[Repeater-Builder] Portable Temporary Repeater
I apologize if this has been addressed previously, or even close! Do not have a substantial amount of time to complete this research! Situation: An event in a remote area, one hill top is well enough that coverage at around 10 watts VHF for the repeater could cover most of our Aid Stations, 2 with HT's, the other 3 with Portables at 25 watts or so, could get into the repeater! In the past, we have used crossband UHF in, VHF out, and it worked ok! Except for issues with a couple of HT's not being able to cut the input out during transmit! My goal, is to design a lite weight, low power consumption (i.e. fewest batteries possible, as the hill top is only assessable by hiking or horseback! What I have on hand: Single band 2m HT for receive Single band Yaesu 2M FT2800R for transmit @ 12.5 watts! Pair of homebrewed 2 m aluminum j-poles Need to acquire: simple controller - NHRC-2 looks workable! batteries - based on estimated power consumption of final configuration! Basically the question is: at a 2 mhz seperation (odd split) on VHF can one get away without using duplexers (cans), utilizing separate rx/tx antenna's, spaced about 20 ft apart! Without desense or other issues! Being such a remote area, and the nearest 2 meter repeater is well over 50 miles away, and nowhere near these frequencies - 145.500 rx/147.500 out using a tone of 179.9, I do not see any interference issues there! Observations, suggestions, and your crazy are appreciated! Thank You, K1STX
[Repeater-Builder] Slightly OT: Hams Engineers
OK. Who here can watch this and not be taken back to his childhood? http://www.youtube.com:80/watch?v=KaHm1ecBCgw 73, Paul, AE4KR
Re: [Repeater-Builder] Portable Temporary Repeater
At 07:45 PM 09/29/08, you wrote: I apologize if this has been addressed previously, or even close! Do not have a substantial amount of time to complete this research! Situation: An event in a remote area, one hill top is well enough that coverage at around 10 watts VHF for the repeater could cover most of our Aid Stations, 2 with HT's, the other 3 with Portables at 25 watts or so, could get into the repeater! In the past, we have used crossband UHF in, VHF out, and it worked ok! Can you continue to use crossband, or do you have to go inband this time? Except for issues with a couple of HT's not being able to cut the input out during transmit! ??? I thought you wanted to talk on the input? My goal, is to design a lite weight, low power consumption (i.e. fewest batteries possible, as the hill top is only assessable by hiking or horseback! Fewer batteries means lower power out, or lower battery life. You've not said how long this operations is going to last? . At some point the weight of an additional battery is more than a 600 watt generator and a few gallons of gas (about 8 pounds per gallon). The genny can be run for an hour now and then to recharge the batteries. If you are going to pack the repeater into a site on horseback for a multi-day event it might make sense to lead a second horse that is carrying a small genny and a jerry can of gas. See http://cgi.ebay.com/600-800-WATTS-GENERATOR-GONI-GN-1996_W0QQitemZ25016951QQcmdZViewItem?_trksid=p3286.m20.l1116 What I have on hand: Single band 2m HT for receive Single band Yaesu 2M FT2800R for transmit @ 12.5 watts! Pair of homebrewed 2 m aluminum j-poles Need to acquire: simple controller - NHRC-2 looks workable! If there is going to be a ham on site at the repeater then you can get by with a carrier delay timer and a timeout timer and no remote control shutdown ability. batteries - based on estimated power consumption of final configuration! Double what you think you need, or take additional gasoline. The receiver and controller can have as much or even greater impact on the battery power requirements as the transmitter. Look at the DC current requirements of a modern synthesized radio compared to a crystal controlled radio and you will see why 