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It's good to see that you worked the problem out yourself. I'm amazed that
your signal made it through the cavities of the local repeater. Sound like the owner needs to do some duplexer tuning or get another set. Congratulations on solving your problem. Ken KC4IH "Ken Bessler" wrote in message news:tVSod.2461$3I.1347@okepread01... "nitespark" wrote in message news:ymQod.4883$1t.4522@lakeread07... Ken Bessler wrote: All these tests were done with a known good antenna & new CQ-102 coax. Rig is a 1 year old Kenwood TM-271A. All tests were done at an indicated 68 w which is about normal for hi power from this rig. I'll refrain from using the Pratt repeater until this is fixed. My question is this - have I done enough to assume that the problem is not on my end? Sending in my rig for service monitor testing would be difficult & a genuine pain in the neck. Ken KG0WX The only way to determine your rigs frequency would be to put it on a service monitor or at the least, a frequency counter. I have 3 service monitors and would be glad to check your rig free of charge if you pay postage both ways. My test equipment is calibrated to an HP GPS frequency standard so I can give you a pretty accurate measurement. 73 Andy WD4KDN I resolved the question with testing. I had 5 other stations all over the county try the same trick - I.E. transmitting 15kc below the input to the N0KTA repeater. All 5 were able to make the repeater key up easily. That plus the fact that my TM-271A comes standard with a TXCO and the simplex tests I've done has convinced me that it's NOT my rig. I contacted N0KTA but haven't gotten an answer yet. Thanks to all for the advice & help. 73's de Ken KG0WX |
It's good to see that you worked the problem out yourself. I'm amazed that
your signal made it through the cavities of the local repeater. Sound like the owner needs to do some duplexer tuning or get another set. Congratulations on solving your problem. Ken KC4IH "Ken Bessler" wrote in message news:tVSod.2461$3I.1347@okepread01... "nitespark" wrote in message news:ymQod.4883$1t.4522@lakeread07... Ken Bessler wrote: All these tests were done with a known good antenna & new CQ-102 coax. Rig is a 1 year old Kenwood TM-271A. All tests were done at an indicated 68 w which is about normal for hi power from this rig. I'll refrain from using the Pratt repeater until this is fixed. My question is this - have I done enough to assume that the problem is not on my end? Sending in my rig for service monitor testing would be difficult & a genuine pain in the neck. Ken KG0WX The only way to determine your rigs frequency would be to put it on a service monitor or at the least, a frequency counter. I have 3 service monitors and would be glad to check your rig free of charge if you pay postage both ways. My test equipment is calibrated to an HP GPS frequency standard so I can give you a pretty accurate measurement. 73 Andy WD4KDN I resolved the question with testing. I had 5 other stations all over the county try the same trick - I.E. transmitting 15kc below the input to the N0KTA repeater. All 5 were able to make the repeater key up easily. That plus the fact that my TM-271A comes standard with a TXCO and the simplex tests I've done has convinced me that it's NOT my rig. I contacted N0KTA but haven't gotten an answer yet. Thanks to all for the advice & help. 73's de Ken KG0WX |
"Ken Bessler" wrote in message news:rYHod.1792$3I.1128@okepread01... I live about 15 miles from the N0KTA 146.715 repeater. I like to talk to the 146.700 repeater in Pratt, KS (about 95 miles). Problem is that when I transmit on 146.100 for the Pratt machine, I inadvertantly also key up the 146.715 machine. At first I suspected my transmitter was off freq so I tested 3 other repeaters - 145.370 at 1/2 mile away, 146.895 at 1 mile away and 146.850 at 3 miles away. On all three tests, I could key up those machines as long as I was +/- LESS than 15 khz from the correct input freq. On all 3 when I went to the next channel (15 khz spacing) up or down, I could not key up the machine. Chances are there is nothing wrong with either system. Operating 15 kcs is really too close for repeaters. Many of them are converted comercial rigs and the selectivity is not that good in many cases as they were designed for 30 KC spacings. When the repeater keys up and you are 15 kc away from it , will it break the squelch of your rig ? |
