[Amps] "N, " "TNC" and "BNC" connectors are rated at 500 Watts and work at 1, 000 Watts as log as the load is good..
k8ri at rogerhalstead.com
Mon Nov 11 03:04:01 EST 2013
On 11/11/2013 2:03 AM, Charles Harpole wrote:
> Notice that the Alpha 76a warns to put no more than 100 watts thru it on stand by.
Having used, misused, and abused N-type connectors, experience in the
real world has shown me that these are not connectors to use for QRO.
Yes, I know hams who have used them at the legal limit for years,
I have found N-type will run the legal limit if the SWR is low AND to
you QRO is not 1 watt over the 1500 and usually at the end of several
hundred feet of inexpensive coax.
With a center fed, sloping dipole, which is far from being a balanced
antenna, I have blown Male and the double female connectors by moving 50
to 100 KHz off resonance. I've also had nearby lightening strikes take
I'd prefer DIN 7-16 connectors, but haven't found a source at reasonable
prices. Although their construction is such that a small shop could
easily copy the design.
UHF connectors are fine if properly weatherproofed and the loss through
50 MHz isn't enough to be worth mentioning. I just do not like their
lack of strength and they start to get expensive to fit LMR-600.
I'd limit my use of BNCs to a 100 watts as do you or replace them with
UHF or N type for a couple hundred watts.
> Charles Harpole
> k4vud at hotmail.com
>> Date: Sun, 10 Nov 2013 22:05:46 -0500
>> From: ka4inm at gmail.com
>> To: amps at contesting.com
>> Subject: [Amps] "N, " "TNC" and "BNC" connectors are rated at 500 Watts and work at 1, 000 Watts as log as the load is good..
>> Hi Bill WB6RFW:
>> Now that I'm in the middle of doing a QSK mod to the Henry 2KD-4 ... I'm
>> looking at the BNC input connector to the amp. It occurs to me that if I
>> use my FT-2000D barefoot through the amp I may be pushing the BNC pretty
>> hard at 200W. I can't think of a time I've ever put that much power
>> through a BNC. There's also that piece of RG-58U in there. I guess I've
>> put 200W pulse from a transponder through one but it's pretty low duty
>> Maybe I shouldn't worry so much ...
>> Ron KA4INM - Youvan's corollary:
>> Every action results in unwanted side effects.
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