90% of the solar powered repeaters are crystal based. I have a crystal based 2m receiver that draws less than 20 milliamps at 12v. The old Motorola HT200 was about half that. One thing you can do to maximize the battery life is to think of ways to minimize the key down time. Tell the users to pause, think, plan the entire transmission in their mind, then push the PTT button. No pressing, then thinking, then saying Ahhh, errr, ummm, etc. as that wastes repeater batteries. And remember you can't drain the batteries down to zero - some battery chemistries are such that if you go below 25% charge you damage the battery. Basically the question is: at a 2 mhz seperation (odd split) on VHF can one get away without using duplexers (cans), utilizing separate rx/tx antenna's, spaced about 20 ft apart! Without desense or other issues! See http://www.repeater-builder.com/antenna/thoughts-on-isolation.html and http://www.repeater-builder.com/antenna/separation.html Read both articles twice. 20 horizontal feet of separation and no vertical separation will not be NOT enough for an in-band repeater. The distance needed depends on how much isolation you can get. Keeping the transmit antenna radiated energy out of the receiver antenna pattern helps a LOT, zero leakage coax and and a quarter wave stub can work wonders. See http://www.repeater-builder.com/ge/datafile-bulletin/df-10002-01.pdf (but use better cable than RG-8). At 2m you will find that 40 or 50 feet of vertical separation is worth a lot more than 500 feet of horizontal. Do what you can to maximize the vertical antenna separation. Twenty years ago I saw a portable military 60 foot guyed mast with the receive antenna AND a Motrac receiver at the top, and a multiconductor cable carrying power, audio and COR strapped to one of the guys. The receiver was up there to keep it out of the transmitter antenna radiation pattern. The transmit antenna was 10 horizontal feet away at the top of a 10 foot pole. The transmitter had a single pass cavity on the TX frequency. Being such a remote area, and the nearest 2 meter repeater is well over 50 miles away, and nowhere near these frequencies - 145.500 rx/147.500 out using a tone of 179.9, I do not see any interference issues there! Why run tone if yours is the only activity? It's one more layer of complexity you don't need. Let the repeater play in carrier squelch - that way if you have desense or any other problem you will hear it. A tone decoder does not improve receiver sensitivity or selectivity, it just hides the interference - the interference that you need to eliminate to make the repeater work. If your local transmitter is the only one around then you will find that your local RF
RE: [Repeater-Builder] Portable Temporary Repeater
Louis, Would it not be possible to use UHF or 900 ? Small radios and duplexers. Higher gain for given antenna size. Use something like a GE MVP and a small duplexer. On the power think about solar. Just a thought. Good luck Robert / KD4PBC -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Louis Sent: Monday, September 29, 2008 10:45 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Portable Temporary Repeater I apologize if this has been addressed previously, or even close! Do not have a substantial amount of time to complete this research! Situation: An event in a remote area, one hill top is well enough that coverage at around 10 watts VHF for the repeater could cover most of our Aid Stations, 2 with HT's, the other 3 with Portables at 25 watts or so, could get into the repeater! In the past, we have used crossband UHF in, VHF out, and it worked ok! Except for issues with a couple of HT's not being able to cut the input out during transmit! My goal, is to design a lite weight, low power consumption (i.e. fewest batteries possible, as the hill top is only assessable by hiking or horseback! What I have on hand: Single band 2m HT for receive Single band Yaesu 2M FT2800R for transmit @ 12.5 