Re: [Repeater-Builder] MASTR II LOW BAND TUNING
Jeff DePolo wrote: I took a quick look at them, and what stands out like a sore thumb is 1.6 db insertion loss with a 150 watt power rating. That means they'll be dissipating close to 50 watts in such a small package. Doesn't give me a warm and fuzzy feeling... --- Jeff WN3A Warm likely - maybe even hot, but certainly not fuzzy. - - Sort of like a cheap soldering iron. Kevin
Re: [Repeater-Builder] MASTR II LOW BAND TUNING
I was just quoting the sales flyer. I agree that the bandpass curve has the typical knee shaped bandpass curve instead of the bell shaped curve for what I would call a bandpass duplexer. The only real application that I can see for these duplexers would be a mobile installation that is operating in the full-duplex mode. It's interesting that they picked 52 and 53MHz on the plot, maybe they were targeting the ham market? 73, Joe, K1ike On 7/5/2010 8:02 PM, Eric Lemmon wrote: I see what the sales flyer says, but the response plots show no real bandpass action.
Re: [Repeater-Builder] MASTR II LOW BAND TUNING
I'd still suggest that he try them since he already has them. If they don't work out, so be it. They can easily be swept to confirm the results, too. Chuck WB2EDV - Original Message - From: Joe k1ike_m...@snet.net To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 06, 2010 9:27 AM Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING I was just quoting the sales flyer. I agree that the bandpass curve has the typical knee shaped bandpass curve instead of the bell shaped curve for what I would call a bandpass duplexer. The only real application that I can see for these duplexers would be a mobile installation that is operating in the full-duplex mode. It's interesting that they picked 52 and 53MHz on the plot, maybe they were targeting the ham market? 73, Joe, K1ike On 7/5/2010 8:02 PM, Eric Lemmon wrote: I see what the sales flyer says, but the response plots show no real bandpass action.
Re: [Repeater-Builder] MASTR II LOW BAND TUNING
Hi Eric, First thanks you for pointing me to the manuals and Don for the NHRC Tuning site. Eric the combination numbers are MC74AAU33A. They came from a trucking company and I think they are on 47.XXX. I am taking over the Wellsville 53.090 Repeater as the original owner is re-locating. He has a custom built repeater MASTR II from Repeater Builder going thru a rack mount flat pack duplexer with about 90 Db of isolation, but there is also 2 Db of receiver loss thru the cans. I have two sites 6 miles apart and I want to try split sites using the above mentioned GE as the TX and use the HOT RX on the custom Repeater for the RX. I am in hopes that all I have to do is tune the TX and hook it to the link radio. 73 JIM KA2AJH On Sun, Jul 4, 2010 at 8:39 PM, Eric Lemmon wb6...@verizon.net wrote: Jim, Perhaps you are not aware that Repeater-Builder has a huge index of General Electric manuals. Just look at any Description Maintenance manual for a low-band radio to get the tuning instructions. Since you did not specify exactly which low-band radio you have, any of these LBIs will probably get you going: www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf Please be aware that even a high-split (33 range) radio may need modification to perform well in the Amateur 6m band. What is the Combination Number of the radio you want to tune? 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com] On Behalf Of James Sent: Sunday, July 04, 2010 3:46 PM To: Repeater-Builder@yahoogroups.com Repeater-Builder%40yahoogroups.com Subject: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Guys, Is there a link to tuning a low band mastr II? I have googled and find all kinds of VHF High and UHF but not Mastr II Low. I want to tune to six meters. Thanks JIM KA2AJH -- KA2AJH Jim Cicirello 181 Stevens Street Wellsville, N.Y. 14895 (585)593-4655
Re: [Repeater-Builder] MASTR II LOW BAND TUNING
Jim - My experience with 6-FM is that you are going to have a much harder time hearing the repeater than getting in to it. The noise encountered in a mobile environment desenses your receiver. There are exceptions to this, but as a general rule it's true. So, some loss on RX isn't necessarily going to be a killer. My 6 meter repeater typically far outhears that the user receiver can pick up. You can be full quieting running a 50 or less watt mobile and have difficulty hearing the repeater's 100 watt transmitter. Again, not always, but quite often. Chuck WB2EDV - Original Message - From: James Cicirello To: Repeater-Builder@yahoogroups.com Sent: Monday, July 05, 2010 12:54 PM Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Eric, First thanks you for pointing me to the manuals and Don for the NHRC Tuning site. Eric the combination numbers are MC74AAU33A. They came from a trucking company and I think they are on 47.XXX. I am taking over the Wellsville 53.090 Repeater as the original owner is re-locating. He has a custom built repeater MASTR II from Repeater Builder going thru a rack mount flat pack duplexer with about 90 Db of isolation, but there is also 2 Db of receiver loss thru the cans. I have two sites 6 miles apart and I want to try split sites using the above mentioned GE as the TX and use the HOT RX on the custom Repeater for the RX. I am in hopes that all I have to do is tune the TX and hook it to the link radio. 