RF Design 90s RLB article ?
 

Does anyone recall seeing an article for constructing a return loss bridge
in RF Design in late 80s or early 90s? I'd like to see if I can get a
scan, I've been bitten by the RLB bug.
tnx
Hank WD5JFR

Does anyone recall seeing an article for constructing a return loss bridge
in RF Design in late 80s or early 90s? I'd like to see if I can get a
scan, I've been bitten by the RLB bug.

If you finished your VNA, you already have one Hank.

W4ZCB

Does anyone recall seeing an article for constructing a return loss bridge
in RF Design in late 80s or early 90s? I'd like to see if I can get a
scan, I've been bitten by the RLB bug.

If you finished your VNA, you already have one Hank.

W4ZCB

Does anyone recall seeing an article for constructing a return loss bridge
in RF Design in late 80s or early 90s? I'd like to see if I can get a
scan, I've been bitten by the RLB bug.
================================

Isn't a return-loss bridge electrically exactly the same as the
common-or-garden SWR meter with the meter scale calibrated in something
different from SWR = 1 to infinity?

Same applies to reflection coefficient bridge.

Does anyone recall seeing an article for constructing a return loss bridge
in RF Design in late 80s or early 90s? I'd like to see if I can get a
scan, I've been bitten by the RLB bug.
================================

Isn't a return-loss bridge electrically exactly the same as the
common-or-garden SWR meter with the meter scale calibrated in something
different from SWR = 1 to infinity?

Same applies to reflection coefficient bridge.

Here is a newsgroup article I saved. I downloaded all of the RFD
programs from this site. Go here. Unwrap the URL.

Henry
==============================================
http://communities.msn.com/Electrica...tware &fc_a=0



Date: Tue, 24 Apr 2001 13:30:11 -0700
From: "Neil"
To: "Low Power Amateur Radio Discussion"
Subject: [96966] MSDOS BASIC software archive and RF Design Mag
software archive

For all those who asked about the RF design files:

Click on the "Join Now" icon in upper right corner of page and go from
there.
Involves getting MSN passport which is just e-mail address at
hotmail.com
and password of your choice.

There are nearly a hundred files so can't forward them but could any
single
file from list on that page. they are named RFDXXYY.ZIP where XXis month
and
YY is year.

I downloaded them by right clicking on each and chosing "save target
as".
Some reason it insisted on saving it as xxxx.ZIP.zip so I edited out the
...ZIP from each save as so it became xxxx.zip.


Neil
http://www.aade.com

Almost All Digital Electronics
1412 Elm St. SE
Auburn, WA 98092
253-351-9316

Here is a newsgroup article I saved. I downloaded all of the RFD
programs from this site. Go here. Unwrap the URL.

Henry
==============================================
http://communities.msn.com/Electrica...tware &fc_a=0



Date: Tue, 24 Apr 2001 13:30:11 -0700
From: "Neil"
To: "Low Power Amateur Radio Discussion"
Subject: [96966] MSDOS BASIC software archive and RF Design Mag
software archive

For all those who asked about the RF design files:

Click on the "Join Now" icon in upper right corner of page and go from
there.
Involves getting MSN passport which is just e-mail address at
hotmail.com
and password of your choice.

There are nearly a hundred files so can't forward them but could any
single
file from list on that page. they are named RFDXXYY.ZIP where XXis month
and
YY is year.

I downloaded them by right clicking on each and chosing "save target
as".
Some reason it insisted on saving it as xxxx.ZIP.zip so I edited out the
...ZIP from each save as so it became xxxx.zip.


Neil
http://www.aade.com

Almost All Digital Electronics
1412 Elm St. SE
Auburn, WA 98092
253-351-9316

You'll also find information about return loss bridges and how to
construct and use them in Hayward, Campbell, and Larkin's _Experimental
Methods in RF Design_ (ARRL) and its now out-of-print predecessor _Solid
State Design for the Radio Amateur_ by Hayward and DeMaw (ARRL).

Roy Lewallen, W7EL

You'll also find information about return loss bridges and how to
construct and use them in Hayward, Campbell, and Larkin's _Experimental
Methods in RF Design_ (ARRL) and its now out-of-print predecessor _Solid
State Design for the Radio Amateur_ by Hayward and DeMaw (ARRL).

Roy Lewallen, W7EL

"Henry Kolesnik" wrote in message om...
Return loss is the
fraction of power that isn't absorbed by the load. See QST April 1959 pp
24-28 for Warren Bruene's article, "An Inside Picture of Directional
Wattmeters."

You can find lots of references on the web, too. I think Charles
Wenzel's pages are almost always quite good, and recommend
http://www.wenzel.com/documents/swr.html, but a simple search may well
turn up things that suit your learning style better.

Cheers,
Tom

PS...Hank...sending a scan-to-text of the annual indexes for about
1988-1992, for couplers and whatever else was close to them on those
pages. I suspect it may be Joel Dunsmore's "Simple SMT Bridge Circuit
Mimics Ultar-Broadband Coupler" that you are interested in. I have
that here and can scan it, but you might check out Neil's referenced
site too.