160M Receive and Transmit Antenna Switching help
Locked
 
|
I have a KX3 and KXPA100. I want to put up a receiving loop antenna for
160M and transmit with my short marconi 160M antenna. What do I need to do to accomplish this? Switching things the way they are now takes too long and too many operations so I pretty much gave up on the project. -- Jim K9TF ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: 160M Receive and Transmit Antenna Switching help
|
|
Hi there!
Rick N6RK gave a nice presentation at Pacificon a few years ago about low band receiving loops and it is online. Perhaps this will give you a few ideas: http://www.n6rk.com/loopantennas/pacificon.pdf 73, Byron N6NUL On Sat, Nov 22, 2014 at 10:59 AM, Jim GM <[hidden email]> wrote: > I have a KX3 and KXPA100. I want to put up a receiving loop antenna for > 160M and transmit with my short marconi 160M antenna. What do I need to do > to accomplish this? > > Switching things the way they are now takes too long and too many > operations so I pretty much gave up on the project. > > > -- > Jim K9TF > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > -- - Northern California Contest Club - CU in the Cal QSO Party 3-4 Oct 2015 - www.cqp.org ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: 160M Receive and Transmit Antenna Switching help
|
|
In reply to this post by Jim GM
Jim,
Since the KX3/KXPA100 combination has no RX ANT input, you will have to devise some kind of external T/R switching to connect the receiving loop during non-transmit times. There is a PA Keying output from the KXPA100 that you could use to activate the T/R switch for transmit times. If you use a relay, it must be fast enough to avoid hot-switching or you will be seeing the KXPA100 go into a fault condition. 73, Don W3FPR On 11/22/2014 1:59 PM, Jim GM wrote: > I have a KX3 and KXPA100. I want to put up a receiving loop antenna for > 160M and transmit with my short marconi 160M antenna. What do I need to do > to accomplish this? > > Switching things the way they are now takes too long and too many > operations so I pretty much gave up on the project. > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: 160M Receive and Transmit Antenna Switching help
|
|
Any RF horse race is a bad choice. I prefer to do the simple sequence switching. A single relay that is keyed by the PTT line with one set switching the loop off and the Tx antenna ON and the other set of NO contacts on that relay keys the KX3 and Amp. I built a little TR cast AL box that has the KX3 mike plugged into it and a short cable with the 4 conductor cable to the KX3. The box has the cable from each antenna and the plugged into it. I use a 12 VDC jumper into the box to supply the relay . Simple DPDT crystal can relay on a perf board is enough to handle a couple of hundred HF watts. The third RF cable goes the the output of the KXPA100. I love KISS,
Mel, K6KBE From: Don Wilhelm <[hidden email]> To: Jim GM <[hidden email]>; Elecraft <[hidden email]> Sent: Saturday, November 22, 2014 12:55 PM Subject: Re: [Elecraft] 160M Receive and Transmit Antenna Switching help Jim, Since the KX3/KXPA100 combination has no RX ANT input, you will have to devise some kind of external T/R switching to connect the receiving loop during non-transmit times. There is a PA Keying output from the KXPA100 that you could use to activate the T/R switch for transmit times. If you use a relay, it must be fast enough to avoid hot-switching or you will be seeing the KXPA100 go into a fault condition. 73, Don W3FPR On 11/22/2014 1:59 PM, Jim GM wrote: > I have a KX3 and KXPA100. I want to put up a receiving loop antenna for > 160M and transmit with my short marconi 160M antenna. What do I need to do > to accomplish this? > > Switching things the way they are now takes too long and too many > operations so I pretty much gave up on the project. > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: 160M Receive and Transmit Antenna Switching help
|
|
Mel and all,
That is certainly a way around the hot-switching problem, and works fine when you are using the microphone PTT switch - but does not work for QSK CW or VOX operation. There *are* relays and T/R switching devices that switch faster than the KX3/KXPA100 Key Out to the onset of RF time. Of course, a selection based on details such as relay pull-in and dropout times must be investigated, but are readily available in a study of the relay specifications. 73, Don W3FPR On 11/22/2014 4:34 PM, Mel Farrer via Elecraft wrote: > Any RF horse race is a bad choice. I prefer to do the simple sequence switching. A single relay that is keyed by the PTT line with one set switching the loop off and the Tx antenna ON and the other set of NO contacts on that relay keys the KX3 and Amp. I built a little TR cast AL box that has the KX3 mike plugged into it and a short cable with the 4 conductor cable to the KX3. The box has the cable from each antenna and the plugged into it. I use a 12 VDC jumper into the box to supply the relay . Simple DPDT crystal can relay on a perf board is enough to handle a couple of hundred HF watts. The third RF cable goes the the output of the KXPA100. I love KISS, > Mel, K6KBE > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: 160M Receive and Transmit Antenna Switching help
