Re: [Elecraft] W2 directional coupler N-connector
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 e...@elecraft.com 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, pmu...@xmission.com wrote: I am considering a small EME station on 432 Mhz. I would like to __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] W2 directional coupler N-connector
One reason I experience is that UHF connectors are not available for all types of coaxial cable. Case in point, UHF connectors are no longer available for some sizes of Andrew (now Commscope) Heliax however type-N or BNC are for those sizes. So it's not always a bandwidth, loss, or impedance related problem but a simple hardware issue instead. Gary N6LRV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of riese-k3...@juno.com Sent: Tuesday, August 07, 2012 1:08 PM To: pmu...@xmission.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] W2 directional coupler N-connector not sure why you would change UHFs are good at 432. Bob K3DJC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] W2 directional coupler N-connector
I am considering a small EME station on 432 Mhz. I would like to measure output power up to 200 watts. It appears that the current SO-239 connectors in the directional coupler could easily be changed to female N-connectors. Has anyone done that and what has been your experience. Thanks, 73 Paul __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] W2 directional coupler N-connector
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, pmu...@xmission.com wrote: I am considering a small EME station on 432 Mhz. I would like to __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] W2 directional coupler N-connector
The sensors can be ordered with N connectors from Elecraft. Bob, N6CM On Tue, Aug 7, 2012 at 9:45 AM, Ken G Kopp kengk...@gmail.com 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, pmu...@xmission.com wrote: I am considering a small EME station on 432 Mhz. I would like to __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] W2 directional coupler N-connector
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, pmu...@xmission.com wrote: I am considering a small EME station on 432 Mhz. I would like to __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] W2 directional coupler N-connector
not sure why you would change UHFs are good at 432,just need taping,, but then I tape type Ns too,,use good quality Amphenol UHF connectors I used them on a stacked set of K2RIW at 432 and after 15 year of service looked as good as when I put then up Bob K3DJC On Tue, 07 Aug 2012 10:12:47 -0600 pmu...@xmission.com writes: I am considering a small EME station on 432 Mhz. I would like to measure output power up to 200 watts. It appears that the current SO-239 connectors in the directional coupler could easily be changed to female N-connectors. Has anyone done that and what has been your experience. Thanks, 73 Paul __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
