I did that once, made a mistake while putting the connector on, needed a cable stretcher. Now, length needed + about 2'
I normally operate QRP while doing portable so an loss is cumulative, connectors are not on my radar at all.
-
You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
Does feed line length matter?
- Thread starter Marconi
- Start date
I normally operate QRP while doing portable so an loss is cumulative, connectors are not on my radar at all.
Shadetree Mechanic
Delaware Base Station 808
Previously he had a statement that he would be away for several weeks and would not be available. Apparently on another site he used to disappear for weeks at a time then return and be confrontational. Too bad. He really did have some good things to contribute.
Sometimes it is not a problem with what is said but in the way it is said.
The only SWR I focus on is what is present on the feed line and at the antenna socket to minimise losses on the transmission line and to stop the transceiver from blowing its nuts apart. I don't give a toss what the feed point impedance and therefore SWR is of the antenna is in relation to 50 ohms because as long as you can match it to what the transceiver needs it doesn't matter. One of my best contest antennas I used multi band had a SWR at the feed point of around 85:1 according to antenna modelling. SGC 230 antenna coupler between the feed point and the coax to the radio kept everything happy and a lovely strong signal booming out from it.
Connectors don't matter because they should be manufactured to be a 50 Ohm impedance (remember how impedance is calculated as a ratio between the outer diameter of the inner conductor and the inner diameter of the outer conductor) and therefore insertion loss of a properly built to spec connector with coax properly installed in it, which a lot of people don't do in respect to braid and PL259 connectors, then losses are negligible. Use an Amphenol 83-SP1 preparing the coax as per their instructions and you should have an almost perfect 50 Ohm impedance through the connector.
read my post on this thread. also read my post on the youtube videos you posted Marconi.
https://www.worldwidedx.com/threads/swr-issues-with-more-power.246684/page-4
https://www.worldwidedx.com/threads/swr-issues-with-more-power.246684/page-4
you might want to rethink that. Reflected watts affect the source of the signal. the end result is the heat generated at the source component in which they will eventually fail do to being operated out of spec.
BJ Radionut,
Do you still have the clip of the guy eating popcorn?
Might need it again.
Do you still have the clip of the guy eating popcorn?
Might need it again.
I understand and likely not going to change anytime soon.
"What we've got here is failure to communicate."