Keep in mind that all connectors are not alike. You can claim to make a
'type N' if you simply meet the interface requirements per the mil prf spec.
They all look similar but the details will tell what is a good power handler
and one that is crap.
Al
-----Original Message-----
From: Roger K8RI [mailto:tower@charter.net]
Sent: Sunday, February 06, 2005 9:27 PM
To: Tom Rauch; N6TA; 'Jim Lux'; 'William Turini'; towertalk@contesting.com
Subject: Re: [TowerTalk] Higher power RF connector?
I've blown out N double female connectors running a KW with relatively low
SWR (on the order of less than 3:1.
I've also had them taken out because of a nearby lightening strike.
I kept one wich looks perfect, but an ohm meter shows a dead short. (It has
a red band around it, just so it doesn't make it back into service<:-))
Tom, would you please let me know if you receive this and if it shows up on
the reflector.
Thanks,
Roger (K8RI)
>> You could look at the HN or even the C types.
>>
>> HN is more available and offers many of the features of
> the N but will
>> handle significantly more power.
>
> I'll second that.
>
>> I find it interesting that there are questions about the
> size of the N male
>> pin diameter. This connector is used in some 'high power'
> applications well
>> over a KW at 13MHz industrial equipment.
>
> In dry connectors with controlled SWR and no other problems
> N's are fine at a few KW. I've seen them handle as much as
> 10kW at HF in controlled environments with limited duty
> cycle.
>
> Most of the medium high power (1 to 5 kW) ISM equipment I
> see uses HVN connectors.
>
> The problem is the close air-gap spacing inside the
> connector and the small pin severely limit ability of "N"
> connectors to take abuse. The spacing and pin size are
> almost exactly the same as a BNC connector. Get any moisture
> in it, have a lightning hit, have a high SWR, and the N
> connector is often history.
>
> 73 Tom
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
> any questions and ask for Sherman, W2FLA.
>
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_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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