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Re: 6 meter repeater..
John Hackman
Actually, at 6M receiver sensitivity is not an issue unless there's been a
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lightning strike - the real thing to look for is, which if either unit has an RF noise blanker? The Motorola "Extender" is a terrific noise blanker that will remove all but the most horrendous of impulse noises that otherwise would destroy weaker received signals. 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. Regards, .........John WB4VVA -----Original Message-----
From: Tedd Doda <lazer@...> To: repeater-builder@... <repeater-builder@...> Date: Wednesday, February 24, 1999 6:09 PM Subject: [repeater-builder] Re: 6 meter repeater.. From: "Tedd Doda" <lazer@...>for the GE's and then have the recurring expense of replacing the driver andThat's the kind of information I was after. I thought having |
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Re: For sale
David Armstrong
David Armstrong KF4LJR
Technical Advisor, Southeastern, Division 440 Plunkett Dr. Horton, Al 35980 205-593-5321 home of the 443.725 Repeator an 53.030 How much an does it work, for the uhf master ll no pa? How much for the johnson amp? Does it work? If you like you can e-mail me here. kf4ljr@... ** ---------- From: Brent DeSalvo KF4TNP <Bug1@...><wa4qkc@...> Subject: [repeater-builder] For sale |
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Re: 6 meter repeater..
Tedd Doda
On Wed, 24 Feb 1999 14:34:41 -0500, John Hackman wrote:
I'd use the Mitrek - why beat your brains out building fan cooling, etc. forThat's the kind of information I was after. I thought having tube outputs would make it tougher? Only the old Master (1?) base unit has tubes, the Master II (mobile) is solid state. Any comment on RX sensitivity over the Master II, and the Mitrek? The donor Master II is still on 42.something, so I can't really do a fair evaluation, unless they are both inband, but I don't want to waist time (money) on rocking the MasterII if the Mitrek is more sensitive. Thanks for the help... Tedd Doda CET packet va3sed@va3sed e-mail lazer@... |
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Re: 6 meter repeater..
Tedd Doda
On Wed, 24 Feb 1999 04:45:45 -0500, edriddle wrote:
the ge master II is the best choice i think. look on the web as there is aThanks Ed. The sites address is: Great stuff, and it looks very easy to do the mod's. The Master II is tuned up on 52.525, so it shouldn't take much to get it up to 53.27 (-1 Mhz). Tedd Doda CET packet va3sed@va3sed e-mail lazer@... |
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Re: 6 meter repeater..
Ray Vaughan
At 04:45 AM 2/24/99 -0500, you wrote:
From: edriddle <edriddle@...>To be exact: The Mastr II link is at the bottom. Ray J. Vaughan, MS, CBTE KD4BBM ray@... |
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System Maintenance and Upgrade
Kevin K. Custer W3KKC
Hello,
ONElist will be down for system upgrades Wednesday evening, from 8 pm to 11 pm Pacific Time. We are increasing our server capacity to keep up with our ever increasing user base. We apologize for the inconvenience. Forwarded by: Kevin Custer, The list owner |
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Re: 6 meter repeater..
John Hackman
I'd use the Mitrek - why beat your brains out building fan cooling, etc. for
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the GE's and then have the recurring expense of replacing the driver and final tubes? In addition, the mobile power supplies are intermittent duty, so you'll have to build a high voltage power supply, as opposed to hooking up a deep cycle marine battery and an el cheapo battery charger to the Mitrek. Regards, .......John WB4VVA -----Original Message-----
From: Tedd Doda <lazer@...> To: Repeater list <repeater-builder@...> Date: Wednesday, February 24, 1999 12:47 PM Subject: [repeater-builder] 6 meter repeater.. From: "Tedd Doda" <lazer@...> |
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6 meter repeater..
Tedd Doda
Hi People:
I'm looking for information on modifing either a tube final GE Master, or a mobile Canadian GE MC74XC833A (100 watt mobile, Master II I think?)for repeater use. Which would be the better choice? I also have a Mitrek...would this be better for use in a repeater? This is my first 6 meter repeater project, and I would like to hear any thoughts on what to use. I have DB products duplexor (6 can helical resonator, notch) to use and is all tuned up and ready to go. All I have to figure out is what radio to use and how to modify it for duplex operation. Thanks kindly, Tedd Doda CET packet va3sed@va3sed e-mail lazer@... |
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Re: 6 meter repeater..
