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PALSTAR AT1KP Meter 1200 Watt Antenna Tuner
Hi there,
Anyone have or used one of these antenna tuners? Wondering how they perform, have read the reviews on eham ect, just looking for other opinions. TIA Richard |
#2
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PALSTAR AT1KP Meter 1200 Watt Antenna Tuner
Richard,
Considering some of the reviews I've seen on various forums, the one thing those reviews proves is that they must work. How well they work just depends on how close to the tuner's limits any particular antenna falls. 'Size' is one consideration that isn't thought of very often. Bigger usually means larger limits cuz all those thingys inside are larger, which is good to some ridiculous point. Deciding where 'ridiculous' starts/stops depends on you to a large extent. It has to do with the antennas you have/want/are allowed, and the size of your bank account. Is it the mostest best thing on the market? Good question, and another one of those 'depends' thingys. (Mine is the bestest tuner ever made. It isn't produced anymore. It is not for sale, wish I had another one! Can do some really 'weird' antennas. Ain't saying what it is so the price will be cheaper when I find another one.) - 'Doc [Large doses of 'B.S.' are always a part of my responses. Deciding which is what is your responsibility. Hows that for a 'CYA'?] |
#3
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PALSTAR AT1KP Meter 1200 Watt Antenna Tuner
Richard,
My Palstar AT1KP arrived this morning, so early days yet. What I can say about it is that the build quality inside and out looks excellent. I have only run 110 watts through it and it has tuned my 40m Centre Fed Dipole cut for 40 meters down to 1.1: from 1.8 - 6 meters with ease. Hope this helps. 73 Andy wrote in message ... Richard, Considering some of the reviews I've seen on various forums, the one thing those reviews proves is that they must work. How well they work just depends on how close to the tuner's limits any particular antenna falls. 'Size' is one consideration that isn't thought of very often. Bigger usually means larger limits cuz all those thingys inside are larger, which is good to some ridiculous point. Deciding where 'ridiculous' starts/stops depends on you to a large extent. It has to do with the antennas you have/want/are allowed, and the size of your bank account. Is it the mostest best thing on the market? Good question, and another one of those 'depends' thingys. (Mine is the bestest tuner ever made. It isn't produced anymore. It is not for sale, wish I had another one! Can do some really 'weird' antennas. Ain't saying what it is so the price will be cheaper when I find another one.) - 'Doc [Large doses of 'B.S.' are always a part of my responses. Deciding which is what is your responsibility. Hows that for a 'CYA'?] |
#4
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PALSTAR AT1KP Meter 1200 Watt Antenna Tuner
Hi Richard,
Just an update for you on my AT1KP tuner. I am only running 110 watts through the tuner due to not owning an Amplifier. I have tried it out on an End Fed wire WITH an earth ground rod that has a very poor ground and also an End Fed Zep. It still tunes these wires down to 1.1:1 from 160 - 6 Meters with ease. I am very pleased with it and I'm glade I purchased the AT1KP. Hope this helps. 73 Andy "Andy" wrote in message ... Richard, My Palstar AT1KP arrived this morning, so early days yet. What I can say about it is that the build quality inside and out looks excellent. I have only run 110 watts through it and it has tuned my 40m Centre Fed Dipole cut for 40 meters down to 1.1: from 1.8 - 6 meters with ease. Hope this helps. 73 Andy wrote in message ... Richard, Considering some of the reviews I've seen on various forums, the one thing those reviews proves is that they must work. How well they work just depends on how close to the tuner's limits any particular antenna falls. 'Size' is one consideration that isn't thought of very often. Bigger usually means larger limits cuz all those thingys inside are larger, which is good to some ridiculous point. Deciding where 'ridiculous' starts/stops depends on you to a large extent. It has to do with the antennas you have/want/are allowed, and the size of your bank account. Is it the mostest best thing on the market? Good question, and another one of those 'depends' thingys. (Mine is the bestest tuner ever made. It isn't produced anymore. It is not for sale, wish I had another one! Can do some really 'weird' antennas. Ain't saying what it is so the price will be cheaper when I find another one.) - 'Doc [Large doses of 'B.S.' are always a part of my responses. Deciding which is what is your responsibility. Hows that for a 'CYA'?] |
#5
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PALSTAR AT1KP Meter 1200 Watt Antenna Tuner
Andy, is your endfed wire the one in your other thread of the 8th June
(ie the 80 Meter End Fed, fed with coax at the far end)? If so, presumably the tuner is at the shack end. Or are you feeding it from the shack end. In message , Andy writes Hi Richard, Just an update for you on my AT1KP tuner. I am only running 110 watts through the tuner due to not owning an Amplifier. I have tried it out on an End Fed wire WITH an earth ground rod that has a very poor ground and also an End Fed Zep. It still tunes these wires down to 1.1:1 from 160 - 6 Meters with ease. I am very pleased with it and I'm glade I purchased the AT1KP. Hope this helps. 73 Andy -- Ian |