|
|
Correct Don,
He didn't indicate that type of operation so I centered on the simple approach. If I were going to do QSK or VOX, I would have designed it with PIN diode switching. Mel, K6KBE From: Don Wilhelm <[hidden email]> To: [hidden email] Sent: Saturday, November 22, 2014 2:01 PM Subject: Re: [Elecraft] 160M Receive and Transmit Antenna Switching help Mel and all, That is certainly a way around the hot-switching problem, and works fine when you are using the microphone PTT switch - but does not work for QSK CW or VOX operation. There *are* relays and T/R switching devices that switch faster than the KX3/KXPA100 Key Out to the onset of RF time. Of course, a selection based on details such as relay pull-in and dropout times must be investigated, but are readily available in a study of the relay specifications. 73, Don W3FPR On 11/22/2014 4:34 PM, Mel Farrer via Elecraft wrote: > Any RF horse race is a bad choice. I prefer to do the simple sequence switching. A single relay that is keyed by the PTT line with one set switching the loop off and the Tx antenna ON and the other set of NO contacts on that relay keys the KX3 and Amp. I built a little TR cast AL box that has the KX3 mike plugged into it and a short cable with the 4 conductor cable to the KX3. The box has the cable from each antenna and the plugged into it. I use a 12 VDC jumper into the box to supply the relay . Simple DPDT crystal can relay on a perf board is enough to handle a couple of hundred HF watts. The third RF cable goes the the output of the KXPA100. I love KISS, > Mel, K6KBE > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: 160M Receive and Transmit Antenna Switching help
|
|
In reply to this post by Jim GM
Here’s how I did it: www.ad5x.com/images/Articles/SeperateTRantswitch.pdf
Phil – AD5X ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
While on the subject of RX antennas: I have been working with my Shared Apex Loop Array= SALA: http://www.arraysolutions.com/Products/sal_array.htm I have the 20' version. While I am not yet finished optimizing, I am quite pleased. The array appears to work about like my 400' Beverages, but takes up only a 40X40' square. On the AM band, I can be aiming NE towards Asheville NC and receiving that station. By hitting the flip switch or rotating to SW, an Atlanta station comes in. F/B is best on low angle arrival stations. Worth looking into. Dale W4OP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: 160M Receive and Transmit Antenna Switching help
|
|
In reply to this post by Phil Salas
I like it.
Mel, K6KBE From: Phil & Debbie <[hidden email]> To: [hidden email] Sent: Saturday, November 22, 2014 3:57 PM Subject: Re: [Elecraft] 160M Receive and Transmit Antenna Switching help Here’s how I did it: www.ad5x.com/images/Articles/SeperateTRantswitch.pdf Phil – AD5X ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: 160M Receive and Transmit Antenna Switching help
|
|
In reply to this post by Phil Salas
Phil, How do you deal with the RF after HSEND drops as it does in the 706mkIIg, 7000, 7600, etc. in QSK (and potentially semi-break in)? That is, how are you preventing hot switching and potentially putting RF into the receive antenna and damaging it? 73, ... Joe, W4TV On 2014-11-22 6:57 PM, Phil & Debbie wrote: > Here’s how I did it: www.ad5x.com/images/Articles/SeperateTRantswitch.pdf > > Phil – AD5X > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: 160M Receive and Transmit Antenna Switching help
|
|
Hi Joe – I used semi break-in with the IC-706MKIIG. Just a tiny bit of drop-out delay eliminates the unkey hot-switching problem – but then you can’t be fully QSK. You can also make a simple mod to this switch to make it hang long enough to eliminate the problem. See:
www.ad5x.com/images/Articles/QSKDelay.pdf Phil – AD5X ---------------------- Phil,How do you deal with the RF after HSEND drops as it does in the706mkIIg, 7000, 7600, etc. in QSK (and potentially semi-break in)?That is, how are you preventing hot switching and potentially putting RF into the receive antenna and damaging it?73, ... Joe, W4TV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by Dale Parfitt-3
Dale,
Have you any idea how the Shared Apex Loop Array compares with the K9AY or Hi-Z 4 Square RX antennas? 73 Doug EI2CN -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of Dale Parfitt Sent: 23 November 2014 00:20 To: Phil & Debbie; [hidden email] Subject: [Elecraft] RX Antennas While on the subject of RX antennas: I have been working with my Shared Apex Loop Array= SALA: http://www.arraysolutions.com/Products/sal_array.htm I have the 20' version. While I am not yet finished optimizing, I am quite pleased. The array appears to work about like my 400' Beverages, but takes up only a 40X40' square. On the AM band, I can be aiming NE towards Asheville NC and receiving that station. By hitting the flip switch or rotating to SW, an Atlanta station comes in. F/B is best on low angle arrival stations. Worth looking into. Dale W4OP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
I just posted a similar question on the Topband and Ham Antenna reflectors.
