RE: [Repeater-Builder] FCC to Deregulate Amateur Radio by 2008
Another Press Release In Limbo from the LIRPA News Agancy. Stay Tuned For More! -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of n8rqu Sent: Saturday, April 01, 2006 2:27 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] FCC to Deregulate Amateur Radio by 2008 In a bold move the Federal Communications Commission has decided to deregulate the Amateur Radio Service. This comes at a time when budget cuts within the Commission are forcing its Enforcement Bureau to shut down by 1 January 2006. A spokesperson for the Commission stated that since Amateur Radio operators are supposed to be self-policing that this new move "should not pose a problem." And that it would also "solve the whole issue of restructuring." This news has come as quite a shock to many in the Amateur Radio community, striking up many heated debates. "Basically we're being told that we're on our own as of 1 January, 2008", said a highlevel League staff member. In the interim between 2005 and 2008 Amateur Radio operators are expected to act just as they do now. "Nothing's changed yet, and all the rules and regulations are still in effect," said a spokesperson for the Commission. All of this is set to change however, starting in 2008. On 1 January 2008 Amateur Radio in the United States will cease to exist as an official radio service. At that time it will be up to the operators to make up their own rules and regulations and to enforce them. To clarify one other issue, "call signs that have not already been issued will all be available on the 'honor system'," said another Commission spokesperson. The band-plans and power limitations are expected to stay the same. Look for more information on this late-breaking news story as it becomes available. Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Quick CW ID'er
Here is an item that usually runs on eBay from N0XAS. ID-O-Matic Repeater, Echolink, Beacon, Foxhunt ID Ider: URL for current items he offers is: http://search.ebay.com/_W0QQsassZn0xasQQhtZ-1auction I have found this seller to be very honest and very eager to please. He offers a nice kit. I don't know if this is what you are looking for. I bought the older one just to have around, and it is easy to program with a terminal program and serial cable. With this setup, you could plug into the mic and speaker jacks on a HT, or a microphone jack or a mobile rig or repeater. URL to download the .pdf manual/assembly instructions: http://www.hamgadgets.com/images/ID-O-Matic-manual.pdf Hope this helps. Description below: ** NEW - just released - V2.5! Version 2.4 added courtesy beep, a repeater "beacon" timer and a separate beacon message available in repeater mode. Version 2.5 goes even further: Separate audio tones for ID and courtesy beep, PTT hang time, and a PTT "watchdog" timeout timer. All ID-O-Matics now have an on-board 5V regulator. Same price - more features! The ID-O-Matic is a multipurpose, PIC microcontroller based project that nearly everyone can use. In its most basic form, it's a simple 10-minute timer with audio and visual outputs to remind you when it's time to ID. But wait, as they say -- there's more! How about an intelligent, variable delay timer that announces your call sign or any other message, in Morse code at a speed you choose? How about CW keying and PTT outputs so you can attach it to a "fox" transmitter, Echolink setup, crossband rig or repeater? And how about inputs for squelch or COR to make a repeater IDer that works the way you want it? And how about a serial interface to connect to your shack computer, laptop or terminal? And how about a Morse keyboard mode that sends text from your keyboard in Morse code? It's all there. Sorry, no Ginsu knives or fruit peeler included. The ID-O-Matic can meet a pretty wide range of needs. Out of the box, so to speak, it makes a nice little 10-minute ID reminder. It will light up a green LED until nine minutes have passed. The LED then turns yellow, and at 9 minutes 30 seconds starts blinking yellow/red. At ten minutes the ID-O-Matic beeps at you until you reset it with the pushbutton, then starts over. Using the built-in RS232 serial interface, connect it to a terminal or a PC with a terminal emulation program (Procomm, Hyperterminal, etc) and you can use the very simple menu interface to set your own delay from 1 second to over 9 hours - no programming or special software required. You can control when (and if) the LED turns yellow and when it starts blinking. You can also choose between the default beep, or just type in your call sign or any other message up to 64 characters long to hear it in Morse code. When in CW ID mode, ID-O-Matic will send the message, then automatically reset and start timing again. You can also select repeater mode. In repeater mode two additional inputs can be used to control when ID-O-Matic sends your Morse code ID. You can use a squelch, COR, PTT or other signals of your choosing. You can also choose to have the ID-O-Matic announce at set intervals even on a quiet channel; for example, ID every 10 minutes while the repeater is in use, and once per hour when it's idle. There's even a second beacon message available, in case you want a short ID during use and a longer message (for example, call sign and location) when the repeater is idle. The ID messages and courtesy beep can have different audio tones from 250Hz to 3kHz, and there's a user-settable "watchdog" PTT timer to keep stuck mics or long-winded users from hanging up the repeater or link. In Morse keyboard mode, text you type is sent in Morse using the speaker, CW and PTT outputs. Letters A-Z, numbers 0-9, AR, BT, SK and punctuation ( . , / ? @ ) can be sent (yes, even the new @ sign). You can also use the + and - symbols to increase or decrease the code speed in the middle of a message if you want. Regardless of the mode used, the PTT output is active 500ms before and 100ms after the CW ID, and the CW output can be used CW transmitters, tone generators, etc. Both PTT and CW outputs have open-drain MOSFETs rated for 60V. Speed is variable from 5 to 60 words per minute, and the audio pitch is also variable via the menu. This auction is for the ID-O-Matic kit that includes the ID-O-Matic chip along with a high quality, double-sided PCB with silkscreen and solder mask, female DB9 serial connector, all needed resistors, capacitors, and transistors along with a dual-color LED and the same little micro speaker used on the PicoKeyer kit (the speaker mounts off-board). There's an on-board voltage regulator so you can use a convenient power source like your 12V shack supply. All you need to supply is a project box, DC power source, and a couple of switches. This is a kit, and
RE: [Repeater-Builder] Motorola Radio ID
Southern Linc is a Nextel-Like LMR network with cellular option. It is a part of the "Southern Company" which also includes Savannah Electric and Power Company (among other holdings). It is up for refarming, as is Nextel, due to the Public Safety spectrum that it occupies. Treat it as a Nextel Mobile Base Station. I doubt there is any difference other than the codeplug, as you can "unlock" most of their phones to be used on either Nextel or Boost (the prepaid Nextel). -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Don Sent: Tuesday, March 14, 2006 2:41 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola Radio ID I saw this Posted a SOUTHERN LINC MOTOROLA MOBILE BASE STATION is this Some Special Motorola radio You All Down south Use and is named after You, Only kidding but I have never heard of this Model. What is it ? Thanks Don KA9QJG Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] ICOMS - Update
Update on what is available. I have pulled the ones requested so far. Please bear with me, as I had promised a list member from the previous list I would let him know when I had more available, and he is getting this info simultaneously with the rest of the list. I would like to make sure he has first refusal. I hope to be able to continue to gather items like this to offer to the group. I have the following GE ICOM units up for grabs: (2) EC - T154.770 (2) EC - T154.935 (2) EC - T155.685 (1) EC - R155.490 (1) EC - 153.770 (1) 5C - R158.835 (1) 5C - R154.385 Also, still have a 123.0 Hz reed from last time up for grabs. These are available for anyone who needs them. (Coy, please email your mailing address for the EC you need) Try to spread them around. I will pay postage. All I ask in return is for you to donate to the upkeep and availability of the Repeater-Builder site. Honor System - Let you conscience be your guide. The "Donate" button can be found at the following site; for both PayPal and Credit Cards. http://www.repeater-builder.com/rbtip/ post reply to [EMAIL PROTECTED] I hope others will continue this offer with items they think others may use David KD4NUE Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Alinco Ham Repeater??????
I certainly agree that the portable setup is a great idea. (The following in anecdotal; from a source I usually find to be accurate). Motorola sent a number of Semi Trucks to the Katrina area. Each had a number of trailer mounted, battery operated repeaters, with telescoping masts. They were on individual single-axle trailers with lifting eyes designed to be hoisted on top of existing infrastructure, or used standalone. The battery life was projected to be over a week. Technical staff was sent along to help in setting them up for whatever application they were needed. It was a total-loss contribution. FEMA Met them at the state line and turned them away, as Martin Marietta was the FEMA contractor of record. Martin Marietta responded by sending a large quantity of unprogrammed radios, with a large bill attached. No good deed goes unpunished. Portable units like yours would have been welcomed; as well as any impromptu form of communications. We all would have been welcomed. We all hope that a disaster of the magnitude of Katrina/Rita never comes to our towns. I hope we all spend a little bit of time considering how to best respond. I know this is off topic, and I am very guilty of extending it out, in both magnitude of posts and further veering off course of the original topic. Apologies to all, David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of mch Sent: Tuesday, February 21, 2006 5:38 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Alinco Ham Repeater?? Most bands don't use a 600 kHz split. Why does everyone assume any communications will HAVE to be on 2M? As for the tower, it doesn't have to be on a tower, but many companies make portable towers or even telescopic poles. If you are ever able to attend the Dayton Hamvention, you will see a ton of them. Several of them had VERY large HF antennas on them (such as a 3-element 40M beam). As for explaining loss of communications, ask them if they know what the first priority in a military action is (hint: it's take out their communications). Ask the FDNY about their communications on 9/11. I'm sure a 2W portable repeater on any of the other nearby rooftops would have been more than welcome. It sure beats simplex on a portable. Not everyone has high buildings, but most have good repeater locations. Your backup repeater doesn't have to have coverage equal to the repeater it replaces, but it should be ready to 'plug and play' without having to build it first. It doesn't have to use a Stationmaster. It doesn't have to run 250W output. The point is that you can build an inexpensive portable repeater out of quality components (100% duty cycle) far ahead of the time you need it. Joe M. [EMAIL PROTECTED] wrote: > > I don't have a suitcase large enough to carry a repeater with > duplexers suitable fot a 600KHz split. > > I am sure that something could be assembled with low enough output to > handle the mobile duplexers that are so abundant for VHF; thre ones > designed for a 5 MHz split. However, I can't see the beauty of a > portable repeater that is 100% duty cycle at 2 watts output. Even if > you were able to get the power output to a level as high as 10 to 20 > watts, that portable tower structure is what I would like to hear > about. > > I would like to see our community reach that level of preparedness; or > concern. I will try to bring it up as an item to be budgeted for in > the next LEPC (Local Emergency Planning Committee) meeting I attend. > I can't quite figure out how to explain to them that they need this > item to correct a situation where their repeater was blown off the > face of the earth, but the antenna and tower connected to it were > un-harmed. > > For the meantime, a few of us have looked at a number of sites within > the city and county with the resources necessary to put up a linked > system; on demand. What we lack in pre-assembled solutions for > unpredictable situatuions, we make up for in redundancy and ability to > cobble something together after the fact. BTW, these are mere fellow > Hams, who have the gear in their shack to do the dirty deed. Not > everyone in the community is an accomplished repeater jockey. > > I do have to agree, in a perfect world, there would be a pre-assembled > solution for every situation. > > However, I will always consider the major part of response to be the > ability to use the resources at hand; in concert with what you were > able to bring with you. My idea of proactive preparedness to disaster > is for disaster not to occur. Disaster, by it's very nature, is not a > predicitable circumstance. > > And FWIW, I would probably do better in disaster response with a few > guys able to cobble together a working setup from what is available; > in a dynamic situtation, rather than a team of specialists whose > off-the-shelf dependency was blown into
[Repeater-Builder] Once Again: Free Offer for GE Builders
I have the following GE ICOM units up for grabs: (2) EC - T153.770 (2) EC - T154.935 (2) EC - T154.905 (2) EC - T155.685 (1) EC - T156.000 (2) EC - R159.150 (1) EC - R159.210 (1) EC - R155.490 (1) 5C - R158.835 (1) 5C - R154.905 (1) 5C - R159.210 (1) 5C - R154.385 These are available for anyone who needs them. (Coy, please email your mailing address for the EC you need) Try to spread them around. I will pay postage. All I ask in return is for you to donate to the upkeep and availability of the Repeater-Builder site. Honor System - Let you conscience be your guide. The "Donate" button can be found at the following site; for both PayPal and Credit Cards. http://www.repeater-builder.com/rbtip/ post reply to [EMAIL PROTECTED] I hope others will continue this offer with items they think others may use David KD4NUE Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: Wierd Antenna Ideas (Was RE: [Repeater-Builder] Alinco Ham Repeater?)
