Is it logical to assume A 50 ohm cable with a 36.2 ohm PL 259 connector no longer has a characteristic impedance of 50 ohms?
What is the UHF Connector?I was going to ask where to buy these 36.2 ohm connectors from??
Is it logical to assume A 50 ohm cable with a 36.2 ohm PL 259 connector no longer has a characteristic impedance of 50 ohms?
That's my favorite answer so farA 50 ohm cable is still a 50 ohm cable but a UHF connector inserts a VERY slight, almost insignificant impedance bump into the SYSTEM. PL259's have never been known as constant impedance connectors. The fact that your link shows the bump in impedance results in an SWR or only 1.016:1 at 30 MHz and 1.054:1 at 100 MHz shows just how insignificant that bump is. Manufacturing variances in coax cable itself will create such impedance bumps and certainly ANY deformation of the cable from pinching or kinking will create at least that much of a bump. I use PL259 connectors up to 2m without issue and even have some inline on 70cm when inserting meters etc. |Not an issue in the real world.
I was going to ask where to buy these 36.2 ohm connectors from??
Amphenol has been making 36.2 ohm UHF connectors since the 1930's.. available at any Ham Radio Outlet or Radio ShackFrom a drug addict working on radios at your local truck stop.
There's a difference between real world use for the end user and real-world ramifications on a Laboratory rf test bench when making adjustments. Yes you are correct the end user would never notice a difference.From a physics standpoint yes there is difference but in real world use it means nothing.
Nope and don't care. I will never be doing that type of testing that would require accuracy of that type. I doubt that any radio repair would be concerned about that either.Have you ever contemplated how to make those impedance bumps invisible to test equipment
Or how they might affect the accuracy of that test equipment while making adjustments?
Amphenol has been making 36.2 ohm UHF connectors since the 1930's.. available at any Ham Radio Outlet or Radio Shack
So instead of going out and purchasing a 50 ohm dummy load I suppose we could build our own 45 ohm dummy load for our test bench and accomplish the same results tuning a radio?Nope and don't care. I will never be doing that type of testing that would require accuracy of that type. I doubt that any radio repair would be concerned about that either.