watts! Pair of homebrewed 2 m aluminum j-poles Need to acquire: simple controller - NHRC-2 looks workable! batteries - based on estimated power consumption of final configuration! Basically the question is: at a 2 mhz seperation (odd split) on VHF can one get away without using duplexers (cans), utilizing separate rx/tx antenna's, spaced about 20 ft apart! Without desense or other issues! Being such a remote area, and the nearest 2 meter repeater is well over 50 miles away, and nowhere near these frequencies - 145.500 rx/147.500 out using a tone of 179.9, I do not see any interference issues there! Observations, suggestions, and your crazy are appreciated! Thank You, K1STX Yahoo! Groups Links
[Repeater-Builder] goodies for sale
Hey guys, I've got an older 220 repeater in my shack just taking up space. scom 5 K controller, hamtronics modules, and an RF concepts amp. All is working well, i pulled it out of service, and it is just taking up space. Any takers? All offers will be considered. Thanks, Jed
Re: [Repeater-Builder] Portable Temporary Repeater
Louis wrote: I apologize if this has been addressed previously, or even close! Do not have a substantial amount of time to complete this research! Situation: An event in a remote area, one hill top is well enough that coverage at around 10 watts VHF for the repeater could cover most of our Aid Stations, 2 with HT's, the other 3 with Portables at 25 watts or so, could get into the repeater! In the past, we have used crossband UHF in, VHF out, and it worked ok! Except for issues with a couple of HT's not being able to cut the input out during transmit! My goal, is to design a lite weight, low power consumption (i.e. fewest batteries possible, as the hill top is only assessable by hiking or horseback! What I have on hand: Single band 2m HT for receive Single band Yaesu 2M FT2800R for transmit @ 12.5 watts! Pair of homebrewed 2 m aluminum j-poles Don't bother with those radios. Very poor receive isolation on the hand held (it's a made-for-ham handhled, it WILL be bad!), dirty transmitter (again, made-for-ham, it WILL be bad!) Basically the question is: at a 2 mhz seperation (odd split) on VHF can one get away without using duplexers (cans), utilizing separate rx/tx antenna's, spaced about 20 ft apart! Without desense or other issues! BIG problems! 1) I would be very surprised if the local repeater council allowed anything other than a 600 KHZ split on 2M. I know Ohio, MI, IN, and IL would all come down on someone using other than normal repeater pairs. Yeah, ok, some would have to complain about interference first... 2)20' of separation will NOT work!!! You will need more like 60-80' vertical, or several hundred feet horizontal, to prevent desense. Since you are trying to cover a fairly wide area, you will need as much receive as you can get-EFFECTIVE receive! 3)Duplexers on VHF are very big, heavy, and very touchy! They don't like to be bounced around in a vehicle. Being such a remote area, and the nearest 2 meter repeater is well over 50 miles away, and nowhere near these frequencies - 145.500 rx/147.500 out using a tone of 179.9, I do not see any interference issues there! 145.50 is the edge of the repeater sub-band in the FCC rules. If you operate there you will have emissions that fall outside the band. 144.50-145.50, and 146.0-148.0 is the sub band, and your emissions have to fall inside that. Observations, suggestions, and your crazy are appreciated! Thank You, K1STX The whole idea of running a portable repeater on the 2M ham is going to be problematic. I STRONGLY suggest using UHF!!!
Re: [Repeater-Builder] Portable Temporary Repeater
wd8chl wrote: BIG problems! 1) I would be very surprised if the local repeater council allowed anything other than a 600 KHZ split on 2M. I know Ohio, MI, IN, and IL would all come down on someone using other than normal repeater pairs. Yeah, ok, some would have to complain about interference first... EDIT: someONE would have to complain...
