Re: G.E.Master ll vs G.E. Exectutive
Unless you count the wall mount Mastr Exec II's. Essentially the same hardware as Desk Top but in a nice little wall mounted enclosure. Combo number would start with a "W" as opposed to an "F". --Dave * REPLY SEPARATOR * On 2/26/99, at 8:49 AM, John Lloyd wrote: From: John Lloyd <lloyd@...>
Ray,
No, there were no stand up base stations for the exec II. Only the desk top models.
John Lloyd, K7JL --------------------
Ray J. Vaughan wrote:
From: "Ray J. Vaughan" <ray@...>
At 06:29 PM 2/25/99 -0500, you wrote:
From: mch <mch@...>
Ray Vaughan wrote:
I don't think there's a 100 or 110 watt Exec II. There is, but they use Mastr II PAs - heatsink and all... Was there an Exec II base station? I don't mean the desktops, I have a bunch of those. But I don't think I've ever seen a stand up base station. Ray, KD4BBM
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Re: G.E.Master ll vs G.E. Exectutive
Ray,
No, there were no stand up base stations for the exec II. Only the desk top models.
John Lloyd, K7JL --------------------
Ray J. Vaughan wrote:
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From: "Ray J. Vaughan" <ray@...>
At 06:29 PM 2/25/99 -0500, you wrote:
From: mch <mch@...>
Ray Vaughan wrote:
I don't think there's a 100 or 110 watt Exec II. There is, but they use Mastr II PAs - heatsink and all... Was there an Exec II base station? I don't mean the desktops, I have a bunch of those. But I don't think I've ever seen a stand up base station.
Ray, KD4BBM
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Re: Moto R2009 service monitor
Mark,
Since you are in 2 land, I would try Amtronix. Rick Bowman has always been fair and honest with me. Find them at:
Thanks, David Waters, AC4JF
Mark Sihlanick wrote:
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From: Mark Sihlanick <n2qt@...>
I've got a Motorola R2009 service monito that's now got display problems. Is there a better choice for repair than direct with Motorola?? (or are there some quick checks that I should do first?)
Mark n2qt
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Re: G.E.Master ll vs G.E. Exectutive
At 06:29 PM 2/25/99 -0500, you wrote: From: mch <mch@...>
Ray Vaughan wrote:
I don't think there's a 100 or 110 watt Exec II. There is, but they use Mastr II PAs - heatsink and all... Was there an Exec II base station? I don't mean the desktops, I have a bunch of those. But I don't think I've ever seen a stand up base station. Ray, KD4BBM
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Bob,
The UHF Exec II will tune to the 440- 450 ham band with no problem. Just put in the ham crystals and tune it up! The Exec II is a little different in how the modules connect together and how it is laid out. The Audio Squelch is completely different. They both work about the same. Modifications for Repeaters is very simple and straightforward.
See the NHRC Webpage.
John Lloyd, K7JL
Utah VHF Society
------------------
bshanks@... wrote:
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From: bshanks@...
I have found several mods for GE radios to convert them to repeaters. Most, if not all, descibe GE Mastr II. I have a GE Mastr Executive II. What is the difference? And, it is a UHF currently at 451.575. Will it operate within the Ham bands, or is the conversion too complex? Any help would be appreciated.
Thanks,
Bob AB5UD
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At 03:23 AM 2/26/99 -0000, you wrote: From: bshanks@...
I have found several mods for GE radios to convert them to repeaters. Most, if not all, descibe GE Mastr II. I have a GE Mastr Executive II. What is the difference? And, it is a UHF currently at 451.575. Will it operate within the Ham bands, or is the conversion too complex? Any help would be appreciated. The Mastr Exec II is a very close cousin the the Mastr II, but not exactly the same. I actually like the Exec II a bit better, but I won't reject a Mastr II. Go to my conversion site: You could say I specialize in the coversion of the Exec II desktop radios. You'll have no trouble getting the 451 down to 440. No RF mods needed. But you will need to do the alingnment. Not hard, but you'll need a sig gen for the RX tuning. Good luck with your project. Ray, KD4BBM
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I have found several mods for GE radios to convert them to repeaters. Most, if not all, descibe GE Mastr II. I have a GE Mastr Executive II. What is the difference? And, it is a UHF currently at 451.575. Will it operate within the Ham bands, or is the conversion too complex? Any help would be appreciated.
Thanks,
Bob AB5UD
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Re: UHF Motorola Mitrek mobile?
