Menu

measuring cable loss

Search this Thread

Previous Post

Next Post

#5

Report Post

Old

August 14th 07, 10:22 PM posted to rec.radio.amateur.antenna

J. B. Wood J. B. Wood is offline

J. B. Wood is offline

external usenet poster

First recorded activity by RadioBanter: Jul 2006

Posts: 61

Default

measuring cable loss

In article , wrote:

J. B. Wood wrote:

The challenge here is, given a transmission line of certain physical
length, to find a measurable value at the operating frequency(s). An RF
signal source with a surplus (but in proper operating order) General Radio
(Genrad) impedance bridge is good for this type of measurement. Keep in
mind that any coupling from the line to nearby structures will affect the
measurement. Sincerely, and 73s from N4GGO,

Even more of a challenge might be getting that impedance bridge to work
at 1 GHz...grin

Hello, and I must have had a senior moment. Forgot what freq the OP was
interested in. Too many years spent making measurements in the 2-30 MHz
band I guess ;-) Of course now we're looking at a vector network analyzer
to make the measurement (not something most Hams have in the shack). I
wonder if MFJ has anything? Sincerely,

John Wood (Code 5550) e-mail:
Naval Research Laboratory
4555 Overlook Avenue, SW
Washington, DC 20375-5337

Reply With Quote

Reply With Quote

Thread Tools	Search this Thread
Show Printable Version	Search this Thread: Advanced Search
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

Posting Rules
Smilies are On [IMG] code is On HTML code is Off Trackbacks are On Pingbacks are On Refbacks are On

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Measuring quarter wave cable length with HP 8405A	Gary Schafer	Antenna	8	May 5th 06 03:11 AM
Calculating Coaxial Cable Loss	David Robbins	Antenna	5	January 1st 04 01:07 AM
Antenna cable loss query	AES/newspost	Scanner	7	December 11th 03 10:55 PM
Antenna cable loss query	AES/newspost	Shortwave	7	December 11th 03 10:55 PM
Measuring small inductances using a return loss bridge	aWn	Homebrew	11	September 11th 03 03:17 AM

All times are GMT +1. The time now is 10:04 AM.

About Us

"It's about Radio"

Contact Us RadioBanter forum home Privacy Statement

Copyright © 2017