73 JIM KA2AJH On Sun, Jul 4, 2010 at 8:39 PM, Eric Lemmon wb6...@verizon.net wrote: Jim, Perhaps you are not aware that Repeater-Builder has a huge index of General Electric manuals. Just look at any Description Maintenance manual for a low-band radio to get the tuning instructions. Since you did not specify exactly which low-band radio you have, any of these LBIs will probably get you going: www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf Please be aware that even a high-split (33 range) radio may need modification to perform well in the Amateur 6m band. What is the Combination Number of the radio you want to tune? 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of James Sent: Sunday, July 04, 2010 3:46 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Guys, Is there a link to tuning a low band mastr II? I have googled and find all kinds of VHF High and UHF but not Mastr II Low. I want to tune to six meters. Thanks JIM KA2AJH -- KA2AJH Jim Cicirello 181 Stevens Street Wellsville, N.Y. 14895 (585)593-4655 -- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.830 / Virus Database: 271.1.1/2983 - Release Date: 07/05/10 02:36:00
Re: [Repeater-Builder] MASTR II LOW BAND TUNING
That's why base stations have 250 - 300w where mobiles are 100. On 07/05/2010 12:20 PM, Chuck Kelsey wrote: Jim - My experience with 6-FM is that you are going to have a much harder time hearing the repeater than getting in to it. The noise encountered in a mobile environment desenses your receiver. There are exceptions to this, but as a general rule it's true. So, some loss on RX isn't necessarily going to be a killer. My 6 meter repeater typically far outhears that the user receiver can pick up. You can be full quieting running a 50 or less watt mobile and have difficulty hearing the repeater's 100 watt transmitter. Again, not always, but quite often. Chuck WB2EDV _,_._,___
RE: [Repeater-Builder] MASTR II LOW BAND TUNING
Jim, A low-band repeater with a flat-pack duplexer having 90 dB of isolation? That's amazing! My low-band repeater uses four 12 diameter cans that each stand about five feet tall. Your MC74AAU33A radio is an M-series 100 watt mobile radio, covered by PC-61 here: www.repeater-builder.com/ge/product-code-indexes/index-pc61-mastr-ii-m-seri es-mobiles.pdf The transmitter tuning information is covered in LBI-4898, available at the link I gave you earlier. It is not a full-page version, but it will have to do until we can borrow a paper copy to scan. If any readers of this list have a clean and complete original LBI-4898 that we can borrow for full-page scanning, please contact me directly at mycall at verizon dot net. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of James Cicirello Sent: Monday, July 05, 2010 9:54 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Eric, First thanks you for pointing me to the manuals and Don for the NHRC Tuning site. Eric the combination numbers are MC74AAU33A. They came from a trucking company and I think they are on 47.XXX. I am taking over the Wellsville 53.090 Repeater as the original owner is re-locating. He has a custom built repeater MASTR II from Repeater Builder going thru a rack mount flat pack duplexer with about 90 Db of isolation, but there is also 2 Db of receiver loss thru the cans. I have two sites 6 miles apart and I want to try split sites using the above mentioned GE as the TX and use the HOT RX on the custom Repeater for the RX. I am in hopes that all I have to do is tune the TX and hook it to the link radio. 73 JIM KA2AJH On Sun, Jul 4, 2010 at 8:39 PM, Eric Lemmon wb6...@verizon.net mailto:wb6...@verizon.net wrote: Jim, Perhaps you are not aware that Repeater-Builder has a huge index of General Electric manuals. Just look at any Description Maintenance manual for a low-band radio to get the tuning instructions. Since you did not specify exactly which low-band radio you have, any of these LBIs will probably get you going: www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf Please be aware that even a high-split (33 range) radio may need modification to perform well in the Amateur 6m band. What is the Combination Number of the radio you want to tune? 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com ] On Behalf Of James Sent: Sunday, July 04, 2010 3:46 PM To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Subject: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Guys, Is there a link to tuning a low band mastr II? I have googled and find all kinds of VHF High and UHF but not Mastr II Low. I want to tune to six meters. Thanks JIM KA2AJH -- KA2AJH Jim Cicirello 181 Stevens Street Wellsville, N.Y. 14895 (585)593-4655