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PALSTAR AT1KP Meter 1200 Watt Antenna Tuner
Hi Ian,
Yes its the same. The tuner is at the shack end (house) and I'm feeding the antenna with 50 Ohm RG-58 C/U coax at the far end of the garden. If I can get it working well I will replace it with some RG-213 that I have here. I put it back up yesterday and started experimenting again. The End Fed at the moment has 15 feet of 300 Ohm slotted ribbon feeder. This is all I had left spare. One side is connected to the wire antenna and the other side left, not connected. The coax is connected to the 300 Ohm at the bottom and the braid side is now connected to the unconnected side of the 300 Ohm and also to the earth ground rod. On 80 the receive is up 2-4 S points compared with the 40m coax Centre Fed Dipole. I have not had chance to get any actual reports on 80 yet. Maybe this weekend. 73 Andy "Ian Jackson" wrote in message ... Andy, is your endfed wire the one in your other thread of the 8th June (ie the 80 Meter End Fed, fed with coax at the far end)? If so, presumably the tuner is at the shack end. Or are you feeding it from the shack end. In message , Andy writes Hi Richard, Just an update for you on my AT1KP tuner. I am only running 110 watts through the tuner due to not owning an Amplifier. I have tried it out on an End Fed wire WITH an earth ground rod that has a very poor ground and also an End Fed Zep. It still tunes these wires down to 1.1:1 from 160 - 6 Meters with ease. I am very pleased with it and I'm glade I purchased the AT1KP. Hope this helps. 73 Andy -- Ian |
#7
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PALSTAR AT1KP Meter 1200 Watt Antenna Tuner
In message , Andy
writes "Ian Jackson" wrote in message ... Andy, is your endfed wire the one in your other thread of the 8th June (ie the 80 Meter End Fed, fed with coax at the far end)? If so, presumably the tuner is at the shack end. Or are you feeding it from the shack end. In message , Andy writes -- Hi Ian, Yes its the same. The tuner is at the shack end (house) and I'm feeding the antenna with 50 Ohm RG-58 C/U coax at the far end of the garden. If I can get it working well I will replace it with some RG-213 that I have here. I put it back up yesterday and started experimenting again. The End Fed at the moment has 15 feet of 300 Ohm slotted ribbon feeder. This is all I had left spare. One side is connected to the wire antenna and the other side left, not connected. The coax is connected to the 300 Ohm at the bottom and the braid side is now connected to the unconnected side of the 300 Ohm and also to the earth ground rod. On 80 the receive is up 2-4 S points compared with the 40m coax Centre Fed Dipole. I have not had chance to get any actual reports on 80 yet. Maybe this weekend. 73 Andy OK, Andy. Noted. I don't know if you will really improve things by using the 15 foot of 300 ohm feeder. It's a sort of a zepp, but with one side of the twin feeder earthed. I would try disconnecting the earthed ('unconnected') side from earth / coax braid. You can either leave it floating, or connect it to the coax inner. It will then be approximately a quarterwave on 20m, fed in parallel with the long wire. Don't read too much into the excellent SWR you're getting with the tuner. That's what the TX sees, but the tuner can't affect the SWR on the aerial feeder. If the coax SWR is sky high (and it can be if the impedance at aerial feed point is high), the coax losses will be much more that you would get compared with when it is matched correctly. You only get away with it by using the lowest-loss you can find, and keeping the coax as short as possible. I'm not surprised that 80m on the endfed is a bit better than the 40m dipole. But what's 40m like on the endfed? That's when the feed impedance (and coax SWR) will be very high, and where the RG-213 might perform better noticeably better than the RG-58. As I think I said before, although I am an advocate of simply using coax (regardless), after all these years I am considering in investing in something like a SG230 remote tuner for the far end of the coax. -- Ian |
#8
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PALSTAR AT1KP Meter 1200 Watt Antenna Tuner
Ian,
I'll have to do some experimenting with the 300 Ohm feeder and see what happens. The End Fed on 40m is very poor indeed. I would say unusable like it is. The End Fed wire at the moment is resonate on 2. 682 MHz. The funny thing is that when I cut the wire to bring the End Fed to resonate on 80m, no matter how much wire I cut off it doesn't really move from the 2.682 MHz. I have tried this with and with out the ribbon feeder being in place and with coax connected direct and the braid connected to the earth rod. What would cause this? I have no problem using the Analyser with my mobile and centre fed dipoles. 