Re: [Repeater-Builder] Portable Temporary Repeater
I realize that the goal here is a 2m repeater, but I've found the low- power UHF Motorola R1225 (1-10W) is about the slickest small, low- power repeater around. Built-in controller, the size of a GM300. Strap a mobile sized reject duplexer to it and you're good to go. I don't know if they ever made a 1-10W VHF version, I've never seen one. Of course, separation and cans are both HUGE for VHF, hence why UHF is so much easier. On Sep 30, 2008, at 9:16 AM, wd8chl wrote: wd8chl wrote: BIG problems! 1) I would be very surprised if the local repeater council allowed anything other than a 600 KHZ split on 2M. I know Ohio, MI, IN, and IL would all come down on someone using other than normal repeater pairs. Yeah, ok, some would have to complain about interference first... EDIT: someONE would have to complain... -- Cort Buffington H: +1-785-838-3034 M: +1-785-865-7206 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * 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] Portable Temporary Repeater
At 9/30/2008 07:08, you wrote: Louis wrote: I apologize if this has been addressed previously, or even close! Do not have a substantial amount of time to complete this research! Situation: An event in a remote area, one hill top is well enough that coverage at around 10 watts VHF for the repeater could cover most of our Aid Stations, 2 with HT's, the other 3 with Portables at 25 watts or so, could get into the repeater! In the past, we have used crossband UHF in, VHF out, and it worked ok! Except for issues with a couple of HT's not being able to cut the input out during transmit! My goal, is to design a lite weight, low power consumption (i.e. fewest batteries possible, as the hill top is only assessable by hiking or horseback! What I have on hand: Single band 2m HT for receive Single band Yaesu 2M FT2800R for transmit @ 12.5 watts! Pair of homebrewed 2 m aluminum j-poles Don't bother with those radios. Very poor receive isolation on the hand held (it's a made-for-ham handhled, it WILL be bad!), dirty transmitter (again, made-for-ham, it WILL be bad!) I actually tried using a pair of HTs in place of a G.E. MVP the difference was night day. The MVP will be a bit bulkier heavier, but there is no comparison in performance. Use a real radio! Bob NO6B
Re: [Repeater-Builder] Portable Temporary Repeater
At 02:24 9/30/2008, Mike Morris WA6ILQ wrote: Why not run more repeater offset ? The further away you are the more isolation you have - and it's free. Here in SoCal we have a special portable 2m repeater pair coordinated - it's 144.93 out, and 147.585 in. That's over 2.5 mhz of offset, and you can get just over 3 mhz if you use 147.99 as your input. This brings up a very interesting point. IN A GENUINE EMERGENCY, why not run a huge split, say 145.000 input, 175.000 output. I realize the output is out of band, but MARS mods are widely available, and in an emergency, out-of-band operation is permitted, right? One would want to preselect a frequency where interference with other emergency use is least likely, I also realize that not all HTs have a wide-band receive capability, but lots do. -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html -
Re: [Repeater-Builder] Portable Temporary Repeater
and in an emergency, out-of-band operation is permitted, right? NO On Tue, Sep 30, 2008 at 10:59 AM, Dave Gomberg wrote: At 02:24 9/30/2008, Mike Morris WA6ILQ wrote: Why not run more repeater offset ? The further away you are the more isolation you have - and it's free. Here in SoCal we have a special portable 2m repeater pair coordinated - it's 144.93 out, and 147.585 in. That's over 2.5 mhz of offset, and you can get just over 3 mhz if you use 147.99 as your input. This brings up a very interesting point. IN A GENUINE EMERGENCY, why not run a huge split, say 145.000 input, 175.000 output. I realize the output is out of band, but MARS mods are widely available, and in an emergency, out-of-band operation is permitted, right? One would want to preselect a frequency where interference with other emergency use is least likely, I also realize that not all HTs have a wide-band receive capability, but lots do. -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf. com/ham/info. html http://www.wcf.com/ham/info.html - - - - - - http://www.wcf.com/ham/info.html
Re: [Repeater-Builder] Portable Temporary Repeater
Sure it is. If you have a *genuine* emergency, you can go around the rules. Do you honestly think that the FCC is going to come down on you if you are directly dealing with a crisis, and didn't obey some rule, in order to better facilitate helping the situation? --STeve Andre' wb8wsf en82 On Tuesday 30 September 2008 12:46:05 [EMAIL PROTECTED] wrote: and in an emergency, out-of-band operation is permitted, right? NO On Tue, Sep 30, 2008 at 10:59 AM, Dave Gomberg wrote: At 02:24 9/30/2008, Mike Morris WA6ILQ wrote: Why not run more repeater offset ? The further away you are the more isolation you have - and it's free. Here in SoCal we have a special portable 2m repeater pair coordinated - it's 144.93 out, and 147.585 in. That's over 2.5 mhz of offset, and you can get just over 3 mhz if you use 147.99 as your input. This brings up a very interesting point. IN A GENUINE EMERGENCY, why not run a huge split, say 145.000 input, 175.000 output. I realize the output is out of band, but MARS mods are widely available, and in an emergency, out-of-band operation is permitted, right? One would want to preselect a frequency where interference with other emergency use is least likely, I also realize that not all HTs have a wide-band receive capability, but lots do.
