it
off the top of the dumpster.

As far as work being no fun, I always took the hardest jobs coming
down the production line and found ways to make them easier to do. I
might be strange, but I liked the challenges. I have several hundred
semiconductor databooks in my collection, and thousands of of datasheets
filling up a new 80 GB hard drive.

No I have not worked with FQPSK modulation. My work involves digital
signals mostly. I consider the environment to be mixed signal as a best
description. Telecommunications and data communications semiconductors
from low line rate to 10 G/bit is what I work on in the production test
area. All these signals need to transverse circuit boards and various
connectors and cables. Rise and fall times as fast as 18 ps and clocks
up to around 12.5 GHz. It real fun trying to measure rise and fall times
that fast and jitter on the edges and all the data eye measurements that
come into play. I design the circuit boards and specify everything else.

--
Telamon
Ventura, California

www.ddaymuseum.org in New Orleans in the one I was talking about.I
would like to visit the other Museum www.ddaymuseum.com in
Natick,but that is too long a trip for me to make.
cuhulin

Telamon wrote:

No I have not worked with FQPSK modulation. My work involves digital
signals mostly. I consider the environment to be mixed signal as a best
description. Telecommunications and data communications semiconductors
from low line rate to 10 G/bit is what I work on in the production test
area. All these signals need to transverse circuit boards and various
connectors and cables. Rise and fall times as fast as 18 ps and clocks
up to around 12.5 GHz. It real fun trying to measure rise and fall times
that fast and jitter on the edges and all the data eye measurements that
come into play. I design the circuit boards and specify everything else.


I worked in engineering and on the production floor when the RCB2000
was released to production. Most of the radio was on VME cards but
there were about a dozen other small boards not counting the ones in the
RF sections. About a dozen processor chips including the Aaeon PC-104
embedded controller and the PC-104 IEEE-488-2 interface board.

I know what you mean about measuring signals in that range.
Unfortunatly, some of the other techs were good at RF but couldn't
handle digital so I got stuck with troubleshooting $8,000 mixed signal
circuit boards that no one else could fix. I had to fight with our MEs
to change the paste solder because of flow problems in the oven and to
switch to Ersin solder for rework. Have you ever used .015" solder
while working under a stereo microscope? It takes steady hands.


--
Former professional electron wrangler.

Michael A. Terrell
Central Florida