73 Andy "Ian Jackson" wrote in message ... In message , Andy writes "Ian Jackson" wrote in message ... Andy, is your endfed wire the one in your other thread of the 8th June (ie the 80 Meter End Fed, fed with coax at the far end)? If so, presumably the tuner is at the shack end. Or are you feeding it from the shack end. In message , Andy writes -- Hi Ian, Yes its the same. The tuner is at the shack end (house) and I'm feeding the antenna with 50 Ohm RG-58 C/U coax at the far end of the garden. If I can get it working well I will replace it with some RG-213 that I have here. I put it back up yesterday and started experimenting again. The End Fed at the moment has 15 feet of 300 Ohm slotted ribbon feeder. This is all I had left spare. One side is connected to the wire antenna and the other side left, not connected. The coax is connected to the 300 Ohm at the bottom and the braid side is now connected to the unconnected side of the 300 Ohm and also to the earth ground rod. On 80 the receive is up 2-4 S points compared with the 40m coax Centre Fed Dipole. I have not had chance to get any actual reports on 80 yet. Maybe this weekend. 73 Andy OK, Andy. Noted. I don't know if you will really improve things by using the 15 foot of 300 ohm feeder. It's a sort of a zepp, but with one side of the twin feeder earthed. I would try disconnecting the earthed ('unconnected') side from earth / coax braid. You can either leave it floating, or connect it to the coax inner. It will then be approximately a quarterwave on 20m, fed in parallel with the long wire. Don't read too much into the excellent SWR you're getting with the tuner. That's what the TX sees, but the tuner can't affect the SWR on the aerial feeder. If the coax SWR is sky high (and it can be if the impedance at aerial feed point is high), the coax losses will be much more that you would get compared with when it is matched correctly. You only get away with it by using the lowest-loss you can find, and keeping the coax as short as possible. I'm not surprised that 80m on the endfed is a bit better than the 40m dipole. But what's 40m like on the endfed? That's when the feed impedance (and coax SWR) will be very high, and where the RG-213 might perform better noticeably better than the RG-58. As I think I said before, although I am an advocate of simply using coax (regardless), after all these years I am considering in investing in something like a SG230 remote tuner for the far end of the coax. -- Ian |
#9
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PALSTAR AT1KP Meter 1200 Watt Antenna Tuner
Andy wrote:
Ian, I'll have to do some experimenting with the 300 Ohm feeder and see what happens. The End Fed on 40m is very poor indeed. I would say unusable like it is. The End Fed wire at the moment is resonate on 2. 682 MHz. The funny thing is that when I cut the wire to bring the End Fed to resonate on 80m, no matter how much wire I cut off it doesn't really move from the 2.682 MHz. I have tried this with and with out the ribbon feeder being in place and with coax connected direct and the braid connected to the earth rod. What would cause this? I have no problem using the Analyser with my mobile and centre fed dipoles. 73 Andy "Ian Jackson" wrote in message ... In message , Andy writes "Ian Jackson" wrote in message ... Andy, is your endfed wire the one in your other thread of the 8th June (ie the 80 Meter End Fed, fed with coax at the far end)? If so, presumably the tuner is at the shack end. Or are you feeding it from the shack end. In message , Andy writes -- Hi Ian, Yes its the same. The tuner is at the shack end (house) and I'm feeding the antenna with 50 Ohm RG-58 C/U coax at the far end of the garden. If I can get it working well I will replace it with some RG-213 that I have here. I put it back up yesterday and started experimenting again. The End Fed at the moment has 15 feet of 300 Ohm slotted ribbon feeder. This is all I had left spare. One side is connected to the wire antenna and the other side left, not connected. The coax is connected to the 300 Ohm at the bottom and the braid side is now connected to the unconnected side of the 300 Ohm and also to the earth ground rod. On 80 the receive is up 2-4 S points compared with the 40m coax Centre Fed Dipole. I have not had chance to get any actual reports on 80 yet. Maybe this weekend. 73 Andy OK, Andy. Noted. I don't know if you will really improve things by using the 15 foot of 300 ohm feeder. It's a sort of a zepp, but with one side of the twin feeder earthed. I would try disconnecting the earthed ('unconnected') side from earth / coax braid. You can either leave it floating, or connect it to the coax inner. It will then be approximately a quarterwave on 20m, fed in parallel with the long wire. Don't read too much into the excellent SWR you're getting with the tuner. That's what the TX sees, but the tuner can't affect the SWR on the aerial feeder. If the coax SWR is sky high (and it can be if the impedance at aerial feed point is high), the coax losses will be much more that you would get compared with when it is matched correctly. You only get away with it by using the lowest-loss you can find, and keeping the coax as short as possible. I'm not surprised that 80m on the endfed is a bit better than the 40m dipole. But what's 40m like on the endfed? That's when the feed impedance (and coax SWR) will be very high, and where the RG-213 might perform better noticeably better than the RG-58. As I think I said before, although I am an advocate of simply using coax (regardless), after all these years I am considering in investing in something like a SG230 remote tuner for the far end of the coax. -- Ian adding a suitably cut wire counterpoise at +% for each band should certainly assist things . |