edriddle
the ge master II is the best choice i think. look on the web as there is a
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complete set of instructions to modify your rsdio. also look up the nhrc repeater controller. if you just search yahoo for nhrc it will come up and i think there is a link to the ge master II 73 ed n4ale At 12:50 PM 2/24/99 -0500, you wrote:
From: "Tedd Doda" <lazer@...> |
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Re: Terminology Page
Kevin K. Custer W3KKC
Marvin Munster wrote:
From: Marvin Munster <mmunster@...>Marvin, |
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Re: Terminology Page
de Ric KK5RIC
Reverse burst was used in the Olden Golden days of yore, when we used
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mechanical tuned reeds to decode and encode CTCSS tones. These reeds would keep running for a short time and the radio would be on open squelch, and you would hear the noise squelch close with a "Ker-Chunk" The reverse burst turned the CTCSS tone around 180 degrees and this caused the reeds to slam to a stop, causing the receiver squelch to shut before the user heard any "Ker-Chunk" RUS Receiver Un-squelched COS Carrier Operated Switch (sometimes called Carrier Operated Squelch) All standard squelch circuits have a section that will switch a voltage on or off when the squelch is opened. These voltages mute the receiver, sometimes in concert with a tone decoder. These voltages can also feed a COS or COR unit that amplifies this voltage and then sends a control signal (voltage) to a repeater controller or in the tube days the COR contacts would key the transmitter in a repeater. By adding a large capacitor on the relay coil circuit you could add a small amount of delay keeping the transmitter keyed when the receiver was receiving a weak signal that was dropping out. The COR was built with a tube 12AT7 (can not remember for sure) that took the small voltage from the receiver squelch and amplified it to turn the second side of the tube into a switch controlling the relay in the plate line of that tube section. In the early 1960s I worked on Motorola Sensicon A gear that had been built in the late 40s with just such a system. We had a remote base station on the mountain top with a 35 Mhz receiver and a 43 Mhz transmitter controlled by a 72 and 75 MHz link radios, full duplex. Rick Sohl KK5RIC At 10:00 22-02-99 -0800, you wrote:
From: Marvin Munster <mmunster@...> |
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Re: Terminology Page
Marvin Munster
How about adding "Reverse Burst" and it's explanation. I have had it
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explained a time or two, but just can't seem to grasp the concept. Marvin. At 10:34 PM 2/21/99 -0500, you wrote:
From: "Kevin K. Custer W3KKC" <kuggie@...> |
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Re: wanted / Query
Ken Whalen <[email protected]
Sorry about that,
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The Model is a CM-4000B Ken VO1ST vo1st@... On February 21, 1999 7:57 PM, Ken Whalen [SMTP:techline@...] wrote:
: From: Ken Whalen <techline@...> : : : A couple of things, : : First I'm looking for a schematic of a Power Supply for a Cushman 4000. : Perhaps someone could point me to a source of service manuals etc.. |
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Re: wanted / Query
Ken Whalen <[email protected]
A couple of things,
First I'm looking for a schematic of a Power Supply for a Cushman 4000. Perhaps someone could point me to a source of service manuals etc.. Secondly further to the recent discussion of hardwire verses RF trunking, is anyone exploring trunking via the internet? We are presently trunking through a Satellite ( www.iparn.ca ) but with the recent flurry of activity online, can anyone point me in the direction of sites that are experimenting with this.. Thanks Ken VO1ST |
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Re: For Sale Posting, and a query.
de Ric KK5RIC
Keven,
I use the term TOS to indicate some form of "Tone Operated Squelch" Ric Sohl kk5ric DE: Ric Sohl Ham Radio Call Sign: KK5RIC (Advanced Class) The REPEATER builder, my radio or yours (GE) I will build a repeater for you. New Mexico Texas HC 67 Box 157 2712 Halifax Ave Nogal NM 88341-9709 Odessa, TX 79762-8004 Odessa Hamfest: (Check both out) E-Mail: kk5ric@... Telephone: 915-556-1877 Cell All USA or 915-550-7959 Odessa Land Line 505-354-7031 Ruidoso Land Line Web Pages: Telco $0.099 service: xxxx How about $06.9 per minute : RoadTel page: Main page: ISP for $14.95 per month: Radio Call Signs: Ham: KK5RIC TX RACES Unit 42D CAP: CAP West 41 USAF/MARS AFA4ZV Aircraft: N6141F "Cool Hand" and a few others. Commercial: KQR837 KLK763 and a few others. Old Calls: ex-Texas CAP 42, ex- WB5MPX ex-XE2JZL and a few others. Remember, only radio is truly reliable during a disaster, Cellular and Internet may be a bonus, but the only communications you can depend on is radio, when the chips are down. Pursuant to US Code, Title 47, Chapter 5, Subchapter II, 227, This e-mail address is a 'facsimile receive d' as defined by Title 47 USC. Sending unsolicited commercial e-mail to this address is a violation of US Federal Law. |
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For Sale Posting, and a query.
Kevin K. Custer W3KKC
Hello All,
Because of the high rate of new users to this list (about 10 a day,) I am allowing the posting of "for sale" items twice a week instead of once a week. I will go back to once a week once the list sub rate slows down. I will let you know when (if) that happens. If you have for sale items please post again. Welcome, all you new subscribers. There are now 100 subs to this list. I also have a want. I would like a list of common terminology used in repeater service, and an explanation. Things like Ptt, Cos, PL, Channel Guard, to even more advanced things like BpBr, Desensitization, Duplexing and the such. Please email your Term and well written explanation of one or as many of these as you like. You are not limited to the ones suggested. Submit all to me directly so I can start to assemble them in an orderly fashion. These will be posted on the RBTIP site. General credit will be given to the contributing volunteers. Thanks in advance. Kevin Custer W3KKC List Owner |
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List server problems
Kevin K. Custer W3KKC
Many of you who have just joined the server had some trouble
subscribing. This message I am forwarding pertains to the situation. This message originated from the Onelist Team and has not been edited for content. This message was directed to me, the list owner. -------------------------------------------------- Hello, There was a glitch in the ONElist system from Friday evening to Saturday morning. This only affected people who tried to create lists and who subscribed to existing lists. When someone subscribed to a list, they were set to No Post, which means that they couldn't post to the list. Many people also had difficulty creating new lists. Both problems have been fixed. All subscriptions that had No Post set because of this have been fixed. Everything should be back to normal, and moderators do not have to do anything for these fixes. We take pride in our high-level of service, and we sincerely apologize for this glitch. The ONElist Team -------------------------------------------- I actually knew about the problem before this report posted and I had fixed all subscriptions to be allowed to post and not be set for Digest mode. Onelist does try to be the best online email server available at no cost. If you really want to be set for Digest mode (all html and images stripped), or No post, then send an email to me stating this. I would like to take this time to thank all of you who have decided to join, especially those in the last two days. I started this list not quite a week ago and there are already 90 subscribers. This list will succeed, not because of me, but because of you! Kevin |
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