I am considering the same antennas for my QTH and adding a second receiver to the K3. I find that I am RX limited compared to signal reports that I get that are not just the 59 contest mode. So for me this will be a significant investment with the receive system and extra receiver so I only want to do it once and want to be sure that I make the best choice I can. The only thing I know so far is that I have had personal interaction with persons who have used the K9AY and HI-Z and the HI-Z is consensus winner in this comparison. Thanks Don ~73 Don KD8NNU 2014 3905CC Top Gun :-) -.- -.. ---.. -. -. ..- -----Original Message----- From: Doug Turnbull Sent: Sunday, November 23, 2014 4:53 AM To: 'Dale Parfitt' ; 'Phil & Debbie' ; [hidden email] Subject: Re: [Elecraft] RX Antennas Dale, Have you any idea how the Shared Apex Loop Array compares with the K9AY or Hi-Z 4 Square RX antennas? 73 Doug EI2CN -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of Dale Parfitt Sent: 23 November 2014 00:20 To: Phil & Debbie; [hidden email] Subject: [Elecraft] RX Antennas While on the subject of RX antennas: I have been working with my Shared Apex Loop Array= SALA: http://www.arraysolutions.com/Products/sal_array.htm I have the 20' version. While I am not yet finished optimizing, I am quite pleased. The array appears to work about like my 400' Beverages, but takes up only a 40X40' square. On the AM band, I can be aiming NE towards Asheville NC and receiving that station. By hitting the flip switch or rotating to SW, an Atlanta station comes in. F/B is best on low angle arrival stations. Worth looking into. Dale W4OP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by Doug Turnbull
Hi Doug,
I have talked with several hams using the K9AY. Apparently it is somewhat ground dependent, and thus results are all over the board. I don't have any level ground here in the mountains. After some discussion, I was discouraged from trying a Hi Z or 4 Square. My Beverages work wonderfully, but they are in the woods and tree limbs are constantly bringing them down. I have a rotatable Flag antenna but I must say, so far the SALA is almost as good as the Beverages and a lot better than the Flag. Dale W4OP ----- Original Message ----- From: "Doug Turnbull" <[hidden email]> To: "'Dale Parfitt'" <[hidden email]>; "'Phil & Debbie'" <[hidden email]>; <[hidden email]> Sent: Sunday, November 23, 2014 4:53 AM Subject: RE: [Elecraft] RX Antennas > Dale, > Have you any idea how the Shared Apex Loop Array compares with the K9AY > or Hi-Z 4 Square RX antennas? > > 73 Doug EI2CN > > -----Original Message----- > From: Elecraft [mailto:[hidden email]] On Behalf Of Dale > Parfitt > Sent: 23 November 2014 00:20 > To: Phil & Debbie; [hidden email] > Subject: [Elecraft] RX Antennas > > > While on the subject of RX antennas: > > I have been working with my Shared Apex Loop Array= SALA: > http://www.arraysolutions.com/Products/sal_array.htm > I have the 20' version. > > While I am not yet finished optimizing, I am quite pleased. The array > appears to work about like my 400' Beverages, but takes up only a 40X40' > square. > On the AM band, I can be aiming NE towards Asheville NC and receiving that > station. By hitting the flip switch or rotating to SW, an Atlanta station > comes in. F/B is best on low angle arrival stations. Worth looking into. > > Dale W4OP > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
> After some discussion, I was discouraged from trying a Hi Z or 4 > Square. Based on theoretical considerations, a 4 element square array of Hi Z elements should be generally equivalent to a SALA of the same "footprint". Both are effectively three element endfire arrays. The SALA will have a bit more high angle response due to the sloping wires while the Hi Z "4 square" will have a bit poorer broadside rejection due to the spread "center" element. 73, ... Joe, W4TV On 2014-11-23 8:52 AM, Dale Parfitt wrote: > Hi Doug, > I have talked with several hams using the K9AY. Apparently it is > somewhat ground dependent, and thus results are all over the board. I > don't have any level ground here in the mountains. After some > discussion, I was discouraged from trying a Hi Z or 4 Square. My > Beverages work wonderfully, but they are in the woods and tree limbs are > constantly bringing them down. I have a rotatable Flag antenna but I > must say, so far the SALA is almost as good as the Beverages and a lot > better than the Flag. > > Dale W4OP > ----- Original Message ----- From: "Doug Turnbull" <[hidden email]> > To: "'Dale Parfitt'" <[hidden email]>; "'Phil & Debbie'" > <[hidden email]>; <[hidden email]> > Sent: Sunday, November 23, 2014 4:53 AM > Subject: RE: [Elecraft] RX Antennas > > >> Dale, >> Have you any idea how the Shared Apex Loop Array compares with the >> K9AY >> or