[Amps] "N, " "TNC" and "BNC" connectors are rated at 500 Watts and work at 1, 000 Watts as log as the load is good..

[Roger (K8RI)]

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 
them out.

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.

73

Roger (K8RI)

>
> 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
>> cycle.
>>
>> Maybe I shouldn't worry so much ...
>>    >>
>> --
>>     Ron  KA4INM - Youvan's corollary:
>>                   Every action results in unwanted side effects.
>> _______________________________________________
>> Amps mailing list
>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>   		 	   		
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>