Re: [Repeater-Builder] MASTR II LOW BAND TUNING
Hi Again Eric, When you get a chance will you look at these duplexers and give me your opinion? http://www.radiodata.com/fiplex/products/PDFs/DHV05.pdf The duplexer I got with the repeater is the Model DHV-0544.( THE 533 has been discontinued) The way I am reading their specs it is 90 dB at 1 MHz, Anyone else wish to comment, Chuck you have some 6 meter machines too. I just got these from the owner today and am looking for advice, opinions, etc. This is a new product that he spent a lot of bucks on, so I am looking for opinions, anybody that may have experience with these duplexers, to include a split site Vs these duplexers. Thanks all 73 JIM KA2AJH Wellsville, N.Y. On Mon, Jul 5, 2010 at 2:23 PM, Eric Lemmon wb6...@verizon.net wrote: Jim, A low-band repeater with a flat-pack duplexer having 90 dB of isolation? That's amazing! My low-band repeater uses four 12 diameter cans that each stand about five feet tall. Your MC74AAU33A radio is an M-series 100 watt mobile radio, covered by PC-61 here: www.repeater-builder.com/ge/product-code-indexes/index-pc61-mastr-ii-m-seri es-mobiles.pdf The transmitter tuning information is covered in LBI-4898, available at the link I gave you earlier. It is not a full-page version, but it will have to do until we can borrow a paper copy to scan. If any readers of this list have a clean and complete original LBI-4898 that we can borrow for full-page scanning, please contact me directly at mycall at verizon dot net. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com] On Behalf Of James Cicirello Sent: Monday, July 05, 2010 9:54 AM To: Repeater-Builder@yahoogroups.com Repeater-Builder%40yahoogroups.com Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Eric, First thanks you for pointing me to the manuals and Don for the NHRC Tuning site. Eric the combination numbers are MC74AAU33A. They came from a trucking company and I think they are on 47.XXX. I am taking over the Wellsville 53.090 Repeater as the original owner is re-locating. He has a custom built repeater MASTR II from Repeater Builder going thru a rack mount flat pack duplexer with about 90 Db of isolation, but there is also 2 Db of receiver loss thru the cans. I have two sites 6 miles apart and I want to try split sites using the above mentioned GE as the TX and use the HOT RX on the custom Repeater for the RX. I am in hopes that all I have to do is tune the TX and hook it to the link radio. 73 JIM KA2AJH On Sun, Jul 4, 2010 at 8:39 PM, Eric Lemmon wb6...@verizon.netwb6fly%40verizon.net mailto:wb6...@verizon.net wb6fly%40verizon.net wrote: Jim, Perhaps you are not aware that Repeater-Builder has a huge index of General Electric manuals. Just look at any Description Maintenance manual for a low-band radio to get the tuning instructions. Since you did not specify exactly which low-band radio you have, any of these LBIs will probably get you going: www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf Please be aware that even a high-split (33 range) radio may need modification to perform well in the Amateur 6m band. What is the Combination Number of the radio you want to tune? 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder%2540yahoogroups.com [mailto:Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder%2540yahoogroups.com ] On Behalf Of James Sent: Sunday, July 04, 2010 3:46 PM To: Repeater-Builder@yahoogroups.com Repeater-Builder%40yahoogroups.com mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder%2540yahoogroups.com Subject: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Guys, Is there a link to tuning a low band mastr II? I have googled and find all kinds of VHF High and UHF but not Mastr II Low. I want to tune to six meters. Thanks JIM KA2AJH -- KA2AJH Jim Cicirello 181 Stevens Street Wellsville, N.Y. 14895 (585)593-4655 -- KA2AJH Jim Cicirello 181 Stevens Street Wellsville, N.Y. 14895 (585)593-4655
Re: [Repeater-Builder] MASTR II LOW BAND TUNING