#10
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PALSTAR AT1KP Meter 1200 Watt Antenna Tuner
In message , atec77
writes Andy wrote: "Ian Jackson" wrote in message ... In message , Andy writes "Ian Jackson" wrote in message ... Andy, is your endfed wire the one in your other thread of the 8th June (ie the 80 Meter End Fed, fed with coax at the far end)? If so, presumably the tuner is at the shack end. Or are you feeding it from the shack end. In message , Andy writes -- Hi Ian, Yes its the same. The tuner is at the shack end (house) and I'm feeding the antenna with 50 Ohm RG-58 C/U coax at the far end of the garden. If I can get it working well I will replace it with some RG-213 that I have here. I put it back up yesterday and started experimenting again. The End Fed at the moment has 15 feet of 300 Ohm slotted ribbon feeder. This is all I had left spare. One side is connected to the wire antenna and the other side left, not connected. The coax is connected to the 300 Ohm at the bottom and the braid side is now connected to the unconnected side of the 300 Ohm and also to the earth ground rod. On 80 the receive is up 2-4 S points compared with the 40m coax Centre Fed Dipole. I have not had chance to get any actual reports on 80 yet. Maybe this weekend. 73 Andy OK, Andy. Noted. I don't know if you will really improve things by using the 15 foot of 300 ohm feeder. It's a sort of a zepp, but with one side of the feeder earthed. I would try disconnecting the earthed ('unconnected') side from earth / coax braid. You can either leave it floating, or connect it to the coax inner. It will then be approximately a quarterwave on 20m, fed in parallel with the long wire. Don't read too much into the excellent SWR you're getting with the tuner. That's what the TX sees, but the tuner can't affect the SWR on the aerial feeder. If the coax SWR is sky high (and it can be if the impedance at aerial feed point is high), the coax losses will be much more that you would get compared with when it is matched correctly. You only get away with it by using the lowest-loss you can find, and keeping the coax as short as possible. I'm not surprised that 80m on the endfed is a bit better than the 40m dipole. But what's 40m like on the endfed? That's when the feed impedance (and coax SWR) will be very high, and where the RG-213 might perform better noticeably better than the RG-58. As I think I said before, although I am an advocate of simply using coax (regardless), after all these years I am considering in investing in something like a SG230 remote tuner for the far end of the coax. -- Ian Ian, I'll have to do some experimenting with the 300 Ohm feeder and see what happens. The End Fed on 40m is very poor indeed. I would say unusable like it is. The End Fed wire at the moment is resonate on 2. 682 MHz. The funny thing is that when I cut the wire to bring the End Fed to resonate on 80m, no matter how much wire I cut off it doesn't really move from the 2.682 MHz. I have tried this with and with out the ribbon feeder being in place and with coax connected direct and the braid connected to the earth rod. What would cause this? I have no problem using the Analyser with my mobile and centre fed dipoles. 73 Andy adding a suitably cut wire counterpoise at +% for each band should certainly assist things . I rather think that Andy can't add counterpoises. A decent earthing system should work (although additional counterpoises certainly won't do any harm). Re the 2.682MHz resonance, this may be because the coax is completely mismatched at lots of frequencies, and what you're seeing this is more-or-less a spurious resonance of the coax itself. Do you still get it with the wire completely disconnected? Even with centre-fed dipoles, you often get some very unexpected resonances way off frequency (especially of you are doing a wideband frequency sweep of the return loss / SWR). As I said previously, persuading an approximate halfwave endfed (which is what you have on 40m) to work with a coax feed is certainly not ideal, but you can usually get it to work fairly well (with all the provisos already discussed). My setup here is almost twice the size of what you have, so the wire feed impedance will be low on 160m and I high on 80m and 40m. 80m (corresponding to your 40m) is certainly lively enough. On 40m, the performance does not seem to be unduly poor compared with the signal reports swapped between others on the band. So, Andy, I simply don't know why your 40m is so poor. Have you tried (temporarily) reducing the length to around 33 feet, so that it is a quarterwave on 40m? This should give a reasonable match for your coax (at least, nothing you can't tune out back in the shack). If this is more lively than the 64 feet, maybe you can try two wires in parallel. This can be discussed later if the 33 feet shows promise. If a multiband (and possibly compromise) aerial doesn't work well, it's a good idea to try something simple which you know SHOULD work. The problem may lie elsewhere. Finally, can I ask you to follow the standard practice of bottom posting! Cheers... -- Ian |
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