I have been looking at taking a single cavity tuned to TX, and a single cavity tuned to RX to lessen separation needed. This for a firepower installation with no duplexers. I am also looking at using a VHF Engineering (OK, poor choice) with the PA Removed and mobile duplexer as a mobile repeater on out Red Cross Comm. van. This will yield around 2 watts into the mobile duplexer. It should cover a recovery village. In addition, low power FM broadcast station being considered also. The experimenting we do in times of calm gives us an idea of what may work in time of need. More in line with your idea would be a TX antenna on top of a water tower and an inverted RX antenna below the tower. Not near perfect, but with a pair of the $25.00 Radio Shack scanner antennas, it is an easy restoration for a repeater lost to storm damage, and using parts that are easy to store unassembled. There is still that feedline issue to deal with In all of these cases, we are not dealing with perfect solutions. The concept is making the best you can with available materials and remaining infrastructire. David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Kris Kirby Sent: Tuesday, February 21, 2006 4:20 PM To: Repeater-Builder@yahoogroups.com Subject: Wierd Antenna Ideas (Was RE: [Repeater-Builder] Alinco Ham Repeater?) On Tue, 21 Feb 2006 [EMAIL PROTECTED] wrote: > I am sure that something could be assembled with low enough output to > handle the mobile duplexers that are so abundant for VHF; thre ones > designed for a 5 MHz split. However, I can't see the beauty of a > portable repeater that is 100% duty cycle at 2 watts output. Even if > you were able to get the power output to a level as high as 10 to 20 > watts, that portable tower structure is what I would like to hear about. What if you took two 1/4 wave ground planes, mounted the RX antenna up top, fed with hardline, and mounted the TX antenna pointing down, 1/2 wavelength (or 4/2 wavelegths) down from the mounting point of the first antenna? This, it would seem, would put the image of the antenna 180-out from the first antenna, plus the isolation of having to go through a common ground surface as it were. That might give you a few DB of seperation, if there aren't too many near-field or far-field reflections to have to overcome. -- Kris Kirby, KE4AHR <[EMAIL PROTECTED]> "BIG BROTHER IS WATCHING YOU!" This message brought to you by the US Department of Homeland Security Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Alinco Ham Repeater??????
I don't have a suitcase large enough to carry a repeater with duplexers suitable fot a 600KHz split. I am sure that something could be assembled with low enough output to handle the mobile duplexers that are so abundant for VHF; thre ones designed for a 5 MHz split. However, I can't see the beauty of a portable repeater that is 100% duty cycle at 2 watts output. Even if you were able to get the power output to a level as high as 10 to 20 watts, that portable tower structure is what I would like to hear about. I would like to see our community reach that level of preparedness; or concern. I will try to bring it up as an item to be budgeted for in the next LEPC (Local Emergency Planning Committee) meeting I attend. I can't quite figure out how to explain to them that they need this item to correct a situation where their repeater was blown off the face of the earth, but the antenna and tower connected to it were un-harmed. For the meantime, a few of us have looked at a number of sites within the city and county with the resources necessary to put up a linked system; on demand. What we lack in pre-assembled solutions for unpredictable situatuions, we make up for in redundancy and ability to cobble something together after the fact. BTW, these are mere fellow Hams, who have the gear in their shack to do the dirty deed. Not everyone in the community is an accomplished repeater jockey. I do have to agree, in a perfect world, there would be a pre-assembled solution for every situation. However, I will always consider the major part of response to be the ability to use the resources at hand; in concert with what you were able to bring with you. My idea of proactive preparedness to disaster is for disaster not to occur. Disaster, by it's very nature, is not a predicitable circumstance. And FWIW, I would probably do better in disaster response with a few guys able to cobble together a working setup from what is available; in a dynamic situtation, rather than a team of specialists whose off-the-shelf dependency was blown into the next county. The Hams that put up a wireless network to have connectivity in the early stages of Katrina response are my kind of guys. They didn't come imn with infrastructire and nothing to connect it to. They restored connectivity from the ground up. And, they only came to provide Amateur Emergency Communcations. A dozen suitcase repeaters couldn't link the agencies together that needed computer network communications. Those were my kind of guys; simply not prepared YMMV David -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of mch Sent: Tuesday, February 21, 2006 6:57 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Alinco Ham Repeater?? Then there is the proactive approach rather than the reactive approach which you describe. In the proactive approach, you will have a repeater set up and ready to go - a GOOD repeater that can handle emergency duty cycle which typically is much closer to 100%. This repeater will be stored in a suitcase or something and be ready to go within minutes. The LAST thing I want to rely on in an emergency is a 'thrown together' repeater that may fail at any time. Disaster preparedness is NOT the ability to make something after you need it. Joe M. [EMAIL PROTECTED] wrote: > > Equally, there are no scheduled disasters, diasaters don't have a > specified length, and disasters aren't catogorized as caused by > American Acts if God, or Jap Acts of God. The ability to use 2 > transcivers to make an quick repeater using the data jack is a useful > tool. Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Solar-Wind Powered Repeaters
Title: Message In the message below, I was referring to a charge controller for solar use, not a perpetual motion machine like in the link. I believe I built it from an article in Electronics Now (Quite a few years ago)... -Original Message-From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]Sent: Monday, February 20, 2006 5:34 AMTo: Repeater-Builder@yahoogroups.comSubject: RE: [Repeater-Builder] Solar-Wind Powered Repeaters The ones I have seen in the past were low current draw with an operating voltage in the ttl level range (at or near 5 v). It takes a lot of discharge to bring a 12 volt battery with anything more than minimal a plate area from 12.52 volts (minimum voltage for a battery at "idle" before needing re-charge) to below 5 volts. The 12.52V figure will be challenged, and likely isn't pertinent today; merely given as the benchmark that Johnson Controls and Sears Automotive Training used in their presentations about lead-acid batteries of the early 1980s. I'm not saying that it isn't possible for someone to find a way not to get it to work... Murphy is a Full-Time employee and is ACLU Compliant - Never discriminates. A few weeks of very cloudy weather, inefficient solar panel(s), bad cell(s) in the battery, etc. could deeply discharge a battery. anything is possible. There are no free lunches, and there is no 1 to 1 mechanical advantage. However, if your repeater eats light, and Mother Nature cooperates, this design is reported to work. FWIW, David KD4NUE -Original Message-From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of DickSent: Monday, February 20, 2006 3:25 AMTo: Repeater-Builder@yahoogroups.comSubject: Re: [Repeater-Builder] Solar-Wind Powered Repeaters This gadget is gonna charge the batteries, then use power from the batteries to run itself? Sorry, folks, but all my electrical engineering background says no way. There's no free lunch. Dick - Original Message - From: Dakota Summerhawk To: Repeater-Builder@yahoogroups.com Sent: 19 February, 2006 22:32 Subject: RE: [Repeater-Builder] Solar-Wind Powered Repeaters Found this while browsing for generators:http://www.lutec.com.au/index.htmMight be a good idea for remote repeaters other than wind or solar.Dakota Summerhawk Yahoo! Groups Links<*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/<*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED]<*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Alinco Ham Repeater??????