I'd certainly try single site since you've got the reject filters. It's certainly easier to manage than split site. With split site, in the hills we have around here, you are going to get two different coverage areas - one for TX and another for RX. If it were flatter, it wouldn't make a big difference, at least in my opinion. You'll want to back the power down and put fans on it since it's a mobile. I also prefer to tune the antenna to favor the TX. Chuck WB2EDV - Original Message - From: James Cicirello To: Repeater-Builder@yahoogroups.com Sent: Monday, July 05, 2010 5:19 PM Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Again Eric, When you get a chance will you look at these duplexers and give me your opinion? http://www.radiodata.com/fiplex/products/PDFs/DHV05.pdf The duplexer I got with the repeater is the Model DHV-0544.( THE 533 has been discontinued) The way I am reading their specs it is 90 dB at 1 MHz, Anyone else wish to comment, Chuck you have some 6 meter machines too. I just got these from the owner today and am looking for advice, opinions, etc. This is a new product that he spent a lot of bucks on, so I am looking for opinions, anybody that may have experience with these duplexers, to include a split site Vs these duplexers. Thanks all 73 JIM KA2AJH Wellsville, N.Y. On Mon, Jul 5, 2010 at 2:23 PM, Eric Lemmon wb6...@verizon.net wrote: Jim, A low-band repeater with a flat-pack duplexer having 90 dB of isolation? That's amazing! My low-band repeater uses four 12 diameter cans that each stand about five feet tall. Your MC74AAU33A radio is an M-series 100 watt mobile radio, covered by PC-61 here: www.repeater-builder.com/ge/product-code-indexes/index-pc61-mastr-ii-m-seri es-mobiles.pdf The transmitter tuning information is covered in LBI-4898, available at the link I gave you earlier. It is not a full-page version, but it will have to do until we can borrow a paper copy to scan. If any readers of this list have a clean and complete original LBI-4898 that we can borrow for full-page scanning, please contact me directly at mycall at verizon dot net. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of James Cicirello Sent: Monday, July 05, 2010 9:54 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Eric, First thanks you for pointing me to the manuals and Don for the NHRC Tuning site. Eric the combination numbers are MC74AAU33A. They came from a trucking company and I think they are on 47.XXX. I am taking over the Wellsville 53.090 Repeater as the original owner is re-locating. He has a custom built repeater MASTR II from Repeater Builder going thru a rack mount flat pack duplexer with about 90 Db of isolation, but there is also 2 Db of receiver loss thru the cans. I have two sites 6 miles apart and I want to try split sites using the above mentioned GE as the TX and use the HOT RX on the custom Repeater for the RX. I am in hopes that all I have to do is tune the TX and hook it to the link radio. 73 JIM KA2AJH On Sun, Jul 4, 2010 at 8:39 PM, Eric Lemmon wb6...@verizon.net mailto:wb6...@verizon.net wrote: Jim, Perhaps you are not aware that Repeater-Builder has a huge index of General Electric manuals. Just look at any Description Maintenance manual for a low-band radio to get the tuning instructions. Since you did not specify exactly which low-band radio you have, any of these LBIs will probably get you going: www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf Please be aware that even a high-split (33 range) radio may need modification to perform well in the Amateur 6m band. What is the Combination Number of the radio you want to tune? 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com ] On Behalf Of James Sent: Sunday, July 04, 2010 3:46 PM To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Subject: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Guys
Re: [Repeater-Builder] MASTR II LOW BAND TUNING
Good thoughts Chuck. I never thought about the two patterns. I have to check and make sure I have your Freq. programmed into my mobile. 73 JIM KA2AJH On Mon, Jul 5, 2010 at 5:32 PM, Chuck Kelsey wb2...@roadrunner.com wrote: I'd certainly try single site since you've got the reject filters. It's certainly easier to manage than split site. With split site, in the hills we have around here, you are going to get two different coverage areas - one for TX and another for RX. If it were flatter, it wouldn't make a big difference, at least in my opinion. You'll want to back the power down and put fans on it since it's a mobile. I also prefer to tune the antenna to favor the TX. Chuck WB2EDV - Original Message - *From:* James Cicirello ka2...@gmail.com *To:* Repeater-Builder@yahoogroups.com *Sent:* Monday, July 05, 2010 5:19 PM *Subject:* Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Again Eric, When you get a chance will you look at these duplexers and give me your opinion? http://www.radiodata.com/fiplex/products/PDFs/DHV05.pdf The duplexer I got with the repeater is the Model DHV-0544.( THE 533 has been discontinued) The way I am reading their specs it is 90 dB at 1 MHz, Anyone else wish to comment, Chuck you have some 6 meter machines too. I just got these from the owner today and am looking for advice, opinions, etc. This is a new product that he spent a lot of bucks on, so I am looking for opinions, anybody that may have experience with these duplexers, to include a split site Vs these duplexers. Thanks all 73 JIM KA2AJH Wellsville, N.Y. On Mon, Jul 5, 2010 at 2:23 PM, Eric Lemmon wb6...