Bill Anderson WB9TEW wrote: From: Bill Anderson WB9TEW <bill@...>
John, Please include me when you mail your notes, I am always looking for ways to improve my repeater and you may have a new angle I may have overlooked. Bill Anderson WB9TEW
John Lloyd wrote:
From: John Lloyd <lloyd@...>
Gary,
The Mitreks are easy to modify for repeater service. You will need to reduce the TX Power output since the heatsink is small. You will need to make a shield over the Channel Elements to get more Tx to Rx isolation. I will look up my notes and send them to you later on my duplex mods to the mitrek.
John Lloyd, K7JL
Utah VHF Society --------------------
w7ntf@... wrote:
From: w7ntf@...
Greetings, This is Gary, W7N TF, in Spanaway, WA. I have two UHF Motorola Mitrek mobiles that I was going to convert to repeater service before I got ahold of my GE Mastr-II mobiles. I may still go ahead and finish the project and keep a Mitrek for a backup repeater. Has anyone successfully converted a UHF Mitrek mobile for repeater service? Was it difficult, and what problems did you encounter? I bought a pair of rocks for one of my UHF repeater frequencies and found that one of the two Mitreks fails to transmit... The other transmits and receives ok, but still requires an alignment. I am looking for TXA, RXA, COS, and PTT connections in order to interface with my LinkComm RLC-2A or RLC-1 Plus controllers. I'd like to hear from you... Thanks.
73, de Gary, W7NTF
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John count me in to if you dont mind 73's Harold KD4JFN
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Re: UHF Motorola Mitrek mobile?
w7ntf@... wrote: From: w7ntf@...
Greetings, This is Gary, W7N TF, in Spanaway, WA. I have two UHF Motorola Mitrek mobiles that I was going to convert to repeater service before I got ahold of my GE Mastr-II mobiles. I may still go ahead and finish the project and keep a Mitrek for a backup repeater. Has anyone successfully converted a UHF Mitrek mobile for repeater service? Was it difficult, and what problems did you encounter? I bought a pair of rocks for one of my UHF repeater frequencies and found that one of the two Mitreks fails to transmit... The other transmits and receives ok, but still requires an alignment. I am looking for TXA, RXA, COS, and PTT connections in order to interface with my LinkComm RLC-2A or RLC-1 Plus controllers. I'd like to hear from you... Thanks.
73, de Gary, W7NTF For those that don't know it, I have recently added a Mitrek conversion site to the RBTIP site. There is a conversion for a vhf and a uhf there. Kevin
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Re: G.E.Master ll vs G.E. Exectutive
Ray Vaughan wrote: I don't think there's a 100 or 110 watt Exec II.
There is, but they use Mastr II PAs - heatsink and all... Joe, KR3P
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Re: G.E.Master ll vs G.E. Exectutive
At 10:18 PM 2/25/99 -0000, you wrote: From: mtwilley@...
I have run into a problem finding G.E. Master ll UHF radios here. I have found some Exectutive and from what I here they don't hold up as well as the Master ll radios. Anyone have any coments... Thanks Mike This should start an interesting debate. I've found the PA in Mastr (note: Mastr not Master) II Repeaters has a real weakness where the RF leaves the board. It's an easy fix if you get to it before the transistors fail, but it's a very frequent failure. I've only had one PS failure in an Exec II. No PA's yet. The Mastr II does seem to be built a bit heavier. And if you want a LOT of power, Mastr II is the only way to go. I don't think there's a 100 or 110 watt Exec II. And there's better support for Mastr II. There's even a drop in controller. The ICOM's in a Mastr II are totally shielded. But the Exec II can use any ICOM for any band. Nice when you're converting. I have some Mastr II repeaters, but my work horse is an Exec II. It's also my favorite to convert. See my conversion site: I'm sure there's some technical problems in the Exec II that were cleared up in the Mastr II. If by any chance you mean Mastr Exec Radios (not Mastr Exec II) avoid them. I have a couple. Real pain to work on. Not as modular as the others. I've run one for years for one week a year, full time, for a Ham Fest info channel. At least that PA is solid. If there's something specific you're thinking about, let us know. Ray, KD4BBM
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Re: UHF Motorola Mitrek mobile?
Ditto. Perhaps a post to the list might be in order? It certainly is on-topic. :)
Joe, KR3P
Marvin Munster wrote:
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John, Please, if you would, send me a copy of your notes. I am always looking for improvements on my attempts to convert Mitreks to repeater service.
I will look up my notes and send them to you later on my duplex mods to the mitrek.
John Lloyd, K7JL
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Re: UHF Motorola Mitrek mobile?
