Dear Peter, LF Group, I think the mathematical theory of transmission lines evolved with the appearance of long-distance telegraph lines, but measuring standing waves could only have become practical
I do not think there is a "true" SWR meter which can work by measuring things at only one point on a transmission line. SWR is a ratio and can only be indicated by making a set up which responds to i
In reply to: I do not think there is a "true" SWR meter which can work by measuring things at only one point on a transmission line. SWR is a ratio and can only be indicated by making a set up which
We agree then for, as I said , it cannot be _measured_ at one point. The loosely called "SWR meter" sold as such in ham radio shops is badly named , and "SWR Comparator-Deducer" would be better. But
I think the mathematical theory of transmission lines evolved with the appearance of long-distance telegraph lines, but measuring standing waves could only have become practical with the appearance o
Hi All, As a further input to this "off-topic" item, I possess an instrument made by a well-respected supplier to the professional mobile comms industry which is intended for use in installing 50 ohm
[ ... ] By the way I also have in my possession a photograph of a village roadside sign for a place just off the A1 in the North East of the UK called "SWARLAND" ! I also remember during the early da
The SWR measuring trolley was a standard piece of kit at multi-tx HF transmitter sites with multiple openwire antennas and feeders. Keep in mind the real estate involved was large, very large, and wh
I would like to thank all of you who sent me information, through this reflector and direct, regarding the history of the use of SWR as a method of measuring antenna/transmission line mismatch. I wil
Hi Peter, The instrument I referred to which is calibrated in % Match Efficiency is by Helper Instruments and contains a simple sig genny and VSWR meter. I still have this unit and could do you a pho
