Topband: Rather use N-type (was Re: The answer to PL-259 soldering/reliability problems)

[donovanf at starpower.net]

Hello Arunas, 


While the relatively new 4.3-10 family of "mini DIN" connectors is 
far superior to any connectors we've discussed in this thread, their 
cost is nearly ten times higher. 


On the other hand, the much bulkier 7/16 DIN connectors offer 
similar high performance and they're widely available at much 
more affordable prices. For example, do this Google search 


7/16 DIN connector site:ebay.com 


73 
Frank 
W3LPL 





-----Original Message----- 
From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of 
ly2ij at qrz.lt 
Sent: Friday, December 7, 2018 6:39 AM 
To: topband at contesting.com 
Cc: topband at contesting.com 
Subject: Re: Topband: Rather use N-type (was Re: The answer to PL-259 
soldering/reliability problems) 

There is new connector already widely used in cellular market - 4.3-10. 
Designed to get rid of Intermodulation problems - outer contact is 
torque independent. 

Size is +- same as N/ UHF connector, inner pin is about 3mm in diameter, 
graph shows 6 kW at 100 MHz at perfect mach. 

https://literature.hubersuhner.com/Technologies/Radiofrequency/RFConnectorsE 
N/?page=406 


73 Arunas Ly2ij 

>>. 

The only issue to think about it carefully is the power rating of 
N-connectors (even PTFE). 
These connectors are not designed and dedicated for high power and as 
the inner pin is 
a bit tiny I do not recommending to use them over "legal limit"... 

I tested the PTFE version of N-connectors at 4kW in the lab and there 
was no problem but 
it was in comfortable conditions... low humidity, well mounted, no soft 
iron soldering etc. 
The conditions outside the shack can be a different situation... 

In general - using the N-connectors with high quality cables properly 
mounted up to "KPA500" 
is highly recommended. The higher power level is deserving the 7/16 DIN 
usage or similar. 

(all is talking about "professional" approach to our ham radio hobby) 
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