On Tue, 21 Feb 2006, Q wrote: > Fellows...think about this,seriously! There are NO japanese mobile > radio > transmitters rated for 100% duty cycle,most are 20%! What happens when > they overheat? Before they blow up,they put out spurs and junk all over > the spectrum! Adding a fan will help,but only delays the inevatible > failure. Now on to the receiver...most are designed to be > broadbanded,have lousy front ends and mixers,are prone to overload and > intermod,not what you want. Why would you spend hundreds of dollars on a > pair of mobiles when the commercial surplus is available cheaper? You > know-THE RIGHT TOOL FOR THE JOB!!! I am not just saying this to be > mean,I have lived it! I have built repeaters out of the strangest things > and learned what works best at the most reasonable price. Leave your > mobile rigs in your mobile stations! The right "tools" are out > there73,Lee Equally, there are no scheduled disasters, diasaters don't have a specified length, and disasters aren't catogorized as caused by American Acts if God, or Jap Acts of God. The ability to use 2 transcivers to make an quick repeater using the data jack is a useful tool. I still run an Alinco DR-570 as one of my Crossband rigs. It is quite old, and has been through a lot of abuse. I bought it 3rd hand. In a pinch, I use one of my 2 Alinco DJ-580 Handhelds (They have crossband repeat also). I bought one of them new in 1993. The other was a basket case that I put back to gether. I also use a Kenwood TM-V7 and a Yaesu FT-8900. In comparison, using a Midland 70-0520CWB with a 70-2959-1 Vehicular Repeater option (50 to 110W output on 6m) as a transmit station in conjunction with a Kenwood TS-2000 at a remote site as receiving unit on a one way cross band linked system resulted in tremendous heat from the Midland; even at the 50 watt level. Using the Yaesu 8900 or the Kenwood V7 at lower wattage levels yielded a muchlower operating temp. The Midland LMR setup would not go be low 50W and the Ham rigs would operate at 5W. At the operating levels built in to be user controlled, the LMR product offered less power control and more heat, WHEN USED FOR SOMETHING OTHER THAN WHAT IT WAS INTENDED FOR. I am sure the same can be said about Jap/Ham units used for projects they weren't designed for. If someone wants to use the DR-X35 series for repeater operation, that is certainly their decision. I wouldn't try to move a mountain with motorcycle, nor would I use a D9 Cat to clean up after my dog (he is just not that big). In other words, some community repeaters may only need 20% worth of duty cycle, as they only get used 5% of the time. In some areas, some folks talk a lot more, and there may be a lot more of them to talk. Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Solar-Wind Powered Repeaters
Title: Message The ones I have seen in the past were low current draw with an operating voltage in the ttl level range (at or near 5 v). It takes a lot of discharge to bring a 12 volt battery with anything more than minimal a plate area from 12.52 volts (minimum voltage for a battery at "idle" before needing re-charge) to below 5 volts. The 12.52V figure will be challenged, and likely isn't pertinent today; merely given as the benchmark that Johnson Controls and Sears Automotive Training used in their presentations about lead-acid batteries of the early 1980s. I'm not saying that it isn't possible for someone to find a way not to get it to work... Murphy is a Full-Time employee and is ACLU Compliant - Never discriminates. A few weeks of very cloudy weather, inefficient solar panel(s), bad cell(s) in the battery, etc. could deeply discharge a battery. anything is possible. There are no free lunches, and there is no 1 to 1 mechanical advantage. However, if your repeater eats light, and Mother Nature cooperates, this design is reported to work. FWIW, David KD4NUE -Original Message-From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of DickSent: Monday, February 20, 2006 3:25 AMTo: Repeater-Builder@yahoogroups.comSubject: Re: [Repeater-Builder] Solar-Wind Powered Repeaters This gadget is gonna charge the batteries, then use power from the batteries to run itself? Sorry, folks, but all my electrical engineering background says no way. There's no free lunch. Dick - Original Message - From: Dakota Summerhawk To: Repeater-Builder@yahoogroups.com Sent: 19 February, 2006 22:32 Subject: RE: [Repeater-Builder] Solar-Wind Powered Repeaters Found this while browsing for generators:http://www.lutec.com.au/index.htmMight be a good idea for remote repeaters other than wind or solar.Dakota Summerhawk Yahoo! Groups Links<*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/<*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED]<*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Alinco Ham Repeater??????
FWIW: I asked the seller about Controller functions on the 2m (DR-135) pair, and this was the reply: "Hi, The interface included does to have a roger beep or time out timer or delay, it's just an simple interface. We have this repeater available with the CAT 200B controller for $979.00." Just a fyi David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ellen Engle Sent: Sunday, February 19, 2006 9:03 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Alinco Ham Repeater?? I would say that the price is a bit high for what are described as 2 mobiles with no duplexer and no mention of a controller. I was looking at the DRx35 series radios as candidates for just such a setup for temporary crossband repeaters. They look interesting. Milt N3LTQ - Original Message - From: "ochf13" <[EMAIL PROTECTED]> To: Sent: Sunday, February 19, 2006 2:03 AM Subject: [Repeater-Builder] Alinco Ham Repeater?? > Hello, > Has anyone built a repeater using two DR-135, DR-235, DR-435? I was > looking on EBAY and say them. Current EBAY item number is 5869101543. > I would guess to say would be eazy to build since db-9 to controller? > > Chris > NH7QH > > > > > > > > > Yahoo! Groups Links > > > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.375 / Virus Database: 267.15.11/264 - Release Date: 2/17/06 > > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.15.11/264 - Release Date: 2/17/06 Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Alinco Ham Repeater??????
Should be simple. RX audio out, TX Audio In, Ground and COS voltage. Both 1200 and 9600 BPS data out, so I believe you would have a choice of conditioned or unconditioned audio. Two transistor switches and some audio level matching and you are cross-linked. The same cable could go between any DR-x35 rigs. Same situation for data out connectors (mini DIN) on Yaesu and Kenwood. I have taken part in and witnessed in-band repeater using 2 Yaesu FT-1500 and split antennas at the same site. A 20.00 fox-hunt IDer kit will add the minimal daily requirements for ID, Courtesy tone, etc... Needless to say, this is not a 100% duty cycle device, but low power operation will allow it to go a long way. One-way Cross-banding or linked sites running a one-way repeat setup greatly reduce heat build-up and high duty-cycle. In addition to building repeaters, isn't this the experimental communication back-up systems that is a vital part of our involvement in Ham radio? I have had a lot of fun and it has been a real learning experience - Trying to exhast all the possible cross-band and linked system operation avaialble with off-the-shelf radios. David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ellen Engle Sent: Sunday, February 19, 2006 9:03 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Alinco Ham Repeater?? I would say that the price is a bit high for what are described as 2 mobiles with no duplexer and no mention of a controller. I was looking at the DRx35 series radios as candidates for just such a setup for temporary crossband repeaters. They look interesting. Milt N3LTQ - Original Message - From: "ochf13" <[EMAIL PROTECTED]> To: Sent: Sunday, February 19, 2006 2:03 AM Subject: [Repeater-Builder] Alinco Ham Repeater?? > Hello, > Has anyone built a repeater using two DR-135, DR-235, DR-435? I was > looking on EBAY and say them. Current EBAY item number is 5869101543. > I would guess to say would be eazy to build since db-9 to controller? > > Chris > NH7QH > > > > > > > > > Yahoo! Groups Links > > > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.375 / Virus Database: 267.15.11/264 - Release Date: 2/17/06 > > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.15.11/264 - Release Date: 2/17/06 Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] dumb as mud
I use the weekly area 2m net to help others understand what a repeater is, the proper way to announce your call, unkey, then continue when checking in on a net, or in Simplex operations. It is integrated into the script, and there is always time set aside for questions, additions or corrections to the script. Some folks, no matter how hard you try to explain, just won't ever grasp the concept of what a repeater does, and how it does it; but we keep hammering at it in an attempt to lessen their numbers. Self-Policing is a good policy. Promoting proper operation; both routine and emergency oriented is also a great use of spare time. I try to use the net to explain every aspect of the script, what the purpose is. Same in a drill. While announcing that it is only a drill, I try to explain why the check-ins are valuable, and what we would expect in an actual situation. We also have used 3rd party traffic to try to give others in the community (Fire Chief, Hospital Security, Red Cross, etc...) the chance to actually check in to out drill net via roving hams dispatched to provide a 2-way link direct from agency to agency. In actual emergency, a mobile rig in 2 key locations could restore some form of communications just using 3rd party traffic. It is a death blow to those yellow tablets of NTS sheets, and much more efficient for inter agency communications restoration. We already have a number of sites within our area that can be a link in a dual-crossband repeater on a moment's notice; on back-up power, capable of restoring local communications in the event of repeater failure. Some of the new hams have never taken part in any net or drill other than the official ARES weekly, and some of those nets that I have heard have been a bit dry and mechanical. The local ARES net here gets 5 or 6 check-ins and lasts 10 minutes. On the same repeater, at the same exact time, on a different night, I get 15 to 20 check-ins on a simple area net that usually last over an hour. Each check-in gets a chance to comment, ask questions, make suggestions. We also set aside a time in the script for Simplex and Crossband check-ins I am getting over 25% in Simplex check-ins, and over 50% on emergency, or backup power. And the most important thing is that those making their station efficient enough to use simplex and operate on backup power understand why they are doing so. David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Kris Kirby Sent: Friday, February 17, 2006 2:35 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] dumb as mud On Thu, 16 Feb 2006, Nate Duehr wrote: > It's rampant. I'd easily estimate that 1/4 of our members don't > really > "get" how a repeater works. > > "You're 20 over 9 here!" I think I've heard something similar on the air here; one station was doing the drawn-out calling that you'd do for a contest working a station in the mud over a repeater. I hope someone clues him in.. If I get a chance next time, I'll pull him off-line and chat with him. Self-policing... I know that I probably violate a lot of what I was taught, but there is something to using a little procedure; it makes things a little more professional, even if the professional radio operator is a endangered species. -- Kris Kirby, KE4AHR <[EMAIL PROTECTED]> "BIG BROTHER IS WATCHING YOU!" This message brought to you by the US Department of Homeland Security Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: What is A Repeater?