"Ken Bessler" wrote in message news:rYHod.1792$3I.1128@okepread01... I live about 15 miles from the N0KTA 146.715 repeater. I like to talk to the 146.700 repeater in Pratt, KS (about 95 miles). Problem is that when I transmit on 146.100 for the Pratt machine, I inadvertantly also key up the 146.715 machine. At first I suspected my transmitter was off freq so I tested 3 other repeaters - 145.370 at 1/2 mile away, 146.895 at 1 mile away and 146.850 at 3 miles away. On all three tests, I could key up those machines as long as I was +/- LESS than 15 khz from the correct input freq. On all 3 when I went to the next channel (15 khz spacing) up or down, I could not key up the machine. Chances are there is nothing wrong with either system. Operating 15 kcs is really too close for repeaters. Many of them are converted comercial rigs and the selectivity is not that good in many cases as they were designed for 30 KC spacings. When the repeater keys up and you are 15 kc away from it , will it break the squelch of your rig ? |
"Ken Bessler" wrote in message news:rYHod.1792$3I.1128@okepread01... I live about 15 miles from the N0KTA 146.715 repeater. I like to talk to the 146.700 repeater in Pratt, KS (about 95 miles). Problem is that when I transmit on 146.100 for the Pratt machine, I inadvertantly also key up the 146.715 machine. At first I suspected my transmitter was off freq so I tested 3 other repeaters - 145.370 at 1/2 mile away, 146.895 at 1 mile away and 146.850 at 3 miles away. On all three tests, I could key up those machines as long as I was +/- LESS than 15 khz from the correct input freq. On all 3 when I went to the next channel (15 khz spacing) up or down, I could not key up the machine. Chances are there is nothing wrong with either system. Operating 15 kcs is really too close for repeaters. Many of them are converted comercial rigs and the selectivity is not that good in many cases as they were designed for 30 KC spacings. When the repeater keys up and you are 15 kc away from it , will it break the squelch of your rig ? |
Learn how duplexers work before you open your mouth and say something wrong.
They do not have very much selectivity for very near frequencies. That is while they have notches around 80 to 120 db to keep the receiver and transmiters seperated, the first 100 kc or more has only a few db of selectivity. "Photoman" wrote in message ... It's good to see that you worked the problem out yourself. I'm amazed that your signal made it through the cavities of the local repeater. Sound like the owner needs to do some duplexer tuning or get another set. Congratulations on solving your problem. Ken KC4IH "Ken Bessler" wrote in message news:tVSod.2461$3I.1347@okepread01... "nitespark" wrote in message news:ymQod.4883$1t.4522@lakeread07... Ken Bessler wrote: All these tests were done with a known good antenna & new CQ-102 coax. Rig is a 1 year old Kenwood TM-271A. All tests were done at an indicated 68 w which is about normal for hi power from this rig. I'll refrain from using the Pratt repeater until this is fixed. My question is this - have I done enough to assume that the problem is not on my end? Sending in my rig for service monitor testing would be difficult & a genuine pain in the neck. Ken KG0WX The only way to determine your rigs frequency would be to put it on a service monitor or at the least, a frequency counter. I have 3 service monitors and would be glad to check your rig free of charge if you pay postage both ways. My test equipment is calibrated to an HP GPS frequency standard so I can give you a pretty accurate measurement. 73 Andy WD4KDN I resolved the question with testing. I had 5 other stations all over the county try the same trick - I.E. transmitting 15kc below the input to the N0KTA repeater. All 5 were able to make the repeater key up easily. That plus the fact that my TM-271A comes standard with a TXCO and the simplex tests I've done has convinced me that it's NOT my rig. I contacted N0KTA but haven't gotten an answer yet. Thanks to all for the advice & help. 73's de Ken KG0WX |
Learn how duplexers work before you open your mouth and say something wrong.