@verizon.net wrote: Jim, A low-band repeater with a flat-pack duplexer having 90 dB of isolation? That's amazing! My low-band repeater uses four 12 diameter cans that each stand about five feet tall. Your MC74AAU33A radio is an M-series 100 watt mobile radio, covered by PC-61 here: www.repeater-builder.com/ge/product-code-indexes/index-pc61-mastr-ii-m-seri es-mobiles.pdf The transmitter tuning information is covered in LBI-4898, available at the link I gave you earlier. It is not a full-page version, but it will have to do until we can borrow a paper copy to scan. If any readers of this list have a clean and complete original LBI-4898 that we can borrow for full-page scanning, please contact me directly at mycall at verizon dot net. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com] On Behalf Of James Cicirello Sent: Monday, July 05, 2010 9:54 AM To: Repeater-Builder@yahoogroups.com Repeater-Builder%40yahoogroups.com Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Eric, First thanks you for pointing me to the manuals and Don for the NHRC Tuning site. Eric the combination numbers are MC74AAU33A. They came from a trucking company and I think they are on 47.XXX. I am taking over the Wellsville 53.090 Repeater as the original owner is re-locating. He has a custom built repeater MASTR II from Repeater Builder going thru a rack mount flat pack duplexer with about 90 Db of isolation, but there is also 2 Db of receiver loss thru the cans. I have two sites 6 miles apart and I want to try split sites using the above mentioned GE as the TX and use the HOT RX on the custom Repeater for the RX. I am in hopes that all I have to do is tune the TX and hook it to the link radio. 73 JIM KA2AJH On Sun, Jul 4, 2010 at 8:39 PM, Eric Lemmon wb6...@verizon.netwb6fly%40verizon.net mailto:wb6...@verizon.net wb6fly%40verizon.net wrote: Jim, Perhaps you are not aware that Repeater-Builder has a huge index of General Electric manuals. Just look at any Description Maintenance manual for a low-band radio to get the tuning instructions. Since you did not specify exactly which low-band radio you have, any of these LBIs will probably get you going: www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf Please be aware that even a high-split (33 range) radio may need modification to perform well in the Amateur 6m band. What is the Combination Number of the radio you want to tune? 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder%2540yahoogroups.com [mailto:Repeater-Builder@yahoogroups.comRepeater-Builder
Re: [Repeater-Builder] MASTR II LOW BAND TUNING
You might make if from a hilltop. The Limestone 6-meter machine that's linked in is down temporarily for some lightning repairs. That one is closer to you and you'd probably get into it if it were up. Chuck - Original Message - From: James Cicirello To: Repeater-Builder@yahoogroups.com Sent: Monday, July 05, 2010 5:36 PM Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Good thoughts Chuck. I never thought about the two patterns. I have to check and make sure I have your Freq. programmed into my mobile. 73 JIM KA2AJH On Mon, Jul 5, 2010 at 5:32 PM, Chuck Kelsey wb2...@roadrunner.com wrote: I'd certainly try single site since you've got the reject filters. It's certainly easier to manage than split site. With split site, in the hills we have around here, you are going to get two different coverage areas - one for TX and another for RX. If it were flatter, it wouldn't make a big difference, at least in my opinion. You'll want to back the power down and put fans on it since it's a mobile. I also prefer to tune the antenna to favor the TX. Chuck WB2EDV - Original Message - From: James Cicirello To: Repeater-Builder@yahoogroups.com Sent: Monday, July 05, 2010 5:19 PM Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Again Eric, When you get a chance will you look at these duplexers and give me your opinion? http://www.radiodata.com/fiplex/products/PDFs/DHV05.pdf The duplexer I got with the repeater is the Model DHV-0544.( THE 533 has been discontinued) The way I am reading their specs it is 90 dB at 1 MHz, Anyone else wish to comment, Chuck you have some 6 meter machines too. I just got these from the owner today and am looking for advice, opinions, etc. This is a new product that he spent a lot of bucks on, so I am looking for opinions, anybody that may have experience with these duplexers, to include a split site Vs these duplexers. Thanks all 73 JIM KA2AJH Wellsville, N.Y. On Mon, Jul 5, 2010 at 2:23 PM, Eric Lemmon wb6...