The preamp that is present in all Midland LMR microphones from at least the Syntech I era through the XTR to Syntech II era was included in the microphone from the design to production to distribution to provide maximum intelligibility; not increasing button count. It is transparent to the user. Ask anyone who has tried to use a non pre-amplified microphone on one of the Midlands what their success rate is. There is slight noticable difference between AM and FM radios and how they treat the information sent from the microphone.In FM, the audio shifts the frequency. In AM, it provides information on the carrier. It is much more likely that the AM operator may see the need for audio "tailoring" via the microphone, and it is highly likely that there would be some device to interface the operator's appendages to the tailoring circuitry. In plainer english, there are "knobs and buttons" in in most applications tha require himan intervention to make them work as designed. It might be a toss-up as to where the most amplified D-104 microphones are used; on 11m or HF in general. For the most part, those who ridicule past CB operators the most, do so to QRM the memory of themselves having operated there in the past. This is kinda like the reformed smoker. He did it for 40 years, now has quit for 2 months and can't stand to be around anyone who has walked through second hand smoke in the last week. Here is another rhetorical question: Why do we, as Hams, have to excell in the art of ridicule for others? Wouldn't it be time better spent in trying to improve out operating procedures/habits; rather than marginalizing those of others that may remind us of ourselves years ago? (Now, lets see who screams loudest about never been on 11M at anytime in their life. Some will be able to recall time spent in the womb to empathsize their denial). David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Dave VanHorn Sent: Saturday, February 18, 2006 4:20 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: What is A Repeater? > > why do Hams NOT use an amplified microphone in the > > FM mode > > Most of my fm radio mics are amplified. Most of yours > are probably amplified with an electret element. But not nearly enough buttons and knobs! :) Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] VHF Seperation
Commmshop reports that with these tx and RX freqa, power at 100 Watts, Receiver 12dB Sinad point .2uV : Duplexer or cavity will require 51.9 dB isolation to not degrade RX sensitivity Antennas separated 26 feet vertically of 314 feet horizontally will provide the required isolation. This will depend on antenna, tower, terrain, buildings, feed-lines, etc. MUCH NEEDED Disclaimer: Use the above for rough planning. Obtain the services of a professional for site survey and implementation. The above info merely provided to give a starting point and is not to be considered accurate for every installation. -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Nate Duehr Sent: Friday, February 17, 2006 6:09 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] VHF Seperation [EMAIL PROTECTED] wrote: > Could anyone give me some advice regarding antenna seperation for a > VHF > Repeater... Using TX of 152.000 and RX of 159.000, what would the min. > vertical and horizontal be? For what power level? Need to know your power level to know how many dB of separation you need. If you have the right duplexer on the thing, you don't need separate antennas. Etc. Etc. Etc. Your message is far too vague to help you much, and theoretical numbers never match the real world. Nate WY0X p.s. And my standard disclaimer applies when I see commercial frequencies in any posting on Repeater Builder: Don't trust an Internet mailing list if that system is involved in Public Safety. Hire a professional RF engineer. Mailing lists aren't the right place to be asking (unless you're just using it as a general reference and you already have an engineer) commercial RF design questions. Amateur? Sure. Commercial? Nope. Opinion? Yeah. Facts? Hire someone local who knows the other aspects of your site, can handle designing for things like intermod, site noise floor, and all the other variables you didn't share. Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Failure to communicate.....
Try "Turn up your RF Gain, you arent using enough power to get into the repeater" David -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Paul Finch Sent: Friday, February 17, 2006 10:46 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Failure to communicate. Or turn up your squelch, I can't hear you is another one! Paul -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of Jim B. Sent: Friday, February 17, 2006 8:22 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Failure to communicate. Bob M. wrote: > "Hams that already know everything..." > > I think I've met a couple of those. They're the ones who tell you to > scrape all that ugly protective copper coating off the 1/2 inch Heliax > before you solder the center pin onto it. > > They're the ones that tell you "All the connectors on that thing over > there were loose, so I tightened them all up for you" and then you > find out that "that thing" was the hybrid ring duplexer on 2 meters, > and the "connectors" were the tuning rods that are now all the way > down into the cavities. > > They're the ones that tell you to put two 100 watt amplifiers in > series so you get 200 watts to the antenna. Ahh yes-the "tinfirgudbudy" crowd. Or as we like to call them, the 'light-bar brigade'. "Turn up your volume. I can't hear you"... |cP -- Jim Barbour WD8CHL Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: Failure to communicate.....
This is where the rubber meets the road as to the "problem with Ham Radio" As it has been stated before, Ham Radio seems to gather the most self-centered, egotistical, elite minded group of people who are the poorest of communicators.. Each one should have been required to take a Semantics course in order to not only understand the concept of word meaning, but how delivery affects the message. If you can't get the concept from you brain to words, and deliver those words without clouding them so much with your own bias that they are received poorly at the other end; you simply can't communicate. This is the most rudimental communications model there is, and nowhere is it included in the testing material. There are a lot of truly great folks involved in Ham radio. However, those who have the worst attitudes are often the ones chosen to interface with potential hams either on the Cram-Course or testing level. This is precisely where we need the best communicators amongst us, ass well as those who understand the testing rules and don't introduce their own bias as fact. The CW issue in an emotionally driven one. There are few among us that can address it rationally in conversation with someone having an opinion that is counter to our personal one. This isn't likely to change. When I hear of a VE changing the rules to meet his/her own personal bias, I am again reminded of the very reason we aren't attracting the young, technically competent minds that are available - to the Amateur Radio Service. I would be willing to set up a digital station, build a data slicer, explain serial communications hardware, IRQ priorities, discuss the importance of proper ground potential when operating logic-based equipment, talk about haw communications theory (of delivering the spoken or written word) is more important in getting the message through the mental QRM. Any of these things other than CW to advance from Tech Lite to a "higher" class. However, that isn't an option. I am smart enough to repair their rigs (sometimes), but not qualified to check them out on the air when they are working. Helluva Concept; this communications thing... David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Dave VanHorn Sent: Friday, February 17, 2006 8:36 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Failure to communicate. >Yup, a sheet full of dots and > dashes. Then she went back and translated each Morse character to >it's appropriate letter, number, or punctuation. As far as I'm aware that's legal per the FCC. It's not up to the VE groups to arbitrarily tighten the requirements or change the testing procedures. Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Best Place to by MRFXXX power devices
Title: Message I ordered a set of 2SC1972 and a 2SC1971 from them around last Tuesday (2/07), Delivery is scheduled (via UPS) on the 16th of this month. I know these weigh in under a pound and Priority Mail would have it here in 3 days foor around $4.00. I am betting UPS charge will be around $8.00 and 3 times the delivery time. I hope the transistors are more efficient than their shipping processing. David KD4NUE -Original Message-From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Mark A. HolmanSent: Monday, February 13, 2006 8:30 PMTo: Repeater-Builder@yahoogroups.comSubject: Re: [Repeater-Builder] Best Place to by MRFXXX power devicesI just ordered some stuff there apparently I was told the Engineer is unavailable, and someone else is moving to another office I asked for an email confirmation I will hope to get my parts @ the end of this week. So we will wait - n - see .mark h. ab8ruDCFluX wrote: RF parts has a good selection of parts in stock, but their shipping leaves a little to be desired. On 2/13/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: I need to buy a replacement for a MRFXXX device I blew up over the weekend. I know RF Parts has these, but have no experience with them.Is there any other place you guys have used that you would recommend?RogerW5RDRoger WhiteMurphy, TexasYahoo! Groups Links<*> To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/<*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED]<*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- MZ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Re: UHF Power
I could fix that problem with a short piece of Scotch 33 Black over the reporting station's S-Meter :) Mike Morris wrote: > Based on the reports, the 6" to 9" high weeds were having an effect > best described as being anywhere between -6db and +10db. > > Mike WA6ILQ > >> Mike Morris wrote: >>> Locally the Forest Service requires twice a year weed whacking >>> around the building. So we go up, open the door, plug in the >>> extension cords, do the deed, and leave. Then we announce that we >>> spent all day working at the site (but we don't say what we did). >>> >>> It's amazing the reports we get... >>> >>> Mike WA6ILQ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: GE Builders - Icomcs and Reeds
It is yours. Please send the mailing address to my email address; either the one in the header or to [EMAIL PROTECTED] The Icoms and the 103.5 reed are spoken for. The 123.0 reed is still available. David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Coy Hilton Sent: Saturday, February 11, 2006 12:14 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: GE Builders - Icomcs and Reeds I would like the have the 103.5 reed, please AC0Y --- In Repeater-Builder@yahoogroups.com, <[EMAIL PROTECTED]> wrote: > > I have the following available that I don't see any future need for: > > Reeds > > 103.5 Hz PL19B205280G7 - 7 pin plug-in similar to miniature tube > 123.0 Hz PL19B205280G12 - 7 pin plug-in similar to miniature tube > > ICOMs > > EC > ICOM > R158.970 > 16418.888 > PL19A1298393G7 > > EC > ICOM > T158.970 > 13247.500 > PL19A129393G17 > > 5C > ICOM > R159.450 > 16472.222 > PL19A129393G11 > > EC > ICOM > T159.4500 > 13287.500 > PL19A129393G17 > > > These are available for anyone who needs them. > > I will pay postage. > > All I ask in return is for you to donate to the upkeep and availability > of the Repeater-Builder site. > > Honor System - Let you conscience be your guide. > > The "Donate" button can be found at the following site; for both PayPal > and Credit Cards. > > > http://www.repeater-builder.com/rbtip/ > > post reply to [EMAIL PROTECTED] > > I hope others will continue this offer with items they think others may > use > > David > KD4NUE > Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] controller question
Disregard my response. I didn't read the original post well enough before replying. -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Chris Sent: Thursday, February 09, 2006 10:21 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] controller question Is there a repeater controller that I could use to tie an Echolink and IRLP together with? One that doesn't cost an arm and a leg? Chris KA7CJH Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] controller question
I think the WB2REM G4CDY Ultimate Linking Interface (ULI) will do what you want. www.ilinkboards.com http://www.ilinkboards.com/indexuli1.html Hope this is what you are looking for. David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Chris Sent: Thursday, February 09, 2006 10:21 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] controller question Is there a repeater controller that I could use to tie an Echolink and IRLP together with? One that doesn't cost an arm and a leg? Chris KA7CJH Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] GE Builders - Icomcs and Reeds
I have the following available that I don’t see any future need for: Reeds 103.5 Hz PL19B205280G7 - 7 pin plug-in similar to miniature tube 123.0 Hz PL19B205280G12 - 7 pin plug-in similar to miniature tube ICOMs EC ICOM R158.970 16418.888 PL19A1298393G7 EC ICOM T158.970 13247.500 PL19A129393G17 5C ICOM R159.450 16472.222 PL19A129393G11 EC ICOM T159.4500 13287.500 PL19A129393G17 These are available for anyone who needs them. I will pay postage. All I ask in return is for you to donate to the upkeep and availability of the Repeater-Builder site. Honor System – Let you conscience be your guide. The “Donate” button can be found at the following site; for both PayPal and Credit Cards. http://www.repeater-builder.com/rbtip/ post reply to [EMAIL PROTECTED] I hope others will continue this offer with items they think others may use.….. David KD4NUE YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] KINDA OFF TOPIC NEED WAVETEK CT2100 MANUALS
I have a manual for a CT Systems Model 2100 Service monitor. I have been told that Wavetek acquired CT Systems, so it should be the same if that info was correct. It is around 25 pages, and I could scan to a .PDF if it would help. David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of wb5jhr Sent: Sunday, February 05, 2006 11:05 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] KINDA OFF TOPIC NEED WAVETEK CT2100 MANUALS Hello group and Kevin Little off repeaters BUT I am in need for OPERATORS SERVICE and any info for a WAVETEK CT2100 service monitor it looks like a CT2500 so maybe an operators manual fot that would help. I am also looking for the front cover for thr CT2100. Keep up the GREAT work Kevin Thanks in advance Ron WB5JHR Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Midland Repeater
-Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ted Leonard Sent: Sunday, February 05, 2006 4:19 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Midland Repeater Hello Group, A friend was given a UHF Midland Syn-Tech ll 450-470 70-5300B repeater. The Pa is 71-5400 120 watt. The question of the day is will it program to Tx at 444.500 and Rx at 449.500. Anyone done it? Ted YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] OT: no-screw mic clip?
