K

k6rtm@comcast.net

Sun, Sep 19, 2010 1:17 AM

Not completely OT, as stable and accurate timebases are very useful in microwave systems...

What's the proper hardware to use for connecting WR-90 (10GHz) waveguide sections? I figure 8-32 brass or stainless, avoiding anything magnetic.

Bob K6RTM in Silicon Valley

Not completely OT, as stable and accurate timebases are very useful in microwave systems... What's the proper hardware to use for connecting WR-90 (10GHz) waveguide sections? I figure 8-32 brass or stainless, avoiding anything magnetic. Bob K6RTM in Silicon Valley

MF

Mike Feher

Sun, Sep 19, 2010 2:26 AM

The field is contained entirely within the guide, so, you can use any type
of fastener on the flanges. Typically, however, brass or stainless is the
most common. It is OK to use ferrous screws/nuts, but they can become
magnetized if close to an isolator. If using one of those, then care should
be taken regardless, not because of the effects on the performance but the
possibility of getting iron shavings into the guide. 73 - Mike

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of k6rtm@comcast.net
Sent: Saturday, September 18, 2010 9:17 PM
To: time-nuts@febo.com
Subject: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections?

Not completely OT, as stable and accurate timebases are very useful in
microwave systems...

What's the proper hardware to use for connecting WR-90 (10GHz) waveguide
sections? I figure 8-32 brass or stainless, avoiding anything magnetic.

Bob K6RTM in Silicon Valley

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

The field is contained entirely within the guide, so, you can use any type of fastener on the flanges. Typically, however, brass or stainless is the most common. It is OK to use ferrous screws/nuts, but they can become magnetized if close to an isolator. If using one of those, then care should be taken regardless, not because of the effects on the performance but the possibility of getting iron shavings into the guide. 73 - Mike Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of k6rtm@comcast.net Sent: Saturday, September 18, 2010 9:17 PM To: time-nuts@febo.com Subject: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections? Not completely OT, as stable and accurate timebases are very useful in microwave systems... What's the proper hardware to use for connecting WR-90 (10GHz) waveguide sections? I figure 8-32 brass or stainless, avoiding anything magnetic. Bob K6RTM in Silicon Valley _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

J

jimlux

Sun, Sep 19, 2010 3:13 AM

k6rtm@comcast.net wrote:

Not completely OT, as stable and accurate timebases are very useful in microwave systems...

What's the proper hardware to use for connecting WR-90 (10GHz) waveguide sections? I figure 8-32 brass or stainless, avoiding anything magnetic.

whatever fits through the holes in the flanges.

#8 requires a 0.187 hole, #6 requires a 0.156, #4 is 0.125, #2 is 0.109

One reference I have says WR90 has 0.169" holes, so that's #6 hardware.

Whether it is magnetic or not doesn't make any difference.

k6rtm@comcast.net wrote: > Not completely OT, as stable and accurate timebases are very useful in microwave systems... > > What's the proper hardware to use for connecting WR-90 (10GHz) waveguide sections? I figure 8-32 brass or stainless, avoiding anything magnetic. > > whatever fits through the holes in the flanges. #8 requires a 0.187 hole, #6 requires a 0.156, #4 is 0.125, #2 is 0.109 One reference I have says WR90 has 0.169" holes, so that's #6 hardware. Whether it is magnetic or not doesn't make any difference.

RA

Robert Atkinson

Sun, Sep 19, 2010 10:15 AM

Hi,
Not strictly true. Material is not important apart from environmental (corrosion) issues, but that is not the only concern. WG-16 (British) / WR 90 flanges are not dowelled. They rely on the fastners for alignment. The correct fastners are 5/32" shoulder screws (0.1557" dia 6-32 thread). The precsion shoulder locates the flanges. 5/32" bolts (a bolt has a plain shank) are a good second choice but you will probably have to pack them with washers as the grip length won't match ;-) If you have to use screws, at least align two diagonal holes with 5/32" dowels while nipping up the first two screws.

Robert G8RPI.

--- On Sun, 19/9/10, jimlux jimlux@earthlink.net wrote:

From: jimlux jimlux@earthlink.net
Subject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections?
To: "Discussion of precise time and frequency measurement" time-nuts@febo.com
Date: Sunday, 19 September, 2010, 4:13

k6rtm@comcast.net wrote:

Not completely OT, as stable and accurate timebases are very useful in microwave systems...
What's the proper hardware to use for connecting WR-90 (10GHz) waveguide sections? I figure 8-32 brass or stainless, avoiding anything magnetic.

whatever fits through the holes in the flanges.