@verizon.net wrote: Jim, A low-band repeater with a flat-pack duplexer having 90 dB of isolation? That's amazing! My low-band repeater uses four 12 diameter cans that each stand about five feet tall. Your MC74AAU33A radio is an M-series 100 watt mobile radio, covered by PC-61 here: www.repeater-builder.com/ge/product-code-indexes/index-pc61-mastr-ii-m-seri es-mobiles.pdf The transmitter tuning information is covered in LBI-4898, available at the link I gave you earlier. It is not a full-page version, but it will have to do until we can borrow a paper copy to scan. If any readers of this list have a clean and complete original LBI-4898 that we can borrow for full-page scanning, please contact me directly at mycall at verizon dot net. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of James Cicirello Sent: Monday, July 05, 2010 9:54 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Eric, First thanks you for pointing me to the manuals and Don for the NHRC Tuning site. Eric the combination numbers are MC74AAU33A. They came from a trucking company and I think they are on 47.XXX. I am taking over the Wellsville 53.090 Repeater as the original owner is re-locating. He has a custom built repeater MASTR II from Repeater Builder going thru a rack mount flat pack duplexer with about 90 Db of isolation, but there is also 2 Db of receiver loss thru the cans. I have two sites 6 miles apart and I want to try split sites using the above mentioned GE as the TX and use the HOT RX on the custom Repeater for the RX. I am in hopes that all I have to do is tune the TX and hook it to the link radio. 73 JIM KA2AJH On Sun, Jul 4, 2010 at 8:39 PM, Eric Lemmon wb6...@verizon.net mailto:wb6...@verizon.net wrote: Jim, Perhaps you are not aware that Repeater-Builder has a huge index of General Electric manuals. Just look at any Description Maintenance manual for a low-band radio to get the tuning instructions. Since you did not specify exactly which low-band radio you have, any of these LBIs will probably get you going: www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf http://www.repeater-builder.com/ge/lbi
RE: [Repeater-Builder] MASTR II LOW BAND TUNING
They are notch only devices and I've used similar devices using that helical design for years. If you don't have a lot of noise on/around site washing over your receive freq, they will get the job done. Kb0wlf From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of James Cicirello Sent: Monday, July 05, 2010 4:19 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Again Eric, When you get a chance will you look at these duplexers and give me your opinion? http://www.radiodata.com/fiplex/products/PDFs/DHV05.pdf The duplexer I got with the repeater is the Model DHV-0544.( THE 533 has been discontinued) The way I am reading their specs it is 90 dB at 1 MHz, Anyone else wish to comment, Chuck you have some 6 meter machines too. I just got these from the owner today and am looking for advice, opinions, etc. This is a new product that he spent a lot of bucks on, so I am looking for opinions, anybody that may have experience with these duplexers, to include a split site Vs these duplexers. Thanks all 73 JIM KA2AJH Wellsville, N.Y. On Mon, Jul 5, 2010 at 2:23 PM, Eric Lemmon wb6...@verizon.net wrote: Jim, A low-band repeater with a flat-pack duplexer having 90 dB of isolation? That's amazing! My low-band repeater uses four 12 diameter cans that each stand about five feet tall. Your MC74AAU33A radio is an M-series 100 watt mobile radio, covered by PC-61 here: www.repeater-builder.com/ge/product-code-indexes/index-pc61-mastr-ii-m-seri es-mobiles.pdf The transmitter tuning information is covered in LBI-4898, available at the link I gave you earlier. It is not a full-page version, but it will have to do until we can borrow a paper copy to scan. If any readers of this list have a clean and complete original LBI-4898 that we can borrow for full-page scanning, please contact me directly at mycall at verizon dot net. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com ] On Behalf Of James Cicirello Sent: Monday, July 05, 2010 9:54 AM To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Eric, First thanks you for pointing me to the manuals and Don for the NHRC Tuning site. Eric the combination numbers are MC74AAU33A. They came from a trucking company and I think they are on 47.XXX. I am taking over the Wellsville 53.090 Repeater as the original owner is re-locating. He has a custom built repeater MASTR II from Repeater Builder going thru a rack mount flat pack duplexer with about 90 Db of isolation, but there is also 2 Db of receiver loss thru the cans. I have two sites 6 miles apart and I want to try split sites using the above mentioned GE as the TX and use the HOT RX on the custom Repeater for the RX. I am in hopes that all I have to do is tune the TX and hook it to the link radio. 73 JIM KA2AJH On Sun, Jul 4, 2010 at 8:39 PM, Eric Lemmon wb6...@verizon.net mailto:wb6fly%40verizon.net mailto:wb6...