Hi-Z 4 Square RX antennas? >> >> 73 Doug EI2CN >> >> -----Original Message----- >> From: Elecraft [mailto:[hidden email]] On Behalf Of >> Dale >> Parfitt >> Sent: 23 November 2014 00:20 >> To: Phil & Debbie; [hidden email] >> Subject: [Elecraft] RX Antennas >> >> >> While on the subject of RX antennas: >> >> I have been working with my Shared Apex Loop Array= SALA: >> http://www.arraysolutions.com/Products/sal_array.htm >> I have the 20' version. >> >> While I am not yet finished optimizing, I am quite pleased. The array >> appears to work about like my 400' Beverages, but takes up only a 40X40' >> square. >> On the AM band, I can be aiming NE towards Asheville NC and receiving >> that >> station. By hitting the flip switch or rotating to SW, an Atlanta station >> comes in. F/B is best on low angle arrival stations. Worth looking into. >> >> Dale W4OP >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [hidden email] >> >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by Doug Turnbull
On Sun,11/23/2014 1:53 AM, Doug Turnbull wrote:
> Have you any idea how the Shared Apex Loop Array compares with the K9AY > or Hi-Z 4 Square RX antennas? W3LPL made an excellent presentation on this topic to K3LR's Contest University at Dayton this spring. Frank hangs out on the Tower Talk reflector. You might want to ask that question over there. 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by Doug Turnbull
On Sun,11/23/2014 1:53 AM, Doug Turnbull wrote:
> Have you any idea how the Shared Apex Loop Array compares with the K9AY > or Hi-Z 4 Square RX antennas? Here Frank's talk as a Power Point file. https://www.google.com/search?q=w3lpl+antennas&rlz=1C1GGGE___US594US594&oq=w3lpl+&aqs=chrome.4.69i57j0l5.11558j0j4&sourceid=chrome&es_sm=93&ie=UTF-8 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by Dale Parfitt-3
On Sat,11/22/2014 4:19 PM, Dale Parfitt wrote:
> > While on the subject of RX antennas: > > I have been working with my Shared Apex Loop Array= SALA: > http://www.arraysolutions.com/Products/sal_array.htm > I have the 20' version. > > While I am not yet finished optimizing, I am quite pleased. The array > appears to work about like my 400' Beverages, but takes up only a > 40X40' square. > On the AM band, I can be aiming NE towards Asheville NC and receiving > that station. By hitting the flip switch or rotating to SW, an Atlanta > station comes in. F/B is best on low angle arrival stations. Worth > looking into. Here's the presentation that the developer of this product made to the Dayton Antenna Forum this spring. https://www.youtube.com/watch?v=i46kR0pynFw pdf of slides is here. http://www.kkn.net/dayton2014/dayton-2014-antenna-forum.html Also a presentation by K7TJR of his system. 73 , Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
Are there any construction articles available ? I mean one from which one
might "roll his own" ?? Tnx, Dick, W1KSZ On 11/23/2014 10:52 AM, Jim Brown wrote: > On Sat,11/22/2014 4:19 PM, Dale Parfitt wrote: >> >> While on the subject of RX antennas: >> >> I have been working with my Shared Apex Loop Array= SALA: >> http://www.arraysolutions.com/Products/sal_array.htm >> I have the 20' version. >> >> While I am not yet finished optimizing, I am quite pleased. The array >> appears to work about like my 400' Beverages, but takes up only a >> 40X40' square. >> On the AM band, I can be aiming NE towards Asheville NC and receiving >> that station. By hitting the flip switch or rotating to SW, an >> Atlanta station comes in. F/B is best on low angle arrival stations. >> Worth looking into. > > Here's the presentation that the developer of this product made to the > Dayton Antenna Forum this spring. > > https://www.youtube.com/watch?v=i46kR0pynFw > > pdf of slides is here. > > http://www.kkn.net/dayton2014/dayton-2014-antenna-forum.html > > Also a presentation by K7TJR of his system. > > 73 , Jim K9YC > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by Jim Brown-10
Before investing in a SAL you may want to look at the "new" design that the
designer had been working on, better specs and uses a lot of the same hardware etc. uses square loops instead of triangles, info and schematic found on the SAL user groups site. 73 Merv K9FD/KH6 > On Sun,11/23/2014 1:53 AM, Doug Turnbull wrote: >> Have you any idea how the Shared Apex Loop Array compares with the >> K9AY >> or Hi-Z 4 Square RX antennas? > > Here Frank's talk as a Power Point file. > > https://www.google.com/search?q=w3lpl+antennas&rlz=1C1GGGE___US594US594&oq=w3lpl+&aqs=chrome.4.69i57j0l5.11558j0j4&sourceid=chrome&es_sm=93&ie=UTF-8 > > > 73, Jim K9YC > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > . > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
«
Return to Elecraft
|
1 view|%1 views
| Free forum by Nabble | Edit this page |