Re: [Repeater-Builder] Portable Temporary Repeater
Not to start a reg debate but I believe the fcc only allows any and all means of communication when there is an imminent threat to life or property AND there is no other means of communications available. For the event mentioned this would not be the case Sent by Good Messaging (www.good.com) -Original Message- From: STeve Andre' [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 30, 2008 12:54 PM Eastern Standard Time To: Repeater-Builder@yahoogroups.com Subject:Re: [Repeater-Builder] Portable Temporary Repeater Sure it is. If you have a *genuine* emergency, you can go around the rules. Do you honestly think that the FCC is going to come down on you if you are directly dealing with a crisis, and didn't obey some rule, in order to better facilitate helping the situation? --STeve Andre' wb8wsf en82 On Tuesday 30 September 2008 12:46:05 [EMAIL PROTECTED] wrote: and in an emergency, out-of-band operation is permitted, right? NO On Tue, Sep 30, 2008 at 10:59 AM, Dave Gomberg wrote: At 02:24 9/30/2008, Mike Morris WA6ILQ wrote: Why not run more repeater offset ? The further away you are the more isolation you have - and it's free. Here in SoCal we have a special portable 2m repeater pair coordinated - it's 144.93 out, and 147.585 in. That's over 2.5 mhz of offset, and you can get just over 3 mhz if you use 147.99 as your input. This brings up a very interesting point. IN A GENUINE EMERGENCY, why not run a huge split, say 145.000 input, 175.000 output. I realize the output is out of band, but MARS mods are widely available, and in an emergency, out-of-band operation is permitted, right? One would want to preselect a frequency where interference with other emergency use is least likely, I also realize that not all HTs have a wide-band receive capability, but lots do. Since 1974, the award-winning Alpert JFCS has helped families of all faiths throughout most of Palm Beach County, FL, via counseling, seniors services, residences for the disabled, mentoring children, support groups and a lot more. SOLUTIONS FOR LIVING www.JFCSonline.com Please take note of our new website and E-Mail Addresses. Please update your contacts ASAP. NOTICE: This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer.
Re: [Repeater-Builder] Portable Temporary Repeater
At 10:16 9/30/2008, Robert Pease wrote: Not to start a reg debate but I believe the fcc only allows any and all means of communication when there is an imminent threat to life or property Such as a forest fire, earthquake recovery, flood coming or just been here, etc. AND there is no other means of communications available. Hey, if the cell phones work we are not needed, right? And how many forest fire scenes have cell phone coverage If you don't have the great duplexer needed for 600KHz separation, that mode is NOT AVAILABLE. For the event mentioned this would not be the case Huh??? What event? -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html -
Re: [Repeater-Builder] TKB 720
Sad news, but thanks for the info...h On Mon, Sep 29, 2008 at 2:07 PM, Hal [EMAIL PROTECTED] wrote: Whats the procedure for converting the TKB to a TKRIs it as simple as the jumpering behind the front panel? Hal Yahoo! Groups Links
Re: [Repeater-Builder] Radio Over Internet Protocol (ROIP) Interface
On Mon, 29 Sep 2008 20:18:08 Repeater-Builder@yahoogroups.com wrote: 6. Radio Over Internet Protocol (ROIP) Interface Posted by: paul czarwin [EMAIL PROTECTED] tisoy_608 Sun Sep 28, 2008 7:13 am (PDT) I'm looking for diagram of Radio Over Internet Protocol (ROIP) Interface to use by our group in linking our local overseas members through this method. Back to top Reply to sender | Reply to group | Reply via web post Messages in this topic (1) Have a look at http://www.omnitronics.com.au/RadiooverIP.html I've used these and they work well. Regards, -- === Rodney Baker VK5ZTV [EMAIL PROTECTED] === ... Our second completely true news item was sent to me by Mr. H. Boyce Connell Jr. of Atlanta, Ga., where he is involved in a law firm. One thing I like about the South is, folks there care about tradition. If somebody gets handed a name like H. Boyce, he hangs on to it, puts it on his legal stationery, even passes it to his son, rather than do what a lesser person would do, such as get it changed or kill himself. -- Dave Barry, This Column is Nothing but the Truth! signature.asc Description: This is a digitally signed message part.
