Re: [Repeater-Builder] Motorola MSF5000
Thanks to everyone for their help. I opened everything up today... The VCOs were locked- so I unlocked them. I did find the problem. The accessory disable/reset switch seems to be malfunctioning. There are no longer 3 positions on the switch. It stays in acc disable- I can hold the switch in the middle and the repeater works great! Any ideas? Bill ** Create a Home Theater Like the Pros. Watch the video on AOL Home. (http://home.aol.com/diy/home-improvement-eric-stromer?video=15amp; ncid=aolhom000301)
Re: [Repeater-Builder] Static on grounded feed line system.
Something else to consider is what we experienced on our two and 440 repeaters. Our 440 has a stationmaster type of antenna into the duplexer into a preamp then into the Micor repeater. Most of the electrical storms we had caused me to go to the site to replace the preamp transistor. After many trips, I installed a single bandpass type low insertion loss cavity between the duplexer and the preamp. That was 3 years ago... Then I found out that most all duplexers don't really offer broadband selectivity, they do their main job of notching out the appropriate frequencies to allow the repeater to do it's job, but then several MHz away, the signals start slowly coming back in. Remember lightning is quite broadband and strong. Our two meter repeater had a bandpass in it's path also. It is my suggestion that in addition to the all the appropriate grounding of the feedline that you may consider a real band pass type of cavity (may be easier than to use a shorted stub and more broadband) which has two independent loops in the cavity. Sharpness is NOT needed here, so go for the lowest insertion loss and let the loops do their static/lightning rejection... Good luck Curt W1FSM wa5luy wrote: Our repeaters are located on a 200 foot self supporting tower at the top of a 1200 foot mountain. Anytime there is a storm with in 50 miles we get a lot of pulsing static on the 2 meter repeater which is a Micor. This is not noticeable on the 440 repeater. We hear this when the receiver is open from a signal and when the repeater identifies with the receiver squelched.
Re: Re: [Repeater-Builder] Static on grounded feed line system.
Curt, I've also found some low noise pre-amps that have little tuning and are wide band can be zapped by static and lightning. The transistors used are for low level signals of course and can have problems dealing with sources like lightning. Lightning energy has the RF properties of pretty flat DC to 1 MHz and then roll off at a 20 db/decade rate. So as you go higher in freq the less energy. Also as with any wide band signal the energy is spread over wide range. I can see you inserting a band pass cavity or filter will remove much of this energy reducing the affect on a pre-amp. 73, ron, n9ee/r From: Curt Seaton [EMAIL PROTECTED] Date: 2008/04/01 Tue PM 09:51:21 CDT To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Static on grounded feed line system. Something else to consider is what we experienced on our two and 440 repeaters. Our 440 has a stationmaster type of antenna into the duplexer into a preamp then into the Micor repeater. Most of the electrical storms we had caused me to go to the site to replace the preamp transistor. After many trips, I installed a single bandpass type low insertion loss cavity between the duplexer and the preamp. That was 3 years ago... Then I found out that most all duplexers don't really offer broadband selectivity, they do their main job of notching out the appropriate frequencies to allow the repeater to do it's job, but then several MHz away, the signals start slowly coming back in. Remember lightning is quite broadband and strong. Our two meter repeater had a bandpass in it's path also. It is my suggestion that in addition to the all the appropriate grounding of the feedline that you may consider a real band pass type of cavity (may be easier than to use a shorted stub and more broadband) which has two independent loops in the cavity. Sharpness is NOT needed here, so go for the lowest insertion loss and let the loops do their static/lightning rejection... Good luck Curt W1FSM wa5luy wrote: Our repeaters are located on a 200 foot self supporting tower at the top of a 1200 foot mountain. Anytime there is a storm with in 50 miles we get a lot of pulsing static on the 2 meter repeater which is a Micor. This is not noticeable on the 440 repeater. We hear this when the receiver is open from a signal and when the repeater identifies with the receiver squelched. Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
