I think we should also count pieces of incoming db lost by insertion of various devices. I know ever coax joint, every coax switch, and so on costs rcv db. But what does an amp in line take away? Tub
A separate RCV antenna solves that issue which is really not germain to SS vs VT anyway. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.
You "know" WRONG! This is one of those often repeated myths with little basis in fact. A properly done coax connection is essentially lossless at HF. Loss in a switch depends on the quality of the sw
Exactly. It wouldn't take hardly any loss at all for a connector, switch, or whatever to get warm fairly quickly when power was transferred through it. If it did have significant loss, you would bur
Amen! Tom iid "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery.." -- Winston Churchill "Democracy depends on w
Actually, the loss from a "UHF" connector would be in the coax, not all concentrated in the connector as I previously stated. I just got the following private e-mail that nicely explained that: "Whil
Correction -- JUNK connectors can get hot with 1,5kW. Example are the JUNK elbows and Tees that use a tiny spring as the center conductor. I've also had the JUNK Tees fall apart. 73, Jim K9YC _______
Yes. Several years ago, a VE1 (RGB, I think) sent me a copy of measurements he had done on a bunch of PL259s and barrels in a string. His data showed VERY low insertion loss to fairly high frequencie
I had a distributor who decided to start tuning all of the two-way radios that he sold instead of having my company tune them for the desired frequency. He set up a test bench and tried some of the
Mike, Look at Wikipedia for "mismatch loss" to see how there can be loss without heat in an RF system. There are 2 kinds of loss: dissipative (heats up) and mismatch (produces no heat). If a connecto
Mike got it right the first time. The length of a PL259 and mating connector is quite small as a fraction of a wavelength below 500 MHz. The so-called mis-match losses are pretty much fictional, and
Nevertheless, mismatch losses are a BIG deal to the cellular folks. They do exist and can easily be seen at much lower frequencies with cheap connectors that are not correctly designed and also if te
That's 1-2 GHz. I don't think anyone would debate that. I don't think anyone would debate that cheap connectors are problematic. I've had no end of problems with them. I suggest that you try measurin
K9YC wrote... Some years ago, I discovered a 'cure' for the problems brought to my station by cheapie connectors. They ALL went into the S**can! Since then, no problems. No connector problems at leas
I sold them for fifty cents each at hamfests. Jim _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
That's great Brown. Fob your garbage junk off to unsuspecting and probably inexperienced hams. Stuff you wouldn't use yourself. What a guy. 37 Rob K5UJ _______________________________________________
Selling weak tubes and lossy coax to CBers is also a lot of fun but nothing beats selling leaky paper caps to audiophools. Carl KM1H That's great Brown. Fob your garbage junk off to unsuspecting and
Yeah, they're almost as gullible as hams, who spend upwards of $200 on Heil mics with $1 capsules in them, magic 43 ft verticals, Windom antennas, G5RV "all band" antennas, so-called baluns in enclos
Much the same here. And it's a real problem, because every connector I can buy locally (Chile) is Chinese-made, and while the best of them are satisfactory, most of the rest are junk. But not always