@verizon.net mailto:wb6fly%40verizon.net wrote: Jim, Perhaps you are not aware that Repeater-Builder has a huge index of General Electric manuals. Just look at any Description Maintenance manual for a low-band radio to get the tuning instructions. Since you did not specify exactly which low-band radio you have, any of these LBIs will probably get you going: www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf Please be aware that even a high-split (33 range) radio may need modification to perform well in the Amateur 6m band. What is the Combination Number of the radio you want to tune? 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com mailto:Repeater-Builder%2540yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com mailto:Repeater-Builder%2540yahoogroups.com ] On Behalf Of James Sent: Sunday, July 04, 2010 3:46 PM To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com mailto:Repeater-Builder%2540yahoogroups.com Subject: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Guys, Is there a link to tuning a low band mastr II? I have googled
RE: [Repeater-Builder] MASTR II LOW BAND TUNING
Jim, I have no experience with such a small duplexer for low-band, since 6m repeaters in my area (Central California) have a 500 kHz split- which requires more isolation than a compact duplexer can muster. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of James Cicirello Sent: Monday, July 05, 2010 2:19 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Again Eric, When you get a chance will you look at these duplexers and give me your opinion? http://www.radiodata.com/fiplex/products/PDFs/DHV05.pdf http://www.radiodata.com/fiplex/products/PDFs/DHV05.pdf The duplexer I got with the repeater is the Model DHV-0544.( THE 533 has been discontinued) The way I am reading their specs it is 90 dB at 1 MHz, Anyone else wish to comment, Chuck you have some 6 meter machines too. I just got these from the owner today and am looking for advice, opinions, etc. This is a new product that he spent a lot of bucks on, so I am looking for opinions, anybody that may have experience with these duplexers, to include a split site Vs these duplexers. Thanks all 73 JIM KA2AJH Wellsville, N.Y. On Mon, Jul 5, 2010 at 2:23 PM, Eric Lemmon wb6...@verizon.net mailto:wb6...@verizon.net wrote: Jim, A low-band repeater with a flat-pack duplexer having 90 dB of isolation? That's amazing! My low-band repeater uses four 12 diameter cans that each stand about five feet tall. Your MC74AAU33A radio is an M-series 100 watt mobile radio, covered by PC-61 here: www.repeater-builder.com/ge/product-code-indexes/index-pc61-mastr-ii-m-seri http://www.repeater-builder.com/ge/product-code-indexes/index-pc61-mastr-ii -m-seri es-mobiles.pdf The transmitter tuning information is covered in LBI-4898, available at the link I gave you earlier. It is not a full-page version, but it will have to do until we can borrow a paper copy to scan. If any readers of this list have a clean and complete original LBI-4898 that we can borrow for full-page scanning, please contact me directly at mycall at verizon dot net. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com ] On Behalf Of James Cicirello Sent: Monday, July 05, 2010 9:54 AM To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Eric, First thanks you for pointing me to the manuals and Don for the NHRC Tuning site. Eric the combination numbers are MC74AAU33A. They came from a trucking company and I think they are on 47.XXX. I am taking over the Wellsville 53.090 Repeater as the original owner is re-locating. He has a custom built repeater MASTR II from Repeater Builder going thru a rack mount flat pack duplexer with about 90 Db of isolation, but there is also 2 Db of receiver loss thru the cans. I have two sites 6 miles apart and I want to try split sites using the above mentioned GE as the TX and use the HOT RX on the custom Repeater for the RX. I am in hopes that all I have to do is tune the TX and hook it to the link radio. 73 JIM KA2AJH On Sun, Jul 4, 2010 at 8:39 PM, Eric Lemmon wb6...@verizon.net mailto:wb6fly%40verizon.net mailto:wb6...@verizon.net mailto:wb6fly%40verizon.net wrote: Jim, Perhaps you are not aware that Repeater-Builder has a huge index of General Electric manuals. Just look at any Description Maintenance manual for a low-band radio to get the tuning instructions. Since you did not specify exactly which low-band radio you have, any of these LBIs will probably get you going: www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf http://www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf http://www.repeater-builder.com/ge
Re: [Repeater-Builder] MASTR II LOW BAND TUNING
The spec sheet shows them to be bandpass/band reject. From the document: These duplexers utilize six high Q (helical) resonant cavities, interconnected in a band pass-band reject configuration which allows close spaced transmit-to-receive frequency operation. Joe On 7/5/2010 6:33 PM, Chris Curtis wrote: They are notch only devices and I've used similar devices using that helical design for years.