John, Please, if you would, send me a copy of your notes. I am always looking for improvements on my attempts to convert Mitreks to repeater service. Thanks. Marvin - WB6PKK At 10:24 AM 2/25/99 -0700, you wrote: From: John Lloyd <lloyd@...>
Gary,
The Mitreks are easy to modify for repeater service. You will need to reduce the TX Power output since the heatsink is small. You will need to make a shield over the Channel Elements to get more Tx to Rx isolation. I will look up my notes and send them to you later on my duplex mods to the mitrek.
John Lloyd, K7JL
Utah VHF Society --------------------
w7ntf@... wrote:
From: w7ntf@...
Greetings, This is Gary, W7N TF, in Spanaway, WA. I have two UHF Motorola Mitrek mobiles that I was going to convert to repeater service before I got ahold of my GE Mastr-II mobiles. I may still go ahead and finish the project and keep a Mitrek for a backup repeater. Has anyone successfully converted a UHF
Mitrek mobile for repeater service? Was it difficult, and what problems did you encounter? I bought a pair of rocks for one of my UHF repeater frequencies and found that one of the two Mitreks fails to transmit... The other
transmits and receives ok, but still requires an alignment. I am looking for TXA,
RXA, COS, and PTT connections in order to interface with my LinkComm RLC-2A or RLC-1 Plus controllers. I'd like to hear from you... Thanks.
73, de Gary, W7NTF
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G.E.Master ll vs G.E. Exectutive
I have run into a problem finding G.E. Master ll UHF radios here. I have found some Exectutive and from what I here they don't hold up as well as the Master ll radios. Anyone have any coments... Thanks Mike
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Moto R2009 service monitor
I've got a Motorola R2009 service monito that's now got display problems. Is there a better choice for repair than direct with Motorola?? (or are there some quick checks that I should do first?)
Mark n2qt
|
Re: UHF Motorola Mitrek mobile?
John, Please include me when you mail your notes, I am always looking for ways to improve my repeater and you may have a new angle I may have overlooked. Bill Anderson WB9TEW
John Lloyd wrote:
toggle quoted message
Show quoted text
From: John Lloyd <lloyd@...>
Gary,
The Mitreks are easy to modify for repeater service. You will need to reduce the TX Power output since the heatsink is small. You will need to make a shield over the Channel Elements to get more Tx to Rx isolation. I will look up my notes and send them to you later on my duplex mods to the mitrek.
John Lloyd, K7JL
Utah VHF Society --------------------
w7ntf@... wrote:
From: w7ntf@...
Greetings, This is Gary, W7N TF, in Spanaway, WA. I have two UHF Motorola Mitrek mobiles that I was going to convert to repeater service before I got ahold of my GE Mastr-II mobiles. I may still go ahead and finish the project and keep a Mitrek for a backup repeater. Has anyone successfully converted a UHF Mitrek mobile for repeater service? Was it difficult, and what problems did you encounter? I bought a pair of rocks for one of my UHF repeater frequencies and found that one of the two Mitreks fails to transmit... The other transmits and receives ok, but still requires an alignment. I am looking for TXA, RXA, COS, and PTT connections in order to interface with my LinkComm RLC-2A or RLC-1 Plus controllers. I'd like to hear from you... Thanks.
73, de Gary, W7NTF
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Re: UHF Motorola Mitrek mobile?
I have successfully converted two UHF and one VHF mitrek radios to repeater service. 1) check out www.seits.org for info on cenversion 2) the radio's must be aligned propperly BEFORE beginning the mods. 3) the radio that is 'not xmitting' will probably come alive during the alignment process. good luck LOU<<<
-----Original Message----- From: w7ntf@... [mailto:w7ntf@...] Sent: Thursday, February 25, 1999 11:12 AM To: repeater-builder@... Subject: [repeater-builder] UHF Motorola Mitrek mobile?
From: w7ntf@...
Greetings, This is Gary, W7N TF, in Spanaway, WA. I have two UHF Motorola Mitrek mobiles that I was going to convert to repeater service before I got ahold of my GE Mastr-II mobiles. I may still go ahead and finish the project and keep a Mitrek for a backup repeater. Has anyone successfully converted a UHF Mitrek mobile for repeater service? Was it difficult, and what problems did you encounter? I bought a pair of rocks for one of my UHF repeater frequencies and found that one of the two Mitreks fails to transmit... The other transmits and receives ok, but still requires an alignment. I am looking for TXA, RXA, COS, and PTT connections in order to interface with my LinkComm RLC-2A or RLC-1 Plus controllers. I'd like to hear from you... Thanks.