They do not have very much selectivity for very near frequencies. That is while they have notches around 80 to 120 db to keep the receiver and transmiters seperated, the first 100 kc or more has only a few db of selectivity. "Photoman" wrote in message ... It's good to see that you worked the problem out yourself. I'm amazed that your signal made it through the cavities of the local repeater. Sound like the owner needs to do some duplexer tuning or get another set. Congratulations on solving your problem. Ken KC4IH "Ken Bessler" wrote in message news:tVSod.2461$3I.1347@okepread01... "nitespark" wrote in message news:ymQod.4883$1t.4522@lakeread07... Ken Bessler wrote: All these tests were done with a known good antenna & new CQ-102 coax. Rig is a 1 year old Kenwood TM-271A. All tests were done at an indicated 68 w which is about normal for hi power from this rig. I'll refrain from using the Pratt repeater until this is fixed. My question is this - have I done enough to assume that the problem is not on my end? Sending in my rig for service monitor testing would be difficult & a genuine pain in the neck. Ken KG0WX The only way to determine your rigs frequency would be to put it on a service monitor or at the least, a frequency counter. I have 3 service monitors and would be glad to check your rig free of charge if you pay postage both ways. My test equipment is calibrated to an HP GPS frequency standard so I can give you a pretty accurate measurement. 73 Andy WD4KDN I resolved the question with testing. I had 5 other stations all over the county try the same trick - I.E. transmitting 15kc below the input to the N0KTA repeater. All 5 were able to make the repeater key up easily. That plus the fact that my TM-271A comes standard with a TXCO and the simplex tests I've done has convinced me that it's NOT my rig. I contacted N0KTA but haven't gotten an answer yet. Thanks to all for the advice & help. 73's de Ken KG0WX |
Learn how duplexers work before you open your mouth and say something wrong.
They do not have very much selectivity for very near frequencies. That is while they have notches around 80 to 120 db to keep the receiver and transmiters seperated, the first 100 kc or more has only a few db of selectivity. "Photoman" wrote in message ... It's good to see that you worked the problem out yourself. I'm amazed that your signal made it through the cavities of the local repeater. Sound like the owner needs to do some duplexer tuning or get another set. Congratulations on solving your problem. Ken KC4IH "Ken Bessler" wrote in message news:tVSod.2461$3I.1347@okepread01... "nitespark" wrote in message news:ymQod.4883$1t.4522@lakeread07... Ken Bessler wrote: All these tests were done with a known good antenna & new CQ-102 coax. Rig is a 1 year old Kenwood TM-271A. All tests were done at an indicated 68 w which is about normal for hi power from this rig. I'll refrain from using the Pratt repeater until this is fixed. My question is this - have I done enough to assume that the problem is not on my end? Sending in my rig for service monitor testing would be difficult & a genuine pain in the neck. Ken KG0WX The only way to determine your rigs frequency would be to put it on a service monitor or at the least, a frequency counter. I have 3 service monitors and would be glad to check your rig free of charge if you pay postage both ways. My test equipment is calibrated to an HP GPS frequency standard so I can give you a pretty accurate measurement. 73 Andy WD4KDN I resolved the question with testing. I had 5 other stations all over the county try the same trick - I.E. transmitting 15kc below the input to the N0KTA repeater. All 5 were able to make the repeater key up easily. That plus the fact that my TM-271A comes standard with a TXCO and the simplex tests I've done has convinced me that it's NOT my rig. I contacted N0KTA but haven't gotten an answer yet. Thanks to all for the advice & help. 73's de Ken KG0WX |
"Ralph Mowery" wrote in message k.net... Chances are there is nothing wrong with either system. Operating 15 kcs is really too close for repeaters. Many of them are converted comercial rigs and the selectivity is not that good in many cases as they were designed for 30 KC spacings. When the repeater keys up and you are 15 kc away from it , will it break the squelch of your rig ? No. As a matter of fact, I tried to hear several VERY close repeaters when +/- 15kc of their outputs. I heard none of them. You're telling me a repeater is *supposed* to be *less* selective than a Kenwood TM-271A? P.S. Happy Thanksgiving. 73's es gd trky de Ken KG0WX |
"Ralph Mowery" wrote in message k.net... Chances are there is nothing wrong with either system. Operating 15 kcs is really too close for repeaters. Many of them are converted comercial rigs and the selectivity is not that good in many cases as they were designed for 30 KC spacings. When the repeater keys up and you are 15 kc away from it , will it break the squelch of your rig ? No. As a matter of fact, I tried to hear several VERY close repeaters when +/- 15kc of their outputs. I heard none of them. You're telling me a repeater is *supposed* to be *less* selective than a Kenwood TM-271A? P.S. Happy Thanksgiving. 73's es gd trky de Ken KG0WX |
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