Re: [Elecraft] KX3 / K3 Antenna Sharing
One potential problem with the MFJ 4-way switch: It shorts the unselected positions to ground. If you are using it to switch between radios, transmitting on an unselected radio results in transmitting into a short circuit. I use it, but I try to be _very_ careful. Cheers - Bill, AE6JV On 12/31/13 at 4:42 AM, k...@icloud.com (Reginald J Mackey SR) wrote: I 've use both MFJ and Alph-Delta switches and they work well. no problems even at 1k. --- Bill Frantz| I wish there was a knob on the TV to turn up the 408-356-8506 | intelligence. There's a knob called brightness, but www.pwpconsult.com | it doesn't work. -- Gallagher __ 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] KX3 / K3 Antenna Sharing
I 've use both MFJ and Alph-Delta switches and they work well. no problems even at 1k. Reggie K6xr Ham Radio Since 1955 DXCC, RCC, WAZ QRP IS KING On Dec 31, 2013, at 4:40 AM, James Bennett w6...@me.com wrote: I've got a KX3 and a K3 - I want to share an antenna between the two radios. I do this now by manually detaching the coax from one and connecting it to the other. Are there any quality coax switches on the market that have adequate isolation between ports that I could use for this purpose? Tnx, Jim / W6JHB __ 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] KX3 / K3 Antenna Sharing
I share 4 radios on the radio a position of a SO2R setup using a Bird 74 coax switch the best on the market with 6 positions. Shop for a good used one new they are pricy but what you would expect from Bird. 73, Fred/N0AZZ K3 Ser # 6730--KX3 # 5210--K2/100 # 6470-KAT100 P3/SVGA--KAT500--W2 Amps Elecraft KPA500 HF/6m--Alpha's 9500 HF--87A HF--Mirage B-5030-G 300+w--(2) B-5016-G's 165w 2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Reginald J Mackey SR Sent: Tuesday, December 31, 2013 6:42 AM To: James Bennett Cc: Elecraft List Subject: Re: [Elecraft] KX3 / K3 Antenna Sharing I 've use both MFJ and Alph-Delta switches and they work well. no problems even at 1k. Reggie K6xr Ham Radio Since 1955 DXCC, RCC, WAZ QRP IS KING On Dec 31, 2013, at 4:40 AM, James Bennett w6...@me.com wrote: I've got a KX3 and a K3 - I want to share an antenna between the two radios. I do this now by manually detaching the coax from one and connecting it to the other. Are there any quality coax switches on the market that have adequate isolation between ports that I could use for this purpose? Tnx, Jim / W6JHB __ 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 __ 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] KX3 / K3 Antenna Sharing
I just ordered an Alpha Delta Delta-2B switch for the same purpose (except I'm not lucky enough to own a K3--I'm switching between my KX3 and my IC706MKIIG). This tech note indicates that these switches can be used to switch radios just like they can be used to switch antennas: http://www.alphadeltacom.com/pdf/DELTA-4B%20multi-connections-2.pdf 73, Dave NK0E On 12/31/2013 9:30 AM, James Bennett w6...@me.com wrote: I've got a KX3 and a K3 - I want to share an antenna between the two radios. I do this now by manually detaching the coax from one and connecting it to the other. Are there any quality coax switches on the market that have adequate isolation between ports that I could use for this purpose? Tnx, Jim / W6JHB __ 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] KX3 / K3 Antenna Sharing
I am using a couple DAIWA manual coax switches. 2-pos selects either K3/10 or KX3 (at 12w) and 4-pos is for antenna selection at 300w from the amplifier. I do not use coax switches at QRO levels but I only run that on 6m and 2m with dedicated antenna so no switching is needed (I do use coax relays). I am getting a used BW 5-pos switch which will be used at HF/6m under 300w. I have to check it out first. 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@gmail.com __ 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] KX3 / K3 Antenna Sharing
Thanks for the info all - I looked at that Bird 6 position switch - about 1/2 the cost of my KX3 - yikes! Think I'll pass on that one. I do have a Daiwa 2 position switch that I've hooked up to share my antenna - one side to the K3, the other to the KX3. Seems to work OK, although when a strong signal (S9+) on the K3, I can still hear it when the switch is set to the KX3. I wonder if the Alpha/Delta switches have any better isolation that thiat Jim / W6JHB On Tuesday, Dec 31, 2013, at Tuesday, 12:38 PM, Edward R Cole wrote: I am using a couple DAIWA manual coax switches. 2-pos selects either K3/10 or KX3 (at 12w) and 4-pos is for antenna selection at 300w from the amplifier. I do not use coax switches at QRO levels but I only run that on 6m and 2m with dedicated antenna so no switching is needed (I do use coax relays). I am getting a used BW 5-pos switch which will be used at HF/6m under 300w. I have to check it out first. 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@gmail.com __ 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] KX3 / K3 Antenna Sharing
Some of the relay-based antenna switches actually have two sets of relay contacts between the antenna and the not-selected radio. This can improve the isolation. However the difference between S9+ and I can barely hear is a whole lot of dB, and asking for complete silence is asking for a lot. http://www.qth.com/topten/abss.htm Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Bennett Sent: Tuesday, December 31, 2013 12:56 PM To: Elecraft Reflector Reflector Subject: Re: [Elecraft] KX3 / K3 Antenna Sharing Thanks for the info all - I looked at that Bird 6 position switch - about 1/2 the cost of my KX3 - yikes! Think I'll pass on that one. I do have a Daiwa 2 position switch that I've hooked up to share my antenna - one side to the K3, the other to the KX3. Seems to work OK, although when a strong signal (S9+) on the K3, I can still hear it when the switch is set to the KX3. I wonder if the Alpha/Delta switches have any better isolation that thiat Jim / W6JHB On Tuesday, Dec 31, 2013, at Tuesday, 12:38 PM, Edward R Cole wrote: I am using a couple DAIWA manual coax switches. 2-pos selects either K3/10 or KX3 (at 12w) and 4-pos is for antenna selection at 300w from the amplifier. I do not use coax switches at QRO levels but I only run that on 6m and 2m with dedicated antenna so no switching is needed (I do use coax relays). I am getting a used BW 5-pos switch which will be used at HF/6m under 300w. I have to check it out first. 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@gmail.com __ 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 __ 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