Re: [Repeater-Builder] Motorola N1254A Power Amp for 2M repeater info
George, Is this PA in a unified chassis. Mot built base stations with such a PA that was mounted beside the exciter With heat sink sticking out. It used the same PA as in the mobiles. 73, ron, n9ee/r From: George Sintchak [EMAIL PROTECTED] Date: 2008/04/01 Tue PM 09:48:06 CDT To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola N1254A Power Amp for 2M repeater info Hi All, I've searched the archives website for info on this Amp and can't find anything. It's sort of similar to the N1275A or the N1248A convert-a-com amps but for a Motorcycle (I was told). It looks like the back end of a MoCom 70 heat sink. I need more specific schematic or manual info so I can integrate it into the repeater keying control logic. The Amp is working fine on 147 MHz, keys up on RF input and makes rated output. I want to use it in repeater service at reduced (~40 Watts) output, possibly with a small fan for cooling, as needed. Anyone have any history/info using this Amp? Model N1254A, 150.8 to 162.0 MHz, Mfg Aug 1977. Max input 7 Watts, Output 60 Watts. FCC # CC 3303. Power Amp board TLD8922A uses M9622/23/24 two M9625's for final transistors. Output directional coupler/power monitor board, TLD8922A. Input attenuator (-3 dB) RF sense keying board, NLD7141A. Input/Output bypass relays are 23C84103B01. Any info, links, etc. much appreciated. Tnx, 73's George Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
Re: [Repeater-Builder] Motorola MSF5000
From the Better late than never department, next time you have to move the station, don't put it face down in the truck! Those switches come in two versions: long handle and short handle, and they're very vulnerable to being pushed in and broken, as you've found out. The best solution is to replace the switch. It may not be available from Motorola any more, and that would make things very difficult. The switch itself is simply on/off/momentary, but the mounting style used by Motorola makes it hard to find. Call Motorola Parts ID and let them get you a current part number, then you can buy it from them and replace it. Probably will cost around $10 plus sh and the time to change it. Other than that, you could try using some duct tape to hold the switch in a position where everything will still work, but this isn't an optimal solution. Bob M. == --- [EMAIL PROTECTED] wrote: Thanks to everyone for their help. I opened everything up today... The VCOs were locked- so I unlocked them. I did find the problem. The accessory disable/reset switch seems to be malfunctioning. There are no longer 3 positions on the switch. It stays in acc disable- I can hold the switch in the middle and the repeater works great! Any ideas? Bill You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. http://tc.deals.yahoo.com/tc/blockbuster/text5.com
[Repeater-Builder] Re: Motorola MSF5000
The switch you need, SW801, is Motorola part number 4083980R12, shown as: SW TGL BD MTG ON OFF MOM E107: List price $17.06. Motorola is your friend (as long as you come with money!) Glad it was something simple. Tom --- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote: Thanks to everyone for their help. I opened everything up today... The VCOs were locked- so I unlocked them. I did find the problem. The accessory disable/reset switch seems to be malfunctioning. There are no longer 3 positions on the switch. It stays in acc disable- I can hold the switch in the middle and the repeater works great! Any ideas? Bill ** Create a Home Theater Like the Pros. Watch the video on AOL Home. (http://home.aol.com/diy/home-improvement-eric-stromer?video=15amp; ncid=aolhom000301)
[Repeater-Builder] Motorola N1254A (Mocom 70 style) external rf amplifier Manual Help?
Hello everyone, Trying to help someone with locating a Manual for the Motorola N1254A (Mocom 70 style) external rf amplifier. Anyone got a scan or copy of the manual available in any form they would consider sharing..? please... Please reply direct. thanks skipp skipp025 at yahoo.com ps: The owner wants to adapt the amplifier for Amateur Repeater Operation.
Re: [Repeater-Builder] Motorola N1254A (Mocom 70 style) external rf amplifier Manual Help?