Re: [Repeater-Builder] Portable Temporary Repeater
here goes the regs debate -- my interpretation is you can go anywhere you need to to make the initial report and get first responders moving -- once first responders are on the scene -- keep it in band unless specifically requested by the served agency and on frequencies normally used by that agency !! I've got a portable UHF repeater for emergency use.. never even considered setting it up out of band because there are too many situations where the repeater would be useful that do not in any sense meet the emergency use regs. (special events spring to mind) Dave Gomberg wrote: At 10:16 9/30/2008, Robert Pease wrote: Not to start a reg debate but I believe the fcc only allows any and all means of communication when there is an imminent threat to life or property Such as a forest fire, earthquake recovery, flood coming or just been here, etc. AND there is no other means of communications available. Hey, if the cell phones work we are not needed, right? And how many forest fire scenes have cell phone coverage If you don't have the great duplexer needed for 600KHz separation, that mode is NOT AVAILABLE. For the event mentioned this would not be the case Huh??? What event? -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html http://www.wcf.com/ham/info.html -
Re: [Repeater-Builder] Portable Temporary Repeater
This is the problem with clipping posts. Read the original post Situation: An event in a remote area, one hill top is well enough that coverage at around 10 watts VHF for the repeater could cover most of our Aid Stations, 2 with HT's, the other 3 with Portables at 25 watts or so, could get into the repeater! In the past, we have used crossband UHF in, VHF out, and it worked ok! Except for issues with a couple of HT's not being able to cut the input out during transmit! My goal, is to design a lite weight, low power consumption (i.e. fewest batteries possible, as the hill top is only assessable by hiking or horseback! Sent by Good Messaging (www.good.com) -Original Message- From: Dave Gomberg [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 30, 2008 01:44 PM Eastern Standard Time To: Repeater-Builder@yahoogroups.com Subject:Re: [Repeater-Builder] Portable Temporary Repeater At 10:16 9/30/2008, Robert Pease wrote: Not to start a reg debate but I believe the fcc only allows any and all means of communication when there is an imminent threat to life or property Such as a forest fire, earthquake recovery, flood coming or just been here, etc. AND there is no other means of communications available. Hey, if the cell phones work we are not needed, right? And how many forest fire scenes have cell phone coverage If you don't have the great duplexer needed for 600KHz separation, that mode is NOT AVAILABLE. For the event mentioned this would not be the case Huh??? What event? -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html - Since 1974, the award-winning Alpert JFCS has helped families of all faiths throughout most of Palm Beach County, FL, via counseling, seniors services, residences for the disabled, mentoring children, support groups and a lot more. SOLUTIONS FOR LIVING www.JFCSonline.com Please take note of our new website and E-Mail Addresses. Please update your contacts ASAP. NOTICE: This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer.