#8 requires a 0.187 hole, #6 requires a 0.156, #4 is 0.125, #2 is 0.109

One reference I have says WR90 has 0.169" holes, so that's #6 hardware.

Whether it is magnetic or not doesn't make any difference.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Hi, Not strictly true. Material is not important apart from environmental (corrosion) issues, but that is not the only concern. WG-16 (British) / WR 90 flanges are not dowelled. They rely on the fastners for alignment. The correct fastners are 5/32" shoulder screws (0.1557" dia 6-32 thread). The precsion shoulder locates the flanges. 5/32" bolts (a bolt has a plain shank) are a good second choice but you will probably have to pack them with washers as the grip length won't match ;-) If you have to use screws, at least align two diagonal holes with 5/32" dowels while nipping up the first two screws. Robert G8RPI. --- On Sun, 19/9/10, jimlux <jimlux@earthlink.net> wrote: From: jimlux <jimlux@earthlink.net> Subject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections? To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Date: Sunday, 19 September, 2010, 4:13 k6rtm@comcast.net wrote: > Not completely OT, as stable and accurate timebases are very useful in microwave systems... > What's the proper hardware to use for connecting WR-90 (10GHz) waveguide sections? I figure 8-32 brass or stainless, avoiding anything magnetic. > whatever fits through the holes in the flanges. #8 requires a 0.187 hole, #6 requires a 0.156, #4 is 0.125, #2 is 0.109 One reference I have says WR90 has 0.169" holes, so that's #6 hardware. Whether it is magnetic or not doesn't make any difference. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

JF

J. Forster

Sun, Sep 19, 2010 10:50 AM

The shoulder screw is an interesting idea, but I've seen (and taken apart)
lots and lots of waveguide over the decades, including brand new stuff
from major manufacturers and mil contractors. I've never seen a shoulder
screw used.

FWIW,

-John

=================

Hi,
Not strictly true. Material is not important apart from environmental
(corrosion) issues, but that is not the only concern. WG-16 (British) / WR
90 flanges are not dowelled. They rely on the fastners for alignment. The
correct fastners are 5/32" shoulder screws (0.1557" dia 6-32 thread). The
precsion shoulder locates the flanges. 5/32" bolts (a bolt has a plain
shank) are a good second choice but you will probably have to pack them
with washers as the grip length won't match ;-) If you have to use screws,
at least align two diagonal holes with 5/32" dowels while nipping up the
first two screws.

Robert G8RPI.

--- On Sun, 19/9/10, jimlux jimlux@earthlink.net wrote:

From: jimlux jimlux@earthlink.net
Subject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections?
To: "Discussion of precise time and frequency measurement"
time-nuts@febo.com
Date: Sunday, 19 September, 2010, 4:13

k6rtm@comcast.net wrote:

Not completely OT, as stable and accurate timebases are very useful in
microwave systems...
What's the proper hardware to use for connecting WR-90 (10GHz) waveguide
sections? I figure 8-32 brass or stainless, avoiding anything magnetic.

whatever fits through the holes in the flanges.

#8 requires a 0.187 hole, #6 requires a 0.156, #4 is 0.125, #2 is 0.109

One reference I have says WR90 has 0.169" holes, so that's #6 hardware.

Whether it is magnetic or not doesn't make any difference.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