RE: [Repeater-Builder] MASTR II LOW BAND TUNING
Yes, my error. I had the old DB products on the brain. =] Kb0wlf From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Joe Sent: Monday, July 05, 2010 6:18 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING The spec sheet shows them to be bandpass/band reject. From the document: These duplexers utilize six high Q (helical) resonant cavities, interconnected in a band pass-band reject configuration which allows close spaced transmit-to-receive frequency operation. Joe On 7/5/2010 6:33 PM, Chris Curtis wrote: They are notch only devices and I've used similar devices using that helical design for years. No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.439 / Virus Database: 271.1.1/2962 - Release Date: 07/05/10 06:36:00
RE: [Repeater-Builder] MASTR II LOW BAND TUNING
I see what the sales flyer says, but the response plots show no real bandpass action. Indeed, the plots depict exactly how a notch-only duplexer responds. In fact, the plots look faked, IMHO. I have tuned many duplexers over the years, and none of the plots look so perfect. If Fiplex duplexers are so great, why aren't they used by large state patrol systems? Is there a list of satisfied customers? Maybe I'm just too cynical, but I think the specs for those duplexers are just too good to be true. I'm going to keep my money in my pocket until I see some credible evidence that these duplexers perform as advertised. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Joe Sent: Monday, July 05, 2010 4:18 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING The spec sheet shows them to be bandpass/band reject. From the document: These duplexers utilize six high Q (helical) resonant cavities, interconnected in a band pass-band reject configuration which allows close spaced transmit-to-receive frequency operation. Joe On 7/5/2010 6:33 PM, Chris Curtis wrote: They are notch only devices and I've used similar devices using that helical design for years.
RE: [Repeater-Builder] MASTR II LOW BAND TUNING
I took a quick look at them, and what stands out like a sore thumb is 1.6 db insertion loss with a 150 watt power rating. That means they'll be dissipating close to 50 watts in such a small package. Doesn't give me a warm and fuzzy feeling... --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Eric Lemmon Sent: Monday, July 05, 2010 8:02 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] MASTR II LOW BAND TUNING I see what the sales flyer says, but the response plots show no real bandpass action. Indeed, the plots depict exactly how a notch-only duplexer responds. In fact, the plots look faked, IMHO. I have tuned many duplexers over the years, and none of the plots look so perfect. If Fiplex duplexers are so great, why aren't they used by large state patrol systems? Is there a list of satisfied customers? Maybe I'm just too cynical, but I think the specs for those duplexers are just too good to be true. I'm going to keep my money in my pocket until I see some credible evidence that these duplexers perform as advertised. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com ] On Behalf Of Joe Sent: Monday, July 05, 2010 4:18 PM To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Subject: Re: [Repeater-Builder] MASTR II LOW BAND TUNING The spec sheet shows them to be bandpass/band reject. From the document: These duplexers utilize six high Q (helical) resonant cavities, interconnected in a band pass-band reject configuration which allows close spaced transmit-to-receive frequency operation. Joe On 7/5/2010 6:33 PM, Chris Curtis wrote: They are notch only devices and I've used similar devices using that helical design for years.
Re: [Repeater-Builder] MASTR II LOW BAND TUNING
...but it sure gives THEM a warm feeling! 73, Paul, AE4KR - Original Message - From: Jeff DePolo To: Repeater-Builder@yahoogroups.com Sent: Monday, July 05, 2010 8:08 PM Subject: RE: [Repeater-Builder] MASTR II LOW BAND TUNING I took a quick look at them, and what stands out like a sore thumb is 1.6 db insertion loss with a 150 watt power rating. That means they'll be dissipating close to 50 watts in such a small package. Doesn't give me a warm and fuzzy feeling... --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Eric Lemmon Sent: Monday, July 05, 2010 8:02 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] MASTR II LOW BAND TUNING I see what the sales flyer says, but the response plots show no real bandpass action. Indeed, the plots depict...
RE: [Repeater-Builder] MASTR II LOW BAND TUNING
Jim, Perhaps you are not aware that Repeater-Builder has a huge index of General Electric manuals. Just look at any Description Maintenance manual for a low-band radio to get the tuning instructions. Since you did not specify exactly which low-band radio you have, any of these LBIs will probably get you going: www.repeater-builder.com/ge/lbi-library/lbi-4896.pdf www.repeater-builder.com/ge/lbi-library/lbi-4898g.pdf www.repeater-builder.com/ge/lbi-library/lbi-30104b.pdf www.repeater-builder.com/ge/lbi-library/lbi-30293a.pdf Please be aware that even a high-split (33 range) radio may need modification to perform well in the Amateur 6m band. What is the Combination Number of the radio you want to tune? 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of James Sent: Sunday, July 04, 2010 3:46 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] MASTR II LOW BAND TUNING Hi Guys, Is there a link to tuning a low band mastr II? I have googled and find all kinds of VHF High and UHF but not Mastr II Low. I want to tune to six meters. Thanks JIM KA2AJH