Check your local truck-stop (I kid you not). You would be amazed at what they carry for 2-way accessories that is non-license class specific.. David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ken Arck Sent: Wednesday, February 01, 2006 10:23 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] OT: no-screw mic clip? I just bought a new car and while I wasted no time in punching a 3/4" hole for an NMO mount (my non-ham friends were amazed I'd do that within hours of getting the car home), I'm trying to avoid drilling holes in the dash to mount a mic hangup clip. Years ago, I remember someone made such a beast that was molded plastic and double-sided tape on the back. But no one seems to remember such a beast. Anyone know of one still available? Google was kinda useless Ken Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Kenwood Tk-722 parts
Well, it was worth a try. The RF Deck came out of a TKR 620 desk-top repeater. Unfortunately, the front panel and other items were lost when the owner scrapped it out for the power supply present in the Desk-Top repeater that the TK-722R came out of; as well as the boards I described. Sorry these parts from the Desk-top repeater weren't the ones you need. I don't know if the "R" in TK-722R designated repeater, or if every TK-722 mobile has the "R" designator. The one I have is RF Deck only; no front panel. The whole thing may have been a "Franken-Radio" made from genuine used parts. :) If I am able to finally retrieve the front panel from the desk-top repeater these components came from, I will drop you a line. David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Hellewell, Byron Sent: Tuesday, January 24, 2006 12:56 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Kenwood Tk-722 parts Hi David Thanks for the offer but the TK-722 is a totally different radio. It is a mobile radio and the TKB-720 radio I am looking for a controller for is a Base station radio. It is about 6 inches high 15 inches deep and 14 inches wide and weighs About 30 pounds because in includes a AC power supply for the 50 watts output. The controller board is about 6 inches by 12 inches with one corner notched out. Thanks for thinking of me. Byron Date: Mon, 23 Jan 2006 21:53:59 - From: "David Little" <[EMAIL PROTECTED]> Subject: Kenwood TK-722R Parts I know someone had mentioned a need for components from a Kenwood TK 722R (or something like that) repeater. I have parts from what I believe to be that configuration. The whole setup got scrapped out for the power supply, and I managed to salvage the RF Deck which seems to have 2 separate PA units, but only one coax connector, the COR board, and what may be a controller board. Transceiver/RF Deck: TK-722R FCCID: ALH9TKTK-722R-1 Seems complete. PA "Bricks": M57706 and M67731 COR Board: SSC, Model 823 T-A2-1702-0 Has two 6 terminal - terminal blocks, 11 pin header, Relay, Tran and Recv vertical trim pots.. Controller Board?: X52-3080-20 J25-6546-02 This board has 6 switch dipswitch bank labeled "TONE FREQ" Trim Pot "TONE DEV" 4 pin header CN2 12 pin header CN1 LSI SMT Device MN6520 Sorry for the lack of knowledge and poor descriptions. I will not be needing this, and could use a entry level controller or CWID board for a repeater project using a VHF Engineering 2m repeater that I want to donate to an adjacent county for Skywarn access by the NOAA station that polls regional repeaters for spotter info. David KD4NUE Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: Repeater morse or voice identification
I would also be interested in this. Over the weekend, I picked up a VHF Engineering repeater that had the CWID board removed to be used on the repeater that replaced it. David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Dave VanHorn Sent: Monday, January 16, 2006 11:30 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Repeater morse or voice identification --- In Repeater-Builder@yahoogroups.com, "Rui Martins" <[EMAIL PROTECTED]> wrote: > > Hi there. > > Where can i find this??? > Possible construction(morse) If all you want is basic timing functions and morse ID, I can do you a controller chip that will require only a few external parts. Otherwise, you'll need a real repeater controller, like an RC-210. Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Motorola Amps
Here is an anecdotal solution to attenuation. A major tube manufacturer's tech support once advised me to use a length of RG-174 balled up in a container between exciter and amplifier to calm things down to a closer match to input power level... I don't say this is the most scientific method, and don't know what consequences it will introduce. However it is cost-effective and can be custom made for the individual application from junk-box parts. -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Kevin Custer Sent: Monday, January 16, 2006 9:16 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Motorola Amps Much Snippage prior to here and after the following--- The VHF amp requires 400 mW of drive. The UHF requires 1.5 to 2 watts of drive. (2W is Motorola's spec.) Do not under drive the amplifiers or spurious output will result. By the same token, don't go over 3 dB of overdrive. I don't know what you will be driving the amplifiers with, but do try to come up with the right drive level. Transmitter (exciter) output level can be safely dropped by using a power pad or inline power attenuator. This allows the exciter to run at its specified output and remain stable. Power Pads come in different dB and power dissipation values. Online calculators will help determine the right one for your inputted power. Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] PA Options for Hamtronics 6m Repeater?
Robin, Thanks for that offer. I may be in touch with you on this in the near future, The repeater is set to go to it's final resting place (Permanent site) this coming Saturday. At that point I will know for sure if the better antenna/feedline will bring the balance I am looking for. David -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Robin Midgett Sent: Sunday, January 15, 2006 9:51 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] PA Options for Hamtronics 6m Repeater? How about a 100 watt PA out of a G.E. MASTRII..I have a few available. You won't need 25 watts to drive it, though, and you will need a hefty power supply. At 02:21 PM 1/15/2006, you wrote: >Anyone have any suggestions for higher power in a Hamtronics 6m >Repeater (REP200) > >I have the 25 Watt PA, and initial testing is showing the receive >sensitivity far out distances the ability to transmit. > >I am able to get into the repeater from 50 miles, but have to be >within 25 miles to hear it. > >I would like to have the potential for 100 to 150 Watts, if this >will bring it back in line. > >It is currently being tested at 90 feet with 1/4 wave homebrew >antenna. It has been tested at 50 feet with the same combo in >another location, and the results have been the same. Both >locations were temporary to get an idea of performance after >isolating a duplexer problem and correcting the resulting desense >problem. > >It is also possible that the final resting spot (197 feet elevation >with Comet antenna fed by 25 feet of 1/2" hardline) will improve the >balance between TX and RX. This will be 100 feet higher than the >current testing location, and far better feedline in terms of >quality and length. > >However, if the combination of higher antenna height and shorter, >less lossy feedline do not bring it back in line - What would be a >good choice in external PA to do the job? > >I know this is an open-ended question, and probably far short on >info to provide a definite answer. I am only looking for possible >options here. > >Thanks, > >David >KD4NUE > > > > > > > > >Yahoo! Groups Links > > > > Thanks, Robin Midgett K4IDC VHF+ Glutton EM66se Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Repeater Assistance in Michigan.
