[Test-Equipment] Does it really make a difference over the short haul ????

[Doug Hensley]

This question is for the experts on this list.

The Trompeter Company in California for many years manufactured patching panels that were used by both military & broadcast operations.  Some were 50 ohm but most were 75 ohm for video patching.

All these panels used BNC's on the rear and the famous Trompeter barrel socket on the front.  50 ohm set ups were made but most readily available are 75 ohm.  The distance from the rear BNC center pin to the Trompeter barrel pin is less than an inch.

Question 1:  Given 50 ohm cables are used front & back, does using a panel that is rated for 75 ohms really amount to a hill of beans regards ham use?

Question 2:  If the panel itself has negligible affects, can short 75 ohm patch cords be used for RF without degrading the signals?

Not sure how else to ask this.

Does anyone know?


Doug W5JV







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