[Repeater-Builder] Stationmaster Disassembly
Folks, We took down the 220 MHz Phelps Dodge Model 200 Stationmaster off our tower to see if it can be rescued. There is no gel-coat left on it at all. I got the three screws around the perimiter of the mounting tube (aluminum) out, I found a stainless set screw in the copper tip. I also found three 7/16 hex head bolts around the perimiter of the RF connector. It appears that there is some sort of rubber bladder inside the mounting tube as well. Any clues, tips, ideas or suggestions so we can see what the internals look like before we go to the trouble of re-gelling it? Thanks Steve - Ahhh...imagining that irresistible new car smell? Check outnew cars at Yahoo! Autos.
[Repeater-Builder] RE: repeater antenna suggestions
I appriciate everyones suggestions of either a station master or a DB-*** antenna. I inherited this repeater system. And I'm still learning as I go. There is alot of work to do both inside and outside of the shack. The shack and 160' tower is located on private property owned by a ham, so access and tower work is not an issue. The tower came off an air foce base in 1971 +/-...it is rugged. You climb up a ladder inside the three sided tower. Nice having the ladder, but stinks when you have to carry stuff up...and I'm not a small guy either. I forgot to mention that this UHF repeater is not the main repeater in our system...that would be our 2 meter system, wich has a station master at the top of the tower - fed by a converted Micor and 7/8 pressurized hardline. I have no idea what the UHF stick was that failed, but its a two section fiberglass radome, 9 1/2' long, probably 1 1/4 at the base, and colinear internals. Its final demise was one of the brass tuning sections cracked. I suppose it could be fixed. But I wouldn't put it back on the tower. Maybe in my back yard, but not on the big tower. We had a monsterous wind storm here on October 20...thats when trouble started. The antennas are top mounted on the 160' tower, that is about 660' MSL (total) and about 40 miles from the Atlantic Ocean in FN42. Icing is a concern, as is wind, and with no blocking landscape, on a clear day, on top of the tower, I can see Boston, MA, Lowell MA and Temple Mountain, NH. What we decided with is a Hustler HD9-43050 9dB gain. Looks like a rugged stick, and certainly more rugged that what was up there. For now, it too will be top mounted. Now before you diss the Hustler, read this. I tried to get in contact with several other vendors who still make antennas for the ham band to find a local dealer to talk to, but it appears that these folks just don't want my money. Big names who make commercial stuff too. Too bad. Thats it in a nutshell. I'll let you all know how it works after we install it. Hopefully Mother nature will cooperateIn Decemberin New Hampshire.. 73 all - Everyone is raving about the all-new Yahoo! Mail beta.
[Repeater-Builder] repeater antenna suggestions
Hello all, I know I'm asking a loaded question. