Split while using Diversity
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I'm having difficulty understanding what Wayne wrote on 11/21. He said:
"Just in case you missed it, recent K3 firmware releases allow you to use SPLIT even in diversity mode. When in diversity mode, VFO A controls both receivers. VFO B remains independent, so it can be used as a frequency holding register (tap A/B to exchange it with VFO A), or for SPLIT." Here's what I am experiencing with MCU 2.67. When in diversity I have VFO B tracking VFO A and I am using a separate receive antenna for VFO B. To activate SPLIT, the only way to actually change my transmit frequency is to turn the VFO B dial thus loosing my diversity. Using the A/B button allows me to listen to the original frequency on either receiver but not both. And transmission will occur on VFO B requiring me to swap back before transmitting again. That's a problem. The only way I see this working is to use XIT instead of split. I'm just not a fan of XIT. So am I missing something? 73, Mike K2MK _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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At 12/3/2008 06:06 PM, K2MK wrote:
>Here's what I am experiencing with MCU 2.67. When in diversity I >have VFO B tracking VFO A and I am using a separate receive antenna >for VFO B. To activate SPLIT, the only way to actually change my >transmit frequency is to turn the VFO B dial thus loosing my diversity. > >Using the A/B button allows me to listen to the original frequency >on either receiver but not both. And transmission will occur on VFO >B requiring me to swap back before transmitting again. That's a problem. > >The only way I see this working is to use XIT instead of split. I'm >just not a fan of XIT. So am I missing something? > >73, >Mike K2MK That's basically how I operated this past weekend. But I think I realized that I was missing something. Those in the know can correct me. It has to do with the blinking second decimal point, which confused me. At times, I saw A blink, B blink, and A and B blink. I believe that there are two methods to achieve diversity. First is the way that Mike described and that I generally did over the weekend. You enable the SUB by pressing SUB. You press RX ANT to get AUX. Then you tap A>B twice to get both the receivers to be the same frequency and filter settings. Then you press and hold SUB for a second to link. In this case, I believe the second decimal in VFO B will blink, indicating LINK. However, there is another method for achieving diversity. If you press and hold SUB for two seconds, first you will see LINK and then DIVRSTY. I believe in this case, the second decimal in VFO A will blink and the settings indicated on VFO A will control both receivers and set the sub antenna to AUX. This allows you to use VFO B for SPLIT or a temp register. Is this interpretation correct??? _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Ed:
That's it. I just tried it. I wasn't holding the SUB button long enough. When it displays DIVRSTY, VFO B tracks VFO A as before. But when you activate SPLIT, you can tune VFO B to a different transmit frequency but both receivers are still tuned to the original frequency. When you turn off SPLIT, the VFO B display returns to the original frequency. Thanks for the clarification. 73, Mike K2MK -------------------------------------------------- From: "Ed K1EP" <[hidden email]> Sent: Wednesday, December 03, 2008 6:14 PM To: "K2MK" <[hidden email]>; "Elecraft Reflector" <[hidden email]> Subject: Re: [Elecraft] Split while using Diversity > At 12/3/2008 06:06 PM, K2MK wrote: > >>Here's what I am experiencing with MCU 2.67. When in diversity I have VFO >>B tracking VFO A and I am using a separate receive antenna for VFO B. To >>activate SPLIT, the only way to actually change my transmit frequency is >>to turn the VFO B dial thus loosing my diversity. >> >>Using the A/B button allows me to listen to the original frequency on >>either receiver but not both. And transmission will occur on VFO B >>requiring me to swap back before transmitting again. That's a problem. >> >>The only way I see this working is to use XIT instead of split. I'm just >>not a fan of XIT. So am I missing something? >> >>73, >>Mike K2MK > > That's basically how I operated this past weekend. But I think I realized > that I was missing something. Those in the know can correct me. It has > to do with the blinking second decimal point, which confused me. At > times, I saw A blink, B blink, and A and B blink. I believe that there > are two methods to achieve diversity. First is the way that Mike > described and that I generally did over the weekend. You enable the SUB > by pressing SUB. You press RX ANT to get AUX. Then you tap A>B twice to > get both the receivers to be the same frequency and filter settings. Then > you press and hold SUB for a second to link. In this case, I believe the > second decimal in VFO B will blink, indicating LINK. However, there is > another method for achieving diversity. If you press and hold SUB for two > seconds, first you will see LINK and then DIVRSTY. I believe in this > case, the second decimal in VFO A will blink and the settings indicated on > VFO A will control both receivers and set the sub antenna to AUX. This > allows you to use VFO B for SPLIT or a temp register. Is this > interpretation correct??? > Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Press REV while in Diversity-SPLIT allows you to listen on VFO B's frequency (while REV is depressed). Release it and you are listening on VFO A. I both cases you are in Diversity RX but just swapping frequencies between VFO A and B. This is similar in function to using the K3 with no KRX3 in SPLIT, but you're using both RXs to receive with. If you've used the T-F Set button in Kenwoods or XFC in Icoms, the operation is very similar (except you're in Diversity). 73, Bill |
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In reply to this post by Mike K2MK
_______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Re: Split while using Diversity
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Stan,
Diversity reception has been around for quite a while. It involves having 2 receivers connected to different antennas at different locations. Best at HF if one is horizontally polarized and the other vertical, but will work if the two antennas are separated by a wavelength or so even if the polarization is the same. The idea is that the different antennas will not suffer from QSB and other sources of fading at the same time. If you have only one antenna for each band, diversity will buy you nothing. 73, Don W3FPR Stan Rife wrote: > I've been trying to decide whether or not to ask this question, > because I didn't want to appear too dumb. What exactly is the > advantage of diversity receive? Is it for weak signal work > specifically? Can someone give me a quick run down on this? I've > never had a rig that would do this before, so I am not familiar with > the concept. > > I admit to not keeping up with the K3 feature list and manual. Go > ahead and flog me now. > > Stan > W5EWA > > > Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Don Wilhelm wrote:
>Stan Rife wrote: >> I've been trying to decide whether or not to ask this question, >>because I didn't want to appear too dumb. What exactly is the >>advantage of diversity receive? Is it for weak signal work >>specifically? Can someone give me a quick run down on this? I've >>never had a rig that would do this before, so I am not familiar with >>the concept. >> I admit to not keeping up with the K3 feature list and manual. Go >>ahead and flog me now. >> Stan >> W5EWA >> >> >Stan, > >Diversity reception has been around for quite a while. >It involves having 2 receivers connected to different antennas at >different locations. Best at HF if one is horizontally polarized and >the other vertical, but will work if the two antennas are separated by >a wavelength or so even if the polarization is the same. > >The idea is that the different antennas will not suffer from QSB and >other sources of fading at the same time. If you have only one antenna >for each band, diversity will buy you nothing. > >73, >Don W3FPR www.ei6iz.com has three stereo sound clips of diversity reception - one receiver in each ear. Scroll down to the section on the KRX3, click to open a sound clip and listen with stereo headphones. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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