Didn't George just ask for this earlier? Or you also trying to help him? Bob M. == --- skipp025 [EMAIL PROTECTED] wrote: Hello everyone, Trying to help someone with locating a Manual for the Motorola N1254A (Mocom 70 style) external rf amplifier. Anyone got a scan or copy of the manual available in any form they would consider sharing..? please... Please reply direct. thanks skipp skipp025 at yahoo.com ps: The owner wants to adapt the amplifier for Amateur Repeater Operation. You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. http://tc.deals.yahoo.com/tc/blockbuster/text5.com
[Repeater-Builder] Re: Motorola N1254A Power Amp for 2M repeater info
Eric, Tnx for the suggestion - I called Motorola and after navigating - my life history, etc. with the call screener - Parts ID said they no longer support or have any info on anything this old. I also tried to get the 68P manual number so I could search more, but they didn't want to look for anything more. Dead end for them. How long ago did you get the N1275A manual from them? George WA2VNV --- In Repeater-Builder@yahoogroups.com, Eric Lemmon [EMAIL PROTECTED] wrote: George, Call Motorola at 800-422-4210, and navigate to Parts ID. Ask for the manual number that covers the amp. That's how I finally located the manual for my N1275A amplifier. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of George Sintchak Sent: Tuesday, April 01, 2008 7:48 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola N1254A Power Amp for 2M repeater info SNIP
[Repeater-Builder] Re: Motorola N1254A Power Amp for 2M repeater info
Ron, Tnx for your input. I have an older Mocom70 mobile manual that's no help. What I'm specifically looking for is the schematic on the Input attenuator RF sense keying PC board, NLD7141A, so I can enable/disable the amplifier from the repeater controller. This input RF sense keying board would not normally be used in a base station or a mobile, so it's a little different. I'd also like to see the schematic of the power controller section to see if I could utilize the temperature sensor to activate an external heat sink fan. I don't like to run a fan continously as they tend to fail after a few months. Default case is to key a 12 Volt heat sink fan only on transmit - thus I would like to get a schematic of the RF sense keying board without having to reverse engineer it - not easy to remove. George WA2VNV --- In Repeater-Builder@yahoogroups.com, Ron Wright [EMAIL PROTECTED] wrote: George, Is this PA in a unified chassis. Mot built base stations with such a PA that was mounted beside the exciter With heat sink sticking out. It used the same PA as in the mobiles. 73, ron, n9ee/r From: George Sintchak [EMAIL PROTECTED] Date: 2008/04/01 Tue PM 09:48:06 CDT To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola N1254A Power Amp for 2M repeater info Hi All, I've searched the archives website for info on this Amp and can't find anything. It's sort of similar to the N1275A or the N1248A convert-a-com amps but for a Motorcycle (I was told). It looks like the back end of a MoCom 70 heat sink. I need more specific schematic or manual info so I can integrate it into the repeater keying control logic. The Amp is working fine on 147 MHz, keys up on RF input and makes rated output. I want to use it in repeater service at reduced (~40 Watts) output, possibly with a small fan for cooling, as needed. Anyone have any history/info using this Amp? Model N1254A, 150.8 to 162.0 MHz, Mfg Aug 1977. Max input 7 Watts, Output 60 Watts. FCC # CC 3303. Power Amp board TLD8922A uses M9622/23/24 two M9625's for final transistors. Output directional coupler/power monitor board, TLD8922A. Input attenuator (-3 dB) RF sense keying board, NLD7141A. Input/Output bypass relays are 23C84103B01. Any info, links, etc. much appreciated. Tnx, 73's George
Re: [Repeater-Builder] Re: Zetron 48 B Manual?