Try disconnecting receive coax from repeater and connecting it to another receiver on the input frequency Then, open the squelch on the repeater and have someone with variable power transmit from 5 miles out on the input frequency and record how much power it takes to achieve full quieting of their signal on the other receiver. This will help you determine if de-sense is caused within the repeater, or if it is duplexer induced. We used this method last week to determine the problem in the 6m machine we have been bringing up was due to duplexer. It turned out to be a loose connection to the outside tuning tube passband cavity on the ground side. >From what I have learned in my brief introduction to being a repeater jockey is that ground/shield integrity is the first key to success. Evaluate the suggestions of others. I am a noob at this, and can only recount from my limited experience. David KD4NUE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of kfd29 Sent: Thursday, January 05, 2006 6:29 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Repeater Assistance in Michigan. Looking for assistance w/ a new repeater system in GR, Michigan... Could use a hand in finding out why we can not pick-up 5watt handheld's only 5 miles out, maybe we missed something in setup? If anyone is knowledgable in troubleshooting repeaters or in the GR area, please contact me! Small business that can't quite afford the $70/hr charge for a tech right now lol. Thanks! Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Hamtronics T301 220 exciter Final and microphonics
Bryan, Connect a Cross needle SWR/Power meter to the Output of the PA. Tune PA for Maximum power Adjust C2 for Max power with minimum SWR. Check C3 for shortest lead length to safely solder in. I am not the most experienced repeater jockey on the list; by a long shot. I just spent the better part of the morning isolating the problem I had on my 6m Hamtronics REP-200 down to input matching. I finally got someone on the other end to keep it active until the PA started putting out a low power signal after the Exciter was turned off by the Controller. The signal was not anywhere near 6 meters. I don't have a working Spectrum Analyzer to determine where it went. I found the above procedure eliminated the noticeable "spur" being created by the LPA 6-25R In the REP-200. In looking over the manuals for the other Hamtronics repeater PA boards, you may even venture to replace the .001 Disc Capacitor C3 with the 1 to 20 pF (pink) one from Hamtronics used in the LPA 4-35; designated C11 and C12. I don't know if this is too far away from the Disc's value to be effective; just noting that most of the other PA kits have trimming/tuning ability on both sides L1. You may also want to verify that L1 is 1/2" and 1/8th" above the board. I don't know if this will be any help or not. David KD4NUE - Original Message - From: "Bryan Fields" <[EMAIL PROTECTED]> To: Sent: Tuesday, December 20, 2005 2:11 AM Subject: Re: [Repeater-Builder] Re: Hamtronics T301 220 exciter Final and microphonics > As to the origional question, anyone fixed the microphonics problems with > the > exciter? > > -- > Bryan Fields, KB9MCI Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Hamtronics T301 220 exciter Final and microphonics
I have a similar problem on the Hamtronics REP-200 6m repeater. It is constantly swamping the receiver. I tried a antenna tuner in the transmitter line as well as the antenna line; trying to "make the PA Happy". The TX light will go out,. and there will still be power going through the meter, at a higher SWR. It will occaisionally key the 2m repeater which is about a mile away. When the receiver actually is sensitive enough to produce static with the squelch completely open, you can hear it clearing the runway and preparing to take off as the PA decides to sweep the RF spectrum. Some times it just likes to output power after the exciter drops out. Touching the stud nut on the bottom of the chassis while it is transmitting results in RF burn; so it is no wonder it swamps the Receiver; even with a dummy load on the Duplexer at the antenna port. - Original Message - From: "Bryan Fields" <[EMAIL PROTECTED]> To: Sent: Monday, December 19, 2005 4:55 PM Subject: [Repeater-Builder] Hamtronics T301 220 exciter Final and microphonics > well I have a T301 on 220 that has some serious power drop off and > microphonics issues. I had thought the microphonics were generated in the > VCO, and while some of them are, i have traced most down to the final amp. > > It looks like just a bad amp design as the transistor has the collector > commen > to the case, putting RF on the Heatsink. the heat sink seams to form a > capacitor between it and the shield so any movement or heating modulates > the > signal. > > We also have seen the output power go from 4 watts down to 1.2 watts as it > heats up. If we put a fan in there the output is stable at about 2 watts, > but it modulates the signal with a hum from the moving air. > > So I was thinking to replace the output transistor with a MRF237 which has > the > case tied to ground(emitter) which would seam to be a better idea. > > For the time being we removed the final and are using a small brick amp > that > puts out 3 watts stable, with no microphonics. > > So anyone tried this or have a better fix for the issue? > > -- > Bryan Fields, KB9MCI > > 15:28:02 up 2 days, 14:35, 2 users, load average: 0.85, 0.61, 0.52 > > Health is merely the slowest possible rate at which one can die. Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: DR-235 for repeater
John, I may be wrong in my assessment. By One-Way, I was referring to rig to TNC. By 2-Way, I meant taking discriminator out of one rig to discriminator audio in of the other and vice-versa. Everything points to the audio being unconditioned, thin and aurally pure, but when you send it to the other radio, destined for rebroadcast, the receiving radio does the conditioning. I'm not sure if my choice of wording is technically correct. The results we have had in playing around with the data ports were not what we expected. The term "Conditioning" was the best I could come up with for the transition of discriminator output of the Transmitting rig being injected to the discriminator of the Receiving rig and the final result coming through the speaker. I once heard that the "best" preamp in the esoteric audio world would be a straight piece of wire; with gain. However, in the real world, every audio device does some "conditioning" to make the output pleasing to the ear. This practice probably goes back to the Fletcher-Munsen curves, which were the result of early pioneering in the Bell System to determine the best response curve for telephone headsets. Their results have been used on many ways to augment the human listening trait. OTOH, the discriminator has always seemed to be the best point to tap to get audio that is not "colored" in any way so as to be the best choice for analog input data transfer. I think Ken's reply summed it up in far less words. David KD4NUE - Original Message - From: "WD7F - John in Tucson" <[EMAIL PROTECTED]> To: Sent: Saturday, December 17, 2005 12:21 PM Subject: Re: [Repeater-Builder] Re: DR-235 for repeater > David, what do you mean by: > > "On a one-way setup, you definitely get discriminator output. When > coupled > to the second rig, the conditioning takes place."? > > Which output are you talking about? I guess my question is: Other than > the > specified signal levels, what IS the difference between the 1200 baud > audio > out and the 9600 baud audio out? > > de WD7F > John in Tucson > > > - Original Message - > From: <[EMAIL PROTECTED]> > To: > Sent: Saturday, December 17, 2005 9:57 AM > Subject: Re: [Repeater-Builder] Re: DR-235 for repeater > > > I also had the same concerns. > > However, I found that the treatment after the discriminator on the > respective radios applied the "conditioning" to make the interface > transparent to the ear. > > We have tested "in-band" range extenders using antenna separation to > extend > the range of simplex communications by using a pair of 2 meter rigs > connected data port to data port. I have also done similar "experiments" > going from 6M SSB to 2m Simplex and back. > > The audio quality does not have the "thin" quality you would expect; > reinforcing the concept that the radio does the conditioning "after" the > discriminator to the user interface (speaker and audio controls on the > receiver). > > It took me a long time to finally accept that this was the case before > even > trying to use the data ports for user audio. > > On a one-way setup, you definitely get discriminator output. When coupled > to the second rig, the conditioning takes place. > > David > KD4NUE > > - Original Message - > From: "Bob Witte K0NR" <[EMAIL PROTECTED]> > To: > Sent: Saturday, December 17, 2005 11:05 AM > Subject: [Repeater-Builder] Re: DR-235 for repeater > > >> With regard to interfacing radios via "packet data" ports. >> Has anyone looked at the audio flatness of these ports? >> Also, some rigs have a 1200 baud in/out and a 9600 baud >> in/out, which (apparently) have very different audio levels. >> I suspect there are other characteristics that are different, too. >> >> 73, Bob K0NR >> >> --- In Repeater-Builder@yahoogroups.com, <[EMAIL PROTECTED]> wrote: >>> >>> Andy, >>> >>> I have not personally done this, but the data out connector should >>> suply pins for audio in , audio out, Squelch voltage or logic >>> and a reference ground. These signals should provide everything >>> you should need for direct linking of 2 radios. The DB9 is easy >>> to work with. >>> >>> Since these were designed for packet use, the audio is not >>> affected by front panel controls. It is conditioned and altered >>> after it enters the TNC; or >>> in this case, the other rig. >>> >>> I have set up crossband repeaters using data connectors from other >>> brands, and it works well with little external manipulation. >>> >>> Attached is the page from the manual describing pin function for >>> the DB9 connector. Email me if it doesn't go through. >>> >>> David >>> KD4NUE >>> >>> >>> >>> >> >> >> >> >> >> >> >> >> Yahoo! Groups Links >> >> >> >> >> >> > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this g
Re: [Repeater-Builder] Re: DR-235 for repeater
I also had the same concerns. However, I found that the treatment after the discriminator on the respective radios applied the "conditioning" to make the interface transparent to the ear. We have tested "in-band" range extenders using antenna separation to extend the range of simplex communications by using a pair of 2 meter rigs connected data port to data port. I have also done similar "experiments" going from 6M SSB to 2m Simplex and back. The audio quality does not have the "thin" quality you would expect; reinforcing the concept that the radio does the conditioning "after" the discriminator to the user interface (speaker and audio controls on the receiver). It took me a long time to finally accept that this was the case before even trying to use the data ports for user audio. On a one-way setup, you definitely get discriminator output. When coupled to the second rig, the conditioning takes place. David KD4NUE - Original Message - From: "Bob Witte K0NR" <[EMAIL PROTECTED]> To: Sent: Saturday, December 17, 2005 11:05 AM Subject: [Repeater-Builder] Re: DR-235 for repeater > With regard to interfacing radios via "packet data" ports. > Has anyone looked at the audio flatness of these ports? > Also, some rigs have a 1200 baud in/out and a 9600 baud > in/out, which (apparently) have very different audio levels. > I suspect there are other characteristics that are different, too. > > 73, Bob K0NR > > --- In Repeater-Builder@yahoogroups.com, <[EMAIL PROTECTED]> wrote: >> >> Andy, >> >> I have not personally done this, but the data out connector should >> suply pins for audio in , audio out, Squelch voltage or logic >> and a reference ground. These signals should provide everything >> you should need for direct linking of 2 radios. The DB9 is easy >> to work with. >> >> Since these were designed for packet use, the audio is not >> affected by front panel controls. It is conditioned and altered >> after it enters the TNC; or >> in this case, the other rig. >> >> I have set up crossband repeaters using data connectors from other >> brands, and it works well with little external manipulation. >> >> Attached is the page from the manual describing pin function for >> the DB9 connector. Email me if it doesn't go through. >> >> David >> KD4NUE >> >> >> >> > > > > > > > > > Yahoo! Groups Links > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Hamtronics Preamp part ID