The shoulder screw is an interesting idea, but I've seen (and taken apart) lots and lots of waveguide over the decades, including brand new stuff from major manufacturers and mil contractors. I've never seen a shoulder screw used. FWIW, -John ================= > Hi, > Not strictly true. Material is not important apart from environmental > (corrosion) issues, but that is not the only concern. WG-16 (British) / WR > 90 flanges are not dowelled. They rely on the fastners for alignment. The > correct fastners are 5/32" shoulder screws (0.1557" dia 6-32 thread). The > precsion shoulder locates the flanges. 5/32" bolts (a bolt has a plain > shank) are a good second choice but you will probably have to pack them > with washers as the grip length won't match ;-) If you have to use screws, > at least align two diagonal holes with 5/32" dowels while nipping up the > first two screws. > > Robert G8RPI. > > > --- On Sun, 19/9/10, jimlux <jimlux@earthlink.net> wrote: > > > From: jimlux <jimlux@earthlink.net> > Subject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections? > To: "Discussion of precise time and frequency measurement" > <time-nuts@febo.com> > Date: Sunday, 19 September, 2010, 4:13 > > > k6rtm@comcast.net wrote: >> Not completely OT, as stable and accurate timebases are very useful in >> microwave systems... >> What's the proper hardware to use for connecting WR-90 (10GHz) waveguide >> sections? I figure 8-32 brass or stainless, avoiding anything magnetic. >> > > whatever fits through the holes in the flanges. > > #8 requires a 0.187 hole, #6 requires a 0.156, #4 is 0.125, #2 is 0.109 > > One reference I have says WR90 has 0.169" holes, so that's #6 hardware. > > Whether it is magnetic or not doesn't make any difference. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > >

S

shalimr9@gmail.com

Sun, Sep 19, 2010 12:49 PM

Robert is obviously correct, however you would be very hard pressed to be able to measure the difference between shoulder screws and regular screws in practice, either through insertion loss, VSWR or power handling.

So much so that I have never seen shoulder screws used on rectangular waveguide, even on very high power and very low noise equipment. Double ridge waveguide is a different story.

I have seen occasional waveguide arcs on very high power equipment starting at the junction between components or sections of waveguide, but not sufficiently or often enough or consistently enough to be able to pin it to the use of regular screws.

Maybe I have been doing it wrong all along :)
Thanks for the reminder!!!

Didier KO4BB

Sent from my Verizon Wireless BlackBerry

-----Original Message-----
From: "J. Forster" jfor@quik.com
Sender: time-nuts-bounces@febo.com
Date: Sun, 19 Sep 2010 03:50:07
To: Discussion of precise time and frequency measurementtime-nuts@febo.com
Reply-To: jfor@quik.com, Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections?

The shoulder screw is an interesting idea, but I've seen (and taken apart)
lots and lots of waveguide over the decades, including brand new stuff
from major manufacturers and mil contractors. I've never seen a shoulder
screw used.

FWIW,

-John

=================

Hi,
Not strictly true. Material is not important apart from environmental
(corrosion) issues, but that is not the only concern. WG-16 (British) / WR
90 flanges are not dowelled. They rely on the fastners for alignment. The
correct fastners are 5/32" shoulder screws (0.1557" dia 6-32 thread). The
precsion shoulder locates the flanges. 5/32" bolts (a bolt has a plain
shank) are a good second choice but you will probably have to pack them
with washers as the grip length won't match ;-) If you have to use screws,
at least align two diagonal holes with 5/32" dowels while nipping up the
first two screws.

Robert G8RPI.

--- On Sun, 19/9/10, jimlux jimlux@earthlink.net wrote:

From: jimlux jimlux@earthlink.net
Subject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections?
To: "Discussion of precise time and frequency measurement"
time-nuts@febo.com
Date: Sunday, 19 September, 2010, 4:13

k6rtm@comcast.net wrote:

Not completely OT, as stable and accurate timebases are very useful in
microwave systems...
What's the proper hardware to use for connecting WR-90 (10GHz) waveguide
sections? I figure 8-32 brass or stainless, avoiding anything magnetic.

whatever fits through the holes in the flanges.

#8 requires a 0.187 hole, #6 requires a 0.156, #4 is 0.125, #2 is 0.109

One reference I have says WR90 has 0.169" holes, so that's #6 hardware.

