Re: Announcing the Elecraft K3 Transceiver: 10/100W, 160-6m,
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Wayne -
Great K3 news! I just knew, as a retired EE product dev engineer - somewhere in Elecraft they must have been prototyping and designing going on for the next HF product! I just knew it must be - or at least I was sure wishing that way! Eureka! Question - dumb I know, but what would a ham do with "multiple receivers" in one's transceiver? With their own set of filters, etc.? And can I listen general coverage SW on HF bands? Thanks, Fred N3CSY __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ 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: Announcing the Elecraft K3 Transceiver: 10/100W, 160-6m,
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Fred (FL) wrote:
> > Great K3 news! I just knew, as a retired EE > product dev engineer - somewhere in Elecraft > they must have been prototyping and designing > going on for the next HF product! At the very least it's the reason you haven't heard as much from me for the past two years :) > Question - dumb I know, but what would a ham > do with "multiple receivers" in one's transceiver? > With their own set of filters, etc.? And can I > listen general coverage SW on HF bands? Typically you'd use the second receiver to monitor one frequency of interest while you operate on another. Or, you'd use both of them while operating split, SO2R, etc. Either reciever can be configured to do general-coverage receive. 73, Wayne N6KR --- http://www.elecraft.com _______________________________________________ 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: Announcing the Elecraft K3 Transceiver: 10/100W, 160-6m,
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In reply to this post by Fred (FL)
A ham would work split with multiple receivers, among other things.
The are a multitude of uses for a separate receiver, aside from working pile-ups. A second receiver allows one to listen to another band to search for DX, see if it's open, listen for a particular expedition on another band, etc., etc., etc... Why do you think all "competition class" transceivers offer at least a sub-receiver? Because people use them! ;) 73, Fred! Scott, N9AA P.S. I really wish I were able to go to Dayton this year! I'd love to paw that K3 in person! All I can say is: Wow! It's the next rig on my list... Fred (FL) writes: > > Question - dumb I know, but what would a ham > do with "multiple receivers" in one's transceiver? > With their own set of filters, etc.? And can I > listen general coverage SW on HF bands? > > Thanks, > Fred N3CSY > _______________________________________________ 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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In reply to this post by wayne burdick
Re Wayne's comment about SO2R, can you operate true SO2R with the K3,
ie listen on one band at the same time as you tranmit on another band? (If so, this is a very big selling point as you will only need one K3 for SO2R, whereas you need two of all other rigs currently available). 73 de Chris, G4BUE > Typically you'd use the second receiver to monitor one frequency of > interest while you operate on another. Or, you'd use both of them > while > operating split, SO2R, etc. > > Either reciever can be configured to do general-coverage receive. > > 73, > Wayne > N6KR _______________________________________________ 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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On Apr 29, 2007, at 1:26 AM, Chris Page wrote: > Re Wayne's comment about SO2R, can you operate true SO2R with the K3, > ie listen on one band at the same time as you tranmit on another > band? You could certainly listen on one band and transmit on another, but the T-R circuitry would have to be activated on both receivers, blanking them during keying. Full duplex might be possible at very low power (I haven't tried it yet), but certainly not at full power. In-box SO2R would probably require very extensive shielding that would have completely blown our cost, size, and weight budgets. Also, interestingly, we talked to a lot of SO2R ops who said that in-box SO2R was not that great an idea. User interface issues get very tricky, and there are T-R problems. For example, if you were trying to switch between 40 and 20 meters, the low-pass filter relays would have to be switched every time you key the rig. While this can be done, I wouldn't recommend doing fast QSK this way. The LPF relays are pretty beefy! It's even more dicey if you're trying to switch the ATU network between the two bands at CW keying speeds. 73, Wayne --- http://www.elecraft.com _______________________________________________ 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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Is this viable?: Remove the KPA100 from a K2 and put it in its own box (as