73, de Gary, W7NTF
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Re: UHF Motorola Mitrek mobile?
Gary,
The Mitreks are easy to modify for repeater service. You will need to reduce the TX Power output since the heatsink is small. You will need to make a shield over the Channel Elements to get more Tx to Rx isolation. I will look up my notes and send them to you later on my duplex mods to the mitrek.
John Lloyd, K7JL
Utah VHF Society --------------------
w7ntf@... wrote:
toggle quoted message
Show quoted text
From: w7ntf@...
Greetings, This is Gary, W7N TF, in Spanaway, WA. I have two UHF Motorola Mitrek mobiles that I was going to convert to repeater service before I got ahold of my GE Mastr-II mobiles. I may still go ahead and finish the project and keep a Mitrek for a backup repeater. Has anyone successfully converted a UHF Mitrek mobile for repeater service? Was it difficult, and what problems did you encounter? I bought a pair of rocks for one of my UHF repeater frequencies and found that one of the two Mitreks fails to transmit... The other transmits and receives ok, but still requires an alignment. I am looking for TXA, RXA, COS, and PTT connections in order to interface with my LinkComm RLC-2A or RLC-1 Plus controllers. I'd like to hear from you... Thanks.
73, de Gary, W7NTF
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Re: Cushman CE6A service monitor?
Gary,
Try Triton Electronics Inc. in Rolling Meadows IL. They do repairs, alignments and calibration. I purchased the service manual (thick as a phonebook) on a CE6 from them about a year ago for about $75.
Good Luck.
Bob Loehrig
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-----Original Message----- From: w7ntf@... [SMTP:w7ntf@...] Sent: Thursday, February 25, 1999 11:18 AM To: repeater-builder@... Subject: [repeater-builder] Cushman CE6A service monitor?
From: w7ntf@...
Greetings, I have a Cushman CE6A service monitor which would prove extremely helpful in my repeater projects. Unfortunately, my service monitor is in need of repair. Additionally, I do not have any kind of manuals for the CE6A. Does anyone know of a reputable company that could restore my CE6A to operation, align to factory spec, and possibly also provide me with at least an operator or users manual?
The symptoms are that the service monitor loses lock on highband VHF and is completely unusable. Additionally, it works very poorly on the other bands.... Very poor RX sensitivity, low RF output.... etc.
I would be very grateful if someone could point me in the right direction. Thanks very much.
73, de Gary, W7NTF
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Tedd,
GE also has a version of the Motorola "extender" for Low Band.
DB Products makes a Low Band Loop Dipole that can be side mounted on a pole or tower leg. It is a DB-212. They also make a directional antenna with 1 director, the DB-225 for 5 db of gain. Db's phone number is 800-676-5342.
I would run around 50 watts with that PA. Your Transmitter duty cycle will depend on how hot the PA gets. You will need to check your system for desense when you get it all hooked up. Reduce your power until the desense goes away! Or add more isolation to your duplexer or use split antennas.
John Lloyd, K7JL
---------------------- Tedd Doda wrote:
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From: "Tedd Doda" <lazer@...>
Hi John:
On Thu, 25 Feb 1999 01:22:02 -0500, John Hackman wrote:
I expect GE has something similar, but I don't know what it's called. This will make a very great difference in the operation of your repeater. How do I find out? I used the Mitrek on 52.525 with a bunch of computers in the area, and found it to be quite quiet. My Alinco DR-M06 is horrible at noise rejection on the other hand. Both radios hooked to the same antenna (not at the same time, hi!) shows the Mitrek has a fantastic Receiver.
From all the replies I received, I get the impression that either the Master II or the Mitrek will work well.
A couple other questions.....
I purchased a commercial 1/4 wave ground plane antenna. From experience, will this suffice for the repeater, or should I look around for a better solution? The antenna will be mounted about 140 feet above ground feed with 1 5/8" heliax. I've been looking around but can't find any side mounted dipoles for 6m. Is there some other design I should look at.
The DB product duplexor has been tuned up and I got about 91 Db isolation from TX to RX. What would you recommend for maximum TX power, to keep desence to a minimum? After visiting the Master II mods page, they said that the transmitter doesn't like going below 40% of maximum TX power, and it's a 110 watt unit. Therefore, the minimum power I should set it to is about 40 to 45 watts. Is that too much?
Ideas?
Tedd Doda CET
packet va3sed@va3sed e-mail lazer@...
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