Whether it is magnetic or not doesn't make any difference.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Robert is obviously correct, however you would be very hard pressed to be able to measure the difference between shoulder screws and regular screws in practice, either through insertion loss, VSWR or power handling. So much so that I have never seen shoulder screws used on rectangular waveguide, even on very high power and very low noise equipment. Double ridge waveguide is a different story. I have seen occasional waveguide arcs on very high power equipment starting at the junction between components or sections of waveguide, but not sufficiently or often enough or consistently enough to be able to pin it to the use of regular screws. Maybe I have been doing it wrong all along :) Thanks for the reminder!!! Didier KO4BB Sent from my Verizon Wireless BlackBerry -----Original Message----- From: "J. Forster" <jfor@quik.com> Sender: time-nuts-bounces@febo.com Date: Sun, 19 Sep 2010 03:50:07 To: Discussion of precise time and frequency measurement<time-nuts@febo.com> Reply-To: jfor@quik.com, Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections? The shoulder screw is an interesting idea, but I've seen (and taken apart) lots and lots of waveguide over the decades, including brand new stuff from major manufacturers and mil contractors. I've never seen a shoulder screw used. FWIW, -John ================= > Hi, > Not strictly true. Material is not important apart from environmental > (corrosion) issues, but that is not the only concern. WG-16 (British) / WR > 90 flanges are not dowelled. They rely on the fastners for alignment. The > correct fastners are 5/32" shoulder screws (0.1557" dia 6-32 thread). The > precsion shoulder locates the flanges. 5/32" bolts (a bolt has a plain > shank) are a good second choice but you will probably have to pack them > with washers as the grip length won't match ;-) If you have to use screws, > at least align two diagonal holes with 5/32" dowels while nipping up the > first two screws. > > Robert G8RPI. > > > --- On Sun, 19/9/10, jimlux <jimlux@earthlink.net> wrote: > > > From: jimlux <jimlux@earthlink.net> > Subject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections? > To: "Discussion of precise time and frequency measurement" > <time-nuts@febo.com> > Date: Sunday, 19 September, 2010, 4:13 > > > k6rtm@comcast.net wrote: >> Not completely OT, as stable and accurate timebases are very useful in >> microwave systems... >> What's the proper hardware to use for connecting WR-90 (10GHz) waveguide >> sections? I figure 8-32 brass or stainless, avoiding anything magnetic. >> > > whatever fits through the holes in the flanges. > > #8 requires a 0.187 hole, #6 requires a 0.156, #4 is 0.125, #2 is 0.109 > > One reference I have says WR90 has 0.169" holes, so that's #6 hardware. > > Whether it is magnetic or not doesn't make any difference. > >_______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > > >_______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

E

ernieperes@aol.com

Sun, Sep 19, 2010 1:34 PM

Hi,
In many military Russian locator and other eqmnt, also from the east block microwave units/chain used the shoulder screw to have perfect alignment between wave guides...
I was the same with the Czech Republic radars too.....
I have been operated many above mentioned units.........
Rgds Ernie.

-----Original Message-----
From: shalimr9@gmail.com
To: Time-Nuts time-nuts@febo.com
Sent: Sun, Sep 19, 2010 2:49 pm
Subject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections?

Robert is obviously correct, however you would be very hard pressed to be able
o measure the difference between shoulder screws and regular screws in
ractice, either through insertion loss, VSWR or power handling.
So much so that I have never seen shoulder screws used on rectangular waveguide,
ven on very high power and very low noise equipment. Double ridge waveguide is
different story.
I have seen occasional waveguide arcs on very high power equipment starting at
he junction between components or sections of waveguide, but not sufficiently
r often enough or consistently enough to be able to pin it to the use of
egular screws.
Maybe I have been doing it wrong all along :)
hanks for the reminder!!!
Didier KO4BB
Sent from my Verizon Wireless BlackBerry
-----Original Message-----
rom: "J. Forster" jfor@quik.com
ender: time-nuts-bounces@febo.com
ate: Sun, 19 Sep 2010 03:50:07
o: Discussion of precise time and frequency measurementtime-nuts@febo.com
eply-To: jfor@quik.com, Discussion of precise time and frequency measurement
time-nuts@febo.com
ubject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections?
The shoulder screw is an interesting idea, but I've seen (and taken apart)
ots and lots of waveguide over the decades, including brand new stuff
rom major manufacturers and mil contractors. I've never seen a shoulder
crew used.
FWIW,
-John

Hi,

Not strictly true. Material is not important apart from environmental
(corrosion) issues, but that is not the only concern. WG-16 (British) / WR
90 flanges are not dowelled. They rely on the fastners for alignment. The
correct fastners are 5/32" shoulder screws (0.1557" dia 6-32 thread). The
precsion shoulder locates the flanges. 5/32" bolts (a bolt has a plain
shank) are a good second choice but you will probably have to pack them
with washers as the grip length won't match ;-) If you have to use screws,
at least align two diagonal holes with 5/32" dowels while nipping up the
first two screws.