has been done many times by lots of folk) but operate it from the K3. In this way operate SO2R with the remainder of the K2 as the second rx for full SO2R and save a little on the cost of the built-in PA for the K3. David G3UNA ----- Original Message ----- From: "wayne burdick" <[hidden email]> To: <[hidden email]> Cc: <[hidden email]> Sent: Sunday, April 29, 2007 9:39 AM Subject: [Elecraft] Re: in-box SO2R? > > On Apr 29, 2007, at 1:26 AM, Chris Page wrote: > >> Re Wayne's comment about SO2R, can you operate true SO2R with the K3, >> ie listen on one band at the same time as you tranmit on another >> band? > > You could certainly listen on one band and transmit on another, but the > T-R circuitry would have to be activated on both receivers, blanking them > during keying. > > Full duplex might be possible at very low power (I haven't tried it yet), > but certainly not at full power. In-box SO2R would probably require very > extensive shielding that would have completely blown our cost, size, and > weight budgets. > > Also, interestingly, we talked to a lot of SO2R ops who said that in-box > SO2R was not that great an idea. User interface issues get very tricky, > and there are T-R problems. For example, if you were trying to switch > between 40 and 20 meters, the low-pass filter relays would have to be > switched every time you key the rig. While this can be done, I wouldn't > recommend doing fast QSK this way. The LPF relays are pretty beefy! It's > even more dicey if you're trying to switch the ATU network between the two > bands at CW keying speeds. > > 73, > Wayne > > > --- > > http://www.elecraft.com > > _______________________________________________ > 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 _______________________________________________ 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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The K3 won't control a KPA100, David. Please see my comments on the
auxbus in an earlier posting. 73, Wayne On Apr 29, 2007, at 9:25 AM, David Cutter wrote: > Is this viable?: Remove the KPA100 from a K2 and put it in its own > box (as has been done many times by lots of folk) but operate it from > the K3. In this way operate SO2R with the remainder of the K2 as the > second rx for full SO2R and save a little on the cost of the built-in > PA for the K3. > > David > G3UNA > > ----- Original Message ----- From: "wayne burdick" <[hidden email]> > To: <[hidden email]> > Cc: <[hidden email]> > Sent: Sunday, April 29, 2007 9:39 AM > Subject: [Elecraft] Re: in-box SO2R? > > >> >> On Apr 29, 2007, at 1:26 AM, Chris Page wrote: >> >>> Re Wayne's comment about SO2R, can you operate true SO2R with the K3, >>> ie listen on one band at the same time as you tranmit on another >>> band? >> >> You could certainly listen on one band and transmit on another, but >> the T-R circuitry would have to be activated on both receivers, >> blanking them during keying. >> >> Full duplex might be possible at very low power (I haven't tried it >> yet), but certainly not at full power. In-box SO2R would probably >> require very extensive shielding that would have completely blown our >> cost, size, and weight budgets. >> >> Also, interestingly, we talked to a lot of SO2R ops who said that >> in-box SO2R was not that great an idea. User interface issues get >> very tricky, and there are T-R problems. For example, if you were >> trying to switch between 40 and 20 meters, the low-pass filter relays >> would have to be switched every time you key the rig. While this can >> be done, I wouldn't recommend doing fast QSK this way. The LPF relays >> are pretty beefy! It's even more dicey if you're trying to switch the >> ATU network between the two bands at CW keying speeds. >> >> 73, >> Wayne >> >> >> --- >> >> http://www.elecraft.com >> >> _______________________________________________ >> 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 > > > --- http://www.elecraft.com _______________________________________________ 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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In reply to this post by David Cutter
I operate my K2 with an external amp but use the KAT100. Will the K3/10
and KAT3 combination be able to work with an external amp inline or are the connections available only internally? I realize there may be more advantages to the integrated K3/100 than with the K2+KPA100 but this mail thread is about sharing an amp between the K2 and the K3, and while we now know the KPA100 can't do this, I would like to find out if the K3/10+KAT3 can support a two-port box in the middle. 73, Leigh/WA5ZNU _______________________________________________ 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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Leigh,
The KAT3 is internal and very tightly coupled to the 10-W or 100-W stage. While you could in theory interpose an external amplifier between the 10-W stage and the KAT3, we haven't tried it, and it would require special firmware support. I really wouldn't recommend this. The KPA3 is a high-performance 160-6 m 100-W module with excellent heat sinking, monitoring circuitry, two fans, and its own circuit breaker. This results in very smooth high-power operation, while an ad-hoc solution external to the radio might not. We also don't plan to support the KAT100, for [very good] reasons I outlined in my earlier posting on the auxBus. This will be added to the FAQ. 73, Wayne N6KR On Apr 29, 2007, at 10:12 AM, Leigh L Klotz, Jr. wrote: > I operate my K2 with an external amp but use the KAT100. Will the > K3/10 and KAT3 combination be able to work with an external amp inline > or are the connections available only internally? > > I realize there may be more advantages to the integrated K3/100 than > with the K2+KPA100 but this mail thread is about sharing an amp > between the K2 and the K3, and while we now know the KPA100 can't do > this, I would like to find out if the K3/10+KAT3 can support a > two-port box in the middle. > > 73, > Leigh/WA5ZNU > > --- http://www.elecraft.com |
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