Re: [Repeater-Builder]Thread closed - Portable Temporary Repeater
Re: [Repeater-Builder] Portable Temporary RepeaterSince the list rules explicitly BAN rules discussions, this thread is now closed. Please move on. Scott N3XCC - List Co-Owner Scott Zimmerman Amateur Radio Call N3XCC 474 Barnett Rd Boswell, PA 15531
Re: [Repeater-Builder] Portable Temporary Repeater
At 11:39 9/30/2008, John Barrett wrote: there are too many situations where the repeater would be useful that do not in any sense meet the emergency use regs. (special events spring to mind) This is definitely so. We would need special (limited) drill and practice operation permission from the FCC.My question was: What (if anything) is TECHNICALLY wrong with the idea of using an out-of-band repeater output freq? -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html -
Re: [Repeater-Builder] Portable Temporary Repeater
At 11:39 9/30/2008, John Barrett wrote: there are too many situations where the repeater would be useful that do not in any sense meet the emergency use regs. (special events spring to mind) This is definitely so. We would need special (limited) drill and practice operation permission from the FCC.My question was: What (if anything) is TECHNICALLY wrong with the idea of using an out-of-band repeater output freq? -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html -
Re: [Repeater-Builder] Portable Temporary Repeater
technically you can do anything -- look at Amsat -- 2m input, 10m output, 70cm input, 2m output.. in general -- the larger the split, the easier it is to prevent receiver desense. -- 600kc split on 2m is a royal pain to deal with :) Dave Gomberg wrote: At 11:39 9/30/2008, John Barrett wrote: there are too many situations where the repeater would be useful that do not in any sense meet the emergency use regs. (special events spring to mind) This is definitely so. We would need special (limited) drill and practice operation permission from the FCC. My question was: What (if anything) is TECHNICALLY wrong with the idea of using an out-of-band repeater output freq? -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html http://www.wcf.com/ham/info.html --
Re: [Repeater-Builder] Radio Over Internet Protocol (ROIP) Interface
Rodney Baker wrote: Have a look at http://www.omnitronics.com.au/RadiooverIP.html I've used these and they work well. What price range are they in, generally? Nate WY0X
Re: [Repeater-Builder] Portable Temporary Repeater
At 9/30/2008 10:41, you wrote: At 10:16 9/30/2008, Robert Pease wrote: Not to start a reg debate but I believe the fcc only allows any and all means of communication when there is an imminent threat to life or property Such as a forest fire, earthquake recovery, flood coming or just been here, etc. AND there is no other means of communications available. Hey, if the cell phones work we are not needed, right? And how many forest fire scenes have cell phone coverage If you don't have the great duplexer needed for 600KHz separation, that mode is NOT AVAILABLE. You can use ~2.5 MHz separation a 6-section mobile VHF duplexer. Did that several times @ Dayton other local public service events. Bob NO6B
Re: [Repeater-Builder] Radio Over Internet Protocol (ROIP) Interface
A friend of mine recently decided to use MultiTech VOIP units from their unified communications line The MVP210 has EM ports on it: http://www.multitech.com/PRODUCTS/Families/MultiVOIP/ CDW has it at $758.00 http://www.cdw.com/shop/products/default.aspx?edc=402151cm_mmc=sendtec-_-adwords-_-Networking-_-multitech_mvp210SendTecID=9843618 I've been considering trawling around on Ebay for older Cisco VIC cards with EM interfaces and using 2600 series routers which are now dumpster fodder in many places. I just notices a Cisco VIC-2E/M buy-it- now on ebay for $24.99 and $10 shipping. I've not looked into which IOS load is needed or what the programming looks like, but I recall Doug and Duane Hall using this setup a number of years ago. Now I'm considering that I can glue a radio to an EM port, understanding there'll be some glue in between. On Sep 30, 2008, at 6:46 PM, Nate Duehr wrote: Rodney Baker wrote: Have a look at http://www.omnitronics.com.au/RadiooverIP.html I've used these and they work well. What price range are they in, generally? Nate WY0X -- Cort Buffington H: +1-785-838-3034 M: +1-785-865-7206
[Repeater-Builder] Antenna recommendations 220
I would like to solicit antenna recommendations for a 220 Mhz repeater. We are currently using the Hustler G7-220 and are shopping for a replacement. I did get a quote for a Comprod 4 dipole unit. Very pricey though. I know that everyone has their favorites and I don't want to start a ford vs chevy debate but I am interested in what the group thinks. We would like to put something up and forget about it for some time without hurting our wallets too badly. Suggestions along with sources would be appreciated as well as some units that need to be avoided. Thanks Tim Campbell KB2MFS N4CKV repeater
RE: [Repeater-Builder] Antenna recommendations 220
I have not tried anything but the G-7 , I have 2 Up and Never had any Problems , I will also be watching the answers You get . Good Luck
[Repeater-Builder] Re:Antenna recommendations 220
Tim, What type of location are you using? Is this antenna going on the side or top of a tower. You can get a DB224 EE for 220. That would be my first choice. Antenex ( now LAIRD ) has a 3 DB omni fiberglass antenna as does COMTELCO . www.antenex.com FG2203 220 - 225 MHz 222.5 MHz 107” http://www.comtelcoantennas.com/PDF%20Datasheets/BSLL220XL3.pdf Have a look at these antennas I have used the Antenex and Comtelco antenna lines for my own use as well as other groups repeaters. Paul R. Dumdie Jr. 73 W9DWP/R IRLP-NODE-4455 443.025/2A 145.270/1B/1Z/NAC-293 ARC-Radio-8 KCARES HERD546 EX WB9QWZ WQGG738 AAR5CU/T www.riflesandradios.com
Re: [Repeater-Builder] Antenna recommendations 220
At 9/30/2008 19:51, you wrote: I would like to solicit antenna recommendations for a 220 Mhz repeater. We are currently using the Hustler G7-220 and are shopping for a replacement. I did get a quote for a Comprod 4 dipole unit. Very pricey though. What's wrong with the G7-220? They generally do quite well. I using the Comet CX-333 at a couple of sites have had no problems with it. One site has a 2 meter 440 repeater 220 link all triplexed on the same antenna. Wish it had a little more gain, but probably only so much you can do when trying to get a good gain/pattern on 3 widely spaced bands. Bob NO6B
[Repeater-Builder] Re: Radio Over Internet Protocol (ROIP) Interface
The IPR100 is just about $1k (CAN/US). I just got a couple to demo, and that's the pricing I was quoted. Lee --- In Repeater-Builder@yahoogroups.com, Nate Duehr [EMAIL PROTECTED] wrote: Rodney Baker wrote: Have a look at http://www.omnitronics.com.au/RadiooverIP.html I've used these and they work well. What price range are they in, generally? Nate WY0X
[Repeater-Builder] Coax Help
Howdy; I was given today 2 pieces of mini-hardline marked Andrews Type 204909. It is the size of mini-8. I think this is 50 ohm, but what would be the velocity factor of it? I want to use it to make lines for 146.7/146.1 and 443.3/448.3 between radio and cavitys. Putting on the ends, does it take anything special, I would like to use solder on type id I could. Appreciate any help I may get... 73 Mike - N7ZEF
RE: [Repeater-Builder] Antenna recommendations 220
Anyone using the old CUSHCRAFT exposed dipole array ( set of 4 dipoles ) on a 220 repeater? CC stopped making them about 10 years ago but they should play great. - Mike From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, October 01, 2008 12:33 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Antenna recommendations 220 At 9/30/2008 19:51, you wrote: I would like to solicit antenna recommendations for a 220 Mhz repeater. We are currently using the Hustler G7-220 and are shopping for a replacement. I did get a quote for a Comprod 4 dipole unit. Very pricey though. What's wrong with the G7-220? They generally do quite well. I using the Comet CX-333 at a couple of sites have had no problems with it. One site has a 2 meter 440 repeater 220 link all triplexed on the same antenna. Wish it had a little more gain, but probably only so much you can do when trying to get a good gain/pattern on 3 widely spaced bands. Bob NO6B __ NOD32 3484 (20080930) Information __ This message was checked by NOD32 antivirus system. http://www.eset.com