If I did, it got misplaced in the move. I relocated from a 3 bedroom house with a 2 car garage that was 90% storage and a 10x20 shop behind the garage into one bedroom of a double-wide mobile home. EVERYTHING but the desktop computer, the laserjet, a couple of handheld chargers and a Pro-2006 scanner is in storage. And it doesn't help that the flatbed scanner got broken in the move (the top cover got pushed through the glass). Mike At 07:59 PM 04/01/08, you wrote: The 48 (plain), 48B and 48MAX manuals seem to be unavailable from anyone. Mike WA6ILQ Mike, before people move too far along a path that could duplicate efforts, did you ever receive the Model 48 manual that I sent to you last December? Laryn K8TVZ Yahoo! Groups Links
[Repeater-Builder] Re: Maximum split on Sinclair Q2330E duplexer
Yes, no problem. You may have to rotate/adjust the loops to get the spacing wider depending on how they were set up and you will get less insertion loss too if they were originally set up for close spacing. Depending on where and how they are used at the site, you may want to set up 4 cans with those frequencies (as a Q2220E) and use the 3rd can on each side to give it a good pass response (by making the 2 notches of the Q can symmetric around the pass frequency) or tune the notch to another frequency that may be causing problems or prevent potential problems. Harold, VA3HF --- In Repeater-Builder@yahoogroups.com, ve7ltd [EMAIL PROTECTED] wrote: Here is an interesting question. I have been asked if I can tune a Q2330E duplexer (high split VHF) on a 12meg split between TX and RX. I have only ever tuned them for 600Khz split, and it seems like a real waste to use these nice duplexers for such a large split. Will the caps tune the notch that far from the pass? TX freq 169 RX freq 157 Dave Cameron VE7LTD
Re: [Repeater-Builder] Mastr II station 2 repeater conversion.... HELP no PL(CG) decode.
On Apr 1, 2008, at 9:14 PM, NORM KNAPP wrote: Problem solved! CG decode restored! Reconnecting H41-H42 jumper restored the CG decode. I am now going to attemp to inteface to a RC-1000. Wish me luck. My thanks to the hams who helped. You know who you are. 73 all! Once you have it interfaced Norm, you'll feel like the Maytag Repairman... MASTR II's are just incredibly solid performers as long as you're not having any PA problems. -- Nate Duehr, WY0X [EMAIL PROTECTED]
[Repeater-Builder] 2008 VoIP Technical Forum in Las Vegas Saturday April 12, 2008
Sent bcc Since 2002 Nevada Amateur Radio Repeaters, Inc. (NARRI) has sponsored a public VoIP conference every Spring . Up until this year the meeting focused mostly on IRLP, and featured the system designer of IRLP, now the meeting is of a broader scope including all the major VoIP systems in use by the amateur radio community, i.e., IRLP, Echo link, EchoIRLP, All Star and D-Star. This year's meeting plans have been finalized with Circus-Circus being chosen as the meeting location. Here is a summary of details: Place: Las Vegas Circus-Circus Date: Saturday April 12, 2008 Time: 9am to 3pm Program: the various VoIP systems with demonstrations. Venue: Topical Conference plus Continental Breakfast and buffet style Deli Lunch Cost: $55 per person, no exceptions. Hotel Rooms: Find your own sleeping rooms. Registration: Please send your check to NARRI, c/o Kent Johnson, 395 Peaceful Street, Las Vegas, NV 89110 ASAP or $60 if PayPay at www.narri.org http://www.narri.org/ . Please direct your questions to Kent W7AOR, [EMAIL PROTECTED] or phone 702-452-4412.