Robert G8RPI.

--- On Sun, 19/9/10, jimlux jimlux@earthlink.net wrote:

From: jimlux jimlux@earthlink.net
Subject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections?
To: "Discussion of precise time and frequency measurement"
time-nuts@febo.com
Date: Sunday, 19 September, 2010, 4:13

k6rtm@comcast.net wrote:

Not completely OT, as stable and accurate timebases are very useful in
microwave systems...
What's the proper hardware to use for connecting WR-90 (10GHz) waveguide
sections? I figure 8-32 brass or stainless, avoiding anything magnetic.

whatever fits through the holes in the flanges.

#8 requires a 0.187 hole, #6 requires a 0.156, #4 is 0.125, #2 is 0.109

One reference I have says WR90 has 0.169" holes, so that's #6 hardware.

Whether it is magnetic or not doesn't make any difference.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

ime-nuts mailing list -- time-nuts@febo.com
o unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
nd follow the instructions there.

Hi, In many military Russian locator and other eqmnt, also from the east block microwave units/chain used the shoulder screw to have perfect alignment between wave guides... I was the same with the Czech Republic radars too..... I have been operated many above mentioned units......... Rgds Ernie. -----Original Message----- From: shalimr9@gmail.com To: Time-Nuts <time-nuts@febo.com> Sent: Sun, Sep 19, 2010 2:49 pm Subject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections? Robert is obviously correct, however you would be very hard pressed to be able o measure the difference between shoulder screws and regular screws in ractice, either through insertion loss, VSWR or power handling. So much so that I have never seen shoulder screws used on rectangular waveguide, ven on very high power and very low noise equipment. Double ridge waveguide is different story. I have seen occasional waveguide arcs on very high power equipment starting at he junction between components or sections of waveguide, but not sufficiently r often enough or consistently enough to be able to pin it to the use of egular screws. Maybe I have been doing it wrong all along :) hanks for the reminder!!! Didier KO4BB Sent from my Verizon Wireless BlackBerry -----Original Message----- rom: "J. Forster" <jfor@quik.com> ender: time-nuts-bounces@febo.com ate: Sun, 19 Sep 2010 03:50:07 o: Discussion of precise time and frequency measurement<time-nuts@febo.com> eply-To: jfor@quik.com, Discussion of precise time and frequency measurement <time-nuts@febo.com> ubject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections? The shoulder screw is an interesting idea, but I've seen (and taken apart) ots and lots of waveguide over the decades, including brand new stuff rom major manufacturers and mil contractors. I've never seen a shoulder crew used. FWIW, -John ================= > Hi, Not strictly true. Material is not important apart from environmental (corrosion) issues, but that is not the only concern. WG-16 (British) / WR 90 flanges are not dowelled. They rely on the fastners for alignment. The correct fastners are 5/32" shoulder screws (0.1557" dia 6-32 thread). The precsion shoulder locates the flanges. 5/32" bolts (a bolt has a plain shank) are a good second choice but you will probably have to pack them with washers as the grip length won't match ;-) If you have to use screws, at least align two diagonal holes with 5/32" dowels while nipping up the first two screws. Robert G8RPI. --- On Sun, 19/9/10, jimlux <jimlux@earthlink.net> wrote: From: jimlux <jimlux@earthlink.net> Subject: Re: [time-nuts] Semi-OT: Hardware for WR-90 waveguide sections? To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Date: Sunday, 19 September, 2010, 4:13 k6rtm@comcast.net wrote: > Not completely OT, as stable and accurate timebases are very useful in > microwave systems... > What's the proper hardware to use for connecting WR-90 (10GHz) waveguide > sections? I figure 8-32 brass or stainless, avoiding anything magnetic. > whatever fits through the holes in the flanges. #8 requires a 0.187 hole, #6 requires a 0.156, #4 is 0.125, #2 is 0.109 One reference I have says WR90 has 0.169" holes, so that's #6 hardware. Whether it is magnetic or not doesn't make any difference. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ ime-nuts mailing list -- time-nuts@febo.com o unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts nd follow the instructions there. ______________________________________________ ime-nuts mailing list -- time-nuts@febo.com o unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts nd follow the instructions there.

time-nuts@lists.febo.com

Semi-OT: Hardware for WR-90 waveguide sections?