>From their website, under spare parts: 21937, 2SC2369 $4.50 Not Sure, but looks like it would be what you are looking for. David KD4NUE - Original Message - From: "Jim, K8COP" <[EMAIL PROTECTED]> To: Sent: Sunday, December 11, 2005 3:48 PM Subject: [Repeater-Builder] Hamtronics Preamp part ID > This transistor is in a Hamtronics Pre-Selector preamp from the 80's. The > number on the top of the transistor is 2369E44. Anyone know what the > correct part number is, or what it is? I have tried a Goggle search and > have > not came up with anything. > > Thanks, > > Jim, K8COP Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] DR-235 for repeater
Andy, I have not personally done this, but the data out connector should suply pins for audio in , audio out, Squelch voltage or logic and a reference ground. These signals should provide everything you should need for direct linking of 2 radios. The DB9 is easy to work with. Since these were designed for packet use, the audio is not affected by front panel controls. It is conditioned and altered after it enters the TNC; or in this case, the other rig. I have set up crossband repeaters using data connectors from other brands, and it works well with little external manipulation. Attached is the page from the manual describing pin function for the DB9 connector. Email me if it doesn't go through. David KD4NUE - Original Message - From: "Andrew" <[EMAIL PROTECTED]> To: Sent: Sunday, December 11, 2005 1:16 AM Subject: [Repeater-Builder] DR-235 for repeater > Looking around the archieves for posts about this but no luck. Does > anybody have any experience with making a pair of Alinco DR-235's into > a repeater? I am curious as to where you chose to pull the RX audio to > the controller and the COR out of the radio. I would be looking for a > audio output that is not affected by turning the volume control on the > front of the radio and a COR line direct from the board not from the > audio feed. TIA > > Andy KC2GOW > 445.125 (PL141.3) > Staten Island,NY Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Pages from dr135_435ins.pdf Description: Adobe PDF document
Re: [Repeater-Builder] Need Advise: 6m Repeater Antenna
Thanks for all the discussion. I do appreciate the suggestions of the different cost-efficient antenna possibilities being fed by 1/2" coaxial cable variants. They are the real-world info I was looking for. I think I will just go with a basic Kreckman, Diamond or Comet (in that order) and some RG-214. It is looking like the Site will require less than 20 feet of Coax from Duplexer to Antenna, and it will not be a tower, but inside the Elevator Access Building at the top of the local Hospital. The antenna will be mounted to a fixture firmly attached to the top and wall, and it will share the grounding system already in installed for other antennas in place. I hope to do a visual inspection of the site in the coming week, and hope that there is no inter-reaction of elevator cables (if that is the transport type used) and the antenna's RF field. So far, the antennas in place are for a digital node that outputs 65 Watts on 2m and has not created problems. Unity Gain and a light wind resistance Omni should do what we need it to do. The Hospital is close to a Hercules Powder plant that makes a number of products and produces a hostile environment for anything metal in the area. The location is also line of site to the Inter-Coastal Waterway and the Atlantic Ocean. End result is antennas will be budgeted for replacement on a basis determined by usable lifespan of original. If some of the suggestions I received were based on the experience of others, there must be a great access to Crane Operators and Equipment to host large payloads to great heights, being fed by Coax that is nearly the diameter of the average tower leg. (tongue in cheek) I have around 100 feet of new 1 5/8 Andrews hardline left over from a Cellsite installation, but don't care to float the loan for connectors and then have to pay for extra guy wire on the opposite of the tower to bring it back into plum. :) Thanks Again for the suggestions, David KD4NUE - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, December 09, 2005 7:17 AM Subject: [Repeater-Builder] Need Advise: 6m Repeater Antenna Hi All, I will soon be putting up a 6m repeater. It is a Hamtronics REP-200 with stock 20 Watt PA, using Wacom BrBp duplexer ordered for the repeater frequency. Both Units were new in 1999, and have been stored since around 2001. I have been slowly chasing all the gremlins out of the setup. I have added a Storm Watch WX receiver on the aux receiver port, as well as a Midland Vehicular repeater unit (minus PA) in the cabinet to provide a wireless link for 2M Simplex input into the repeater. The antenna will be approximately 300 feet. I would like to get some suggestions for an antenna; based on the experiences of others. Also, choice of Coax. TIA, David KD4NUE YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Need Advise: 6m Repeater Antenna
Title: Message In rereading the original post, the height is incorrect. It should be 130 feet. - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, December 09, 2005 9:21 AM Subject: Re: [Repeater-Builder] Need Advise: 6m Repeater Antenna It is looking like it will be side mounted - Original Message - From: Jeff DePolo WN3A To: Repeater-Builder@yahoogroups.com Sent: Friday, December 09, 2005 7:47 AM Subject: RE: [Repeater-Builder] Need Advise: 6m Repeater Antenna Will the antenna be top-mounted or side-mounted? -Original Message-From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]Sent: Friday, December 09, 2005 7:17 AMTo: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] Need Advise: 6m Repeater Antenna Hi All, I will soon be putting up a 6m repeater. It is a Hamtronics REP-200 with stock 20 Watt PA, using Wacom BrBp duplexer ordered for the repeater frequency. Both Units were new in 1999, and have been stored since around 2001. I have been slowly chasing all the gremlins out of the setup. I have added a Storm Watch WX receiver on the aux receiver port, as well as a Midland Vehicular repeater unit (minus PA) in the cabinet to provide a wireless link for 2M Simplex input into the repeater. The antenna will be approximately 300 feet. I would like to get some suggestions for an antenna; based on the experiences of others. Also, choice of Coax. TIA, David KD4NUE YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Need Advise: 6m Repeater Antenna
Title: Message It is looking like it will be side mounted - Original Message - From: Jeff DePolo WN3A To: Repeater-Builder@yahoogroups.com Sent: Friday, December 09, 2005 7:47 AM Subject: RE: [Repeater-Builder] Need Advise: 6m Repeater Antenna Will the antenna be top-mounted or side-mounted? -Original Message-From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]Sent: Friday, December 09, 2005 7:17 AMTo: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] Need Advise: 6m Repeater Antenna Hi All, I will soon be putting up a 6m repeater. It is a Hamtronics REP-200 with stock 20 Watt PA, using Wacom BrBp duplexer ordered for the repeater frequency. Both Units were new in 1999, and have been stored since around 2001. I have been slowly chasing all the gremlins out of the setup. I have added a Storm Watch WX receiver on the aux receiver port, as well as a Midland Vehicular repeater unit (minus PA) in the cabinet to provide a wireless link for 2M Simplex input into the repeater. The antenna will be approximately 300 feet. I would like to get some suggestions for an antenna; based on the experiences of others. Also, choice of Coax. TIA, David KD4NUE YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Need Advise: 6m Repeater Antenna
Hi All, I will soon be putting up a 6m repeater. It is a Hamtronics REP-200 with stock 20 Watt PA, using Wacom BrBp duplexer ordered for the repeater frequency. Both Units were new in 1999, and have been stored since around 2001. I have been slowly chasing all the gremlins out of the setup. I have added a Storm Watch WX receiver on the aux receiver port, as well as a Midland Vehicular repeater unit (minus PA) in the cabinet to provide a wireless link for 2M Simplex input into the repeater. The antenna will be approximately 300 feet. I would like to get some suggestions for an antenna; based on the experiences of others. Also, choice of Coax. TIA, David KD4NUE YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Midland Vehicular repeater info
And they loose sensitivity rapidly above 48 MHz; even the CWB (Wideband) models. The 70-052C Syntech I was even spec'ed out to 54 MHz in the FCC database, and it makes a great 6m rig. .3uV sensitivity easily attainable. The 70-0520CWB Syntech II can be modified to get sensitivity of 3 uV. Without modification of the front end it will get around 3mV. David KD4NUE - Original Message - From: "Jim B." <[EMAIL PROTECTED]> To: Sent: Monday, December 05, 2005 3:03 PM Subject: Re: [Repeater-Builder] Midland Vehicular repeater info > [EMAIL PROTECTED] wrote: > >> FYI >> The Midland 70-050 70-052 70-055 70-056 Radios work great on 6 >> meters.. >> Just make sure you get the "C" split >> 80 channels of pure fun >> 73 Scott ka9sln >> Fort Wayne In > > Different radios-he's talking about the 70-0500 series (note the extra > 0). These are Syn-Tech II, instead of the original Syn-Tech's. Various > config's, up to 360 Ch's. > > -- > Jim Barbour > WD8CHL > > > > > > > Yahoo! Groups Links > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Midland Vehicular repeater info
What you will be looking for will most likely be a 70-0520CWB with the 70-2959-2 Vehicular Repeater Option. All the ones I have seen listed on eBya have had the 70-2959-1 option. I don't see any reason that UHF would not be a possible option as well. The 70-0520CWB is the WidBand version (WB) of the C split (36 to 48 MHz) Trunk Mount unit with 110 Watt PA. It is a 320 channel radio with provisions of up to 16 groups with any number of channels per group up to the 320 channel limit. It is a Syntech II radio The 70-2959-2 option includes the 70-2959 / 70-2955 repeater controoler boards and a 70-295B handheld radio which is considered an XTR Handheld, 8 channel, and a 1 watt output in the repeater option configuration. The 70-0520CWB will program with the 70-1308 Computer cable and Syntech II software. It rapidly looses receive sensitivity after 48 MHz, but it is possible to inprove the sensitivity by shorting the top 2 turns of the front end variable inductors. It is possible to achieve 3uV doing this as opposed to .3mV in stock configuration measured at 52.525MHz. Others may have achieved better results. The above figures are what I obtained in the past 2 weeks in my learning experience on the one I have been experimenting with. The 70-295B will require 70-1022 XTRHH software and the same cable that you use on the Syntech II. There are control heads with a repeater button, but you can use the standard 70-0007 small control head to activate the repeater by redefining the key functions by some hex editing. It is also possible to reroute 5v to the switch sense circuit and effectively have the crossband repeat function on all the time. The trunk mount cables are the same as used in all Syntech II trunk mount rigs. I have a service manual on both the 70-0520CWB, as well as the 70-2959-X repeater option. Even with both Service manuals, and the Syntec II Control Head Service Manual, there is still info that isn't provided as far as control head configuration. The on-line help in the Syntech II and XTRHH software does give some further helpful info, and there is still a degree of experimenting. If I could find the actual programming manual, I could possibly supply the missing links. As it is, I am still trying different configurations. These are observations from my recent experience with the Vehicular Repeaters. I am sure someone that has hands-on expience with them in the field can make corrections and additions to the above. Hope some of this makes sense, David KD4NUE - Original Message - From: "msdanehart" <[EMAIL PROTECTED]> To: Sent: Wednesday, November 30, 2005 3:28 PM Subject: [Repeater-Builder] Midland Vehicular repeater info > Does anybody have any information about the Midland vehicular > lowband/uhf crossband repeat trunk systems that were employed a few > years back? > > I believe the model numbers were soemthing like 70-0500CWB **? Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Midland Vehicular repeater info
Tim, If your email account will let you accept pic attachments, I can send pics that show the procedure I used. I used a Pace vacuum de-soldering station to remove the eprom. I then put in a low profile socket and removed the headers used to connect the module to the main board. I put in perf board spacers to raise the headers to partially offset the height of the eprom socket. I then cut a piect of pasteboard the size ot the z-273 module and placed a piece of double-sided tape on the rop of it. After exposing the top side of the double sided tape, I put the top cover on it. This uses the pasteboard to keep the z-273 securely in circuit and helps offset the remaining height of the eprom socket that the perf board couldn't offset. The pics are worth a million words. I can also send the software that was used in the Midland programmer. The data file that it creates can be renamed with a .bin extension and used with any eprom programmer capable of writing a 2716 eprom. I use an old intronics pocket programmer and a uv eraser that i got from Jameco years ago. I always ask first before sending attachments. I will help in any way that I can. David KD4NUE - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, November 30, 2005 10:43 PM Subject: Re: [Repeater-Builder] Midland Vehicular repeater info Hello, Tim here W3PLC I am looking for way to program the Syntech 1 units I have on for a fire company to do also one to put on 6-meters for myself. All I need is the eprom info. I have all the state of art test equipment here in my shop so the tuning is the easy part. I just don't have or access to a 70-1000 programmer. Thanks 73's Tim w3plc YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Midland Vehicular repeater info
Great rigs. They are Syntech 1 units, and I have had receive sensitivity of .3uV nearly full quieting on injected signal on 52.525 MHz. They are simple to align using a signal generator and a DC Voltmeter. With the Syntech II equivalent, 0520CWB sensitivity of only 3uV after taking the advice of another list member and shorting the top 2 turns in the front end variable inductors. If anyone needs any help in prepping the Z-273 module in the Syntech I rigs for programming with standard eprom programmer, I can send some pics and a basic procedure to make it programmable on a standard eprom programmer. This makes the Syntech I rigs very affordable, as many folks don't mess with them due to the $1000.00 price tag for the Midland Programming unit. David KD4NUE - Original Message - From: <[EMAIL PROTECTED]> To: Sent: Wednesday, November 30, 2005 7:55 PM Subject: Re: [Repeater-Builder] Midland Vehicular repeater info > FYI > The Midland 70-050 70-052 70-055 70-056 Radios work great on 6 > meters.. > Just make sure you get the "C" split > 80 channels of pure fun > 73 Scott ka9sln > Fort Wayne In > > > > > > > Yahoo! Groups Links > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Midland Vehicular repeater info
The option is 70-2959-x (where x is either a 1 for VHF (High Band) or 2 for UHF). This option was available in the 70-0500 series, which could include a number of model numbers that indicate the mounting system, control head feature level, output power, etc. All 0500 series are Lowband. I have both 70-0520 CWB with 70-2959-1 (100 Watt lowband [36-48 MHZ WideBand] Syntech II trunk unit with 1 watt XTR Handheld VHF Highband low-power unit) and 70-0520B with 70-2959-2 (100 Watt Lowband [36-42 MHz] Syntech II trunk unit with 1 watt XTR Handheld UHF low power. The low-power unit is made from a XTR 70-195 XTR Handheld coupled to a XTR Programming PCB. Controller boards piggyback above the Microprocessor board on Syntech II sets. A jumper strip is removed that separates audio passing and allows it to be processed through the controller boards. I suspect there are a number of other possibilities using VHF low power units in UHF Syntech II as well as UHF low power units in VHF Syntech II rigs. If anyone is interested in either the 70-0520CWB with 70-2959-1 or the 70-520B with 70-2959-2, reply to me off list, and I will hook you up with a source for very reasonable pricing on these from State Auction buyers interested in moving them out. I don't make anything on this; I will just put you in contact with the folks I have found that have them for sale. David KD4NUE - Original Message - From: "Paul Yonge" <[EMAIL PROTECTED]> To: Sent: Wednesday, November 30, 2005 6:45 PM Subject: Re: [Repeater-Builder] Midland Vehicular repeater info > > On Nov 30, 2005, at 3:28 PM, msdanehart wrote: > >> Does anybody have any information about the Midland vehicular >> lowband/uhf crossband repeat trunk systems that were employed a few >> years back? >> >> I believe the model numbers were soemthing like 70-0500CWB **? > > > I inquired about a UHF repeater (71-4050RB) last week at > www.midlandradio.com and was promised a response in two business days > (but nothing yet). Their product information doesn't show any cross- > band equipment, though. > > Paul Yonge > Syracuse NY > > > > > > Yahoo! Groups Links > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: RE: [Repeater-Builder] mobile repeaters
First off, don't get in any hurry about delivery time. rfguys' "expedited shipping" of $12.60 for the 8 ounce package will probably get it to you before the 1st week of December. After you get over the delivery time, their module and program are completely usable. You will need to be sure to configure your printer port as EPP. Make sure the Printer port uses IRQ 7 and is at address 378. You may want to experiment with IRQ5 and address of 278. Until you get the configuration correct, it will appear to write to the module, but nothing goes across; even though their program shows it writing byte by byte. To check your configuration, first read the first 'Bank" of 80 channels that the module comes programmed with, then compare it with the data file that comes on the software that accompanies the module. Until you get a good verify, you don't have the printer port set right. I have one set up with 2 meter on bank 1, 2 meter "XL" models on bank 2, 6 meter on bank 3 and 70 cm on bank 4. I use a 4 position rotary switch to select the banks. This allows me to quickly check or align any Syntech I on 2m, 6m or 70cm. The Syntech II vehicular repeaters program directly from the PC via a programming cable. rfguys also sells it on eBay. Good luck with the module. Don't let the configuration get the best of you. It will work. You may have to try a number of PCs until you find the era that allows EPP configuation of the printer port at standard addressing for the 286/386/486 era. David KD4NUE > > From: "Mike Perryman K5JMP" <[EMAIL PROTECTED]> > Date: 2005/11/16 Wed PM 11:40:25 EST > To: > Subject: RE: [Repeater-Builder] mobile repeaters > > And if you want to make the programming even easier, check this option... > once it arrives, I will share my findings with the group... > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5828840920 > > mike > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] mobile repeaters
Midland LMR Syntech II series radios offer this in a cross band configuration. It is the 70-2959-X (X=1 for VHF and 2 for UHF) option. In their Low Band, you could have either VHF or UHF "repeater" unit, which is actually an 8 channel 1 - 2 watt handheld radio and a controller. In VHF Models, the "repeater" unit would be UHF. These are added into the main chassis and are considered a trunk mount or remote mount package with control head. The Deluxe control head can actually be attached to the front of the radio to make an all-in-one configuration. Look for Midland Vehicular Repeater on eBay. The 70-3400B is a 40 watt VHF Highband unit, which will tune down to 2 meters and is computer porgrammable. The 70-520CWB is a 110 Watt lowband unit which will tune to 6 meters. Both rigs use 2 separate antennas; no duplexer required. The programming will allow matching a repeater channel to the input channel. When you go in on a specific frequency, it will go out on the frequency matched to that "channel". Power can be set to high or low; values determined by maximum output. They have very flexible programming options. Make sure there is a local shop to do the programming for you. It can get a bit complex to gather the different soltware and info to match up control head to unit to do it your self. Most of these units come without control head or cables, so it isn't a turn-key solution - just a possibility that may match your needs. David Little KD4NUE > > From: "ctool1968" <[EMAIL PROTECTED]> > Date: 2005/11/16 Wed AM 10:41:39 EST > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] mobile repeaters > > I am curious,what would it take to build a moble repeater,I am wanting > something that I can possibley change channels depending on what freq > I want to use,it will be more for my use only cause I am in a rural > area and want to be able to have my handheld go to the truck and then > out with something like 100 watts or even 50 watts,I think that state > patrol use something simalar to this but I dont know how to make one > for the freqs I want or the cheapest way to do so,THANK YOU > > > > > > > > > Yahoo! Groups Links > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] No duplexer- 2 antenna ?
According to an ancient DOS Site management tool, the duplexer or cavity will require 75.6dB of Isolation for this combo not to cause receiver degenereation. This assumes Receiver 12dB Sinad point in uV = .2 48 feet Vertical Separation, or 1530 Feet Horizontal Separation will provide the required Separation. For 462 TX and 467 RX @ 50 W = 48'V or 1530'H Same for 467TX and 462 RX @ 50W at 40W = 45'V or 1369'H at 30W = 42'V or 1185'H at 20W = 38'V or 968'H at 10W = 32'V or 684'H at 5W = 26'V or 484'H at 1W = 17'V or 216'H Other factors that may affect the accuracy of these figures are antenna, tower, terrain, buildings, feed-lines, etc.. This is from an old copy of CommShop - Original Message - From: "robertakelseyjr" <[EMAIL PROTECTED]> To: Sent: Saturday, November 12, 2005 6:36 PM Subject: [Repeater-Builder] No duplexer- 2 antenna ? >I have a new yeasu 9000 that seems i can program (its synthisized) multiple >channels > and fx's for repeater mode and at the push of a button change pairs.. If I > understand > the software correctly. > > So If I want to use it to its full potential how much physical separation > of the > antenna''s do I need on the same tower so I dont kill the sensitivity. > > I'm programing using the gmrs pairs 462/467 so the max tx is 50 watt. > > Or am I just way over thinking this. Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