[Repeater-Builder] Battery back up
Well I know I will sound like an Idiot asking this 3 part Question, But I have been called worse I have a 60 amp Astron with the Battery Back option that requires a 50 amp fuse on the Battery side. I know I can get a Buss type circuit breaker type that trips , But could I find something similar that would auto reset . Most times they will trip due to a surge Etc . Can I just by a AC type Circuit Box and put in a 50 amp AC circuit Breaker and mount that box on the inside of the 4 Ft Rack , Question 3 what is the simplest way for some type of Notification When the Repeater has tripped over to Battery Power. Go easy on the answers and especially the comments And I don't want to hear any Locals in My area talking about Me on the air I will be listening Ha Ha Thanks Don KA9QJG
Re: [Repeater-Builder] Battery back up
Your auto parts store will have all kinds of self-restoring 12-volt circuit breakers. Chuck WB2EDV - Original Message - From: ka9qjg To: Repeater-Builder@yahoogroups.com Sent: Wednesday, April 02, 2008 6:28 PM Subject: [Repeater-Builder] Battery back up Well I know I will sound like an Idiot asking this 3 part Question, But I have been called worse I have a 60 amp Astron with the Battery Back option that requires a 50 amp fuse on the Battery side. I know I can get a Buss type circuit breaker type that trips , But could I find something similar that would auto reset . Most times they will trip due to a surge Etc . Can I just by a AC type Circuit Box and put in a 50 amp AC circuit Breaker and mount that box on the inside of the 4 Ft Rack , Question 3 what is the simplest way for some type of Notification When the Repeater has tripped over to Battery Power. Go easy on the answers and especially the comments And I don't want to hear any Locals in My area talking about Me on the air I will be listening Ha Ha Thanks Don KA9QJG
Re: [Repeater-Builder] Battery back up
The easiest loss-of-power alarm is a wall wart connected to an alarm input on your controller. Chuck WB2EDV - Original Message - From: ka9qjg To: Repeater-Builder@yahoogroups.com Sent: Wednesday, April 02, 2008 6:28 PM Subject: [Repeater-Builder] Battery back up Well I know I will sound like an Idiot asking this 3 part Question, But I have been called worse I have a 60 amp Astron with the Battery Back option that requires a 50 amp fuse on the Battery side. I know I can get a Buss type circuit breaker type that trips , But could I find something similar that would auto reset . Most times they will trip due to a surge Etc . Can I just by a AC type Circuit Box and put in a 50 amp AC circuit Breaker and mount that box on the inside of the 4 Ft Rack , Question 3 what is the simplest way for some type of Notification When the Repeater has tripped over to Battery Power. Go easy on the answers and especially the comments And I don't want to hear any Locals in My area talking about Me on the air I will be listening Ha Ha Thanks Don KA9QJG
RE: [Repeater-Builder] Battery back up
Try your local RV dealer. They have large size buss fuses that go between the battery and the trailer power converter box. Mike KA2NDW -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of ka9qjg Sent: Wednesday, April 02, 2008 6:28 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Battery back up Recent Activity a.. 14New Members b.. 2New Files Visit Your Group John McEnroe on Yahoo! Groups Join him for the 10 Day Challenge. Featured Y! Groups and category pages. There is something for everyone. Moderator Central Yahoo! Groups Get the latest news from the team. .
RE: [Repeater-Builder] Battery back up
As to reference to this answer nowadays the 2 systems in a R.V. are 30 and 50 amps however the 2 companies that make them (world friendship and Paralax) use 2, 40 amp fuses to protect the converter and the battery So I doubt they are going to be any help with fuses such as those. I work for a r.v company and they are the 2 we deal with and all the old big stuff has been sold out for the new stuff. Joe Landers Ke4eue -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of MikeDeWaele Sent: Wednesday, April 02, 2008 8:08 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Battery back up Try your local RV dealer. They have large size buss fuses that go between the battery and the trailer power converter box. Mike KA2NDW -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of ka9qjg Sent: Wednesday, April 02, 2008 6:28 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Battery back up . http://geo.yahoo.com/serv?s=97359714/grpId=104168/grpspId=1705063108/ms gId=80618/stime=1207176537/nc1=5202321/nc2=4763760/nc3=5028925
RE: [Repeater-Builder] Battery back up
Marine supply places. Since selling the boat, I buy stuff for my RV at West Marine. Great stuff and the price is usually right. MikeDeWaele [EMAIL PROTECTED] wrote: Try your local RV dealer. They have large size buss fuses that go between the battery and the trailer power converter box. Mike KA2NDW -Original Message- From:Repeater-Builder@yahoogroups.com[mailto:[EMAIL PROTECTED] Behalf Ofka9qjg Sent: Wednesday, April 02, 2008 6:28 PM To:Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Batteryback up . - You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost.
[Repeater-Builder] Zetron 48 and 48BB Manuals
--- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ [EMAIL PROTECTED] wrote: If I did, it got misplaced in the move. OK, well, I can make a copy again. Actually I have one each of the Model 48 and Model 48B manuals. I am not able to scan them here, so I'll make paper copies. If both of them are useful, I'll copy both. Where is the best place to send them so they'll be scanned and posted on the Repeater-Builder site? Laryn K8TVZ
Re: [Repeater-Builder] Battery back up
At 03:28 PM 04/02/08, you wrote: Well I know I will sound like an Idiot asking this 3 part Question, But I have been called worse I have a 60 amp Astron with the Battery Back option that requires a 50 amp fuse on the Battery side. Watch out for those BB series Astrons. The charger is just a resistor across one of the diodes. It's not the worlds best charger... I know I can get a Buss type circuit breaker type that trips , But could I find something similar that would auto reset . Most times they will trip due to a surge Etc . Can I just by a AC type Circuit Box and put in a 50 amp AC circuit Breaker and mount that box on the inside of the 4 Ft Rack , You can't use AC breakers on DC. There's good technical reasons I won't go into, but trust me - they just don't work right. DC breakers are available from multiple sources. One source is the marine suppliers like West Marine. Another is the RV dealers. Or if you have an airplane mechanic (an AP) in your circle of friends he may have a few ideas. Most of the smaller planes (Cessna, Piper, etc) use 12v systems. Question 3 what is the simplest way for some type of Notification When the Repeater has tripped over to Battery Power. Get a 5 or 6 volt wall transformer. Cut the connector off and use a VOM to identify + and - leads. Wire the + side to an alarm input and the - side to ground. As long as AC is present the alarm input will be high. When AC goes away you will get an alarm a few seconds later (as soon as the filter caps in the wall transformer discharge). If you want put an LED and a series resistor in place (about 100-200 ohms per volt) to tell you when the AC is there. Then look in the book (or ask here) for the programming... On power fail: 1) say A C POWER FAIL AT (time) 2) change the courtesy beep to the morse letter F (or something else you like). This is designed to get the users attention. On power restoration: 1) say A C POWER ON AT (time) 2) put the courtesy beep back to normal. Go easy on the answers and especially the comments And I don't want to hear any Locals in My area talking about Me on the air I will be listening Ha Ha Thanks Don KA9QJG Let us know how it works out. Mike WA6ILQ
RE: [Repeater-Builder] Battery back up
Thanks to everyone for all the Helpful info; I have enough now to make a intelligent Decision on how to approach the project Thanks Don KA9QJG
[Repeater-Builder] Re: Motorola MSF5000
The switches are NLA from Motorola, but Digi Key has the right one except it has a shorter bat handle. It works fine and fits the mounting holes on PC board exactly. The hardest part is getting the front panel off the tray without breaking any of plastic tabs that hold it on. If I was at work I could give you the part number, they are made by CK electronics and I lost 2 of them in the last 6 weeks. Must be age related? Jack K6YC 11a. Re: Motorola MSF5000 Posted by: [EMAIL PROTECTED] [EMAIL PROTECTED] wjpcolorado Wed Apr 2, 2008 1:09 am (PDT) Thanks to everyone for their help. I opened everything up today... The VCOs were locked- so I unlocked them. I did find the problem. The accessory disable/reset switch seems to be malfunctioning. There are no longer 3 positions on the switch. It stays in acc disable- I can hold the switch in the middle and the repeater works great! Any ideas? Bill
