Re: W2 directional coupler N-connector

Posted by Paul Urie on Aug 09, 2012; 1:40pm
URL: http://elecraft.85.s1.nabble.com/W2-directional-coupler-N-connector-tp7560540p7560671.html

Thanks for all of the comments. I had an early experience in ham radio
with satellites, AO-10 and AO-13, at frequencies 144, 430, 1.3 Ghz and 2.4
Ghz. Because of those frequencies N-connectors became a way of life. So I
automatically think of N-connectors when I am working with those
frequencies. If Elecraft offered the directional coupler with
N-connectors, I would buy it and pay extra for the connectors.

73,
Paul N7QOC

On 8/7/12 11:18 AM, "Eric Swartz - WA6HHQ, Elecraft" <[hidden email]>
wrote:

>Please note that changing the connectors from SO-239s to N's will
>uncalibrate the W2's directional coupler as you go higher in frequency -
>especially on 432 MHz, leading to less accurate SWR indications. It may
>also affect wattmeter accuracy.
>
>We included additional compensation components in the coupler design to
>cancel the reluctance of the SO-239s, flattening the coupler's frequency
>response.
>
>73,
>
>Eric
>---
>www.elecraft.com
>
>On 8/7/2012 9:45 AM, Ken G Kopp wrote:
>> Yes Paul, the connectors on the sending units are easily changed.
>> All mine have been changed using kits from Morse Express that
>> come with nicely-done interfacing plates to compensate for the
>> pattern change.  I've also changed the three antenna connectors
>> on my K3 using these neat little kits.
>>
>> A caution ... take note of the TRANSMITTER and LOAD labels and
>> the positioning of the cover.  You have a 50-50 chance of reversing
>> the labeling if you reverse the cover.  The labeling is on the -cover-
>> and not the unit itself.
>>
>> 73!
>>
>> Ken Kopp - K0PP
>>
>>   On Tue, Aug 7, 2012 at 4:12 PM,  <[hidden email]> wrote:
>>> I am considering a small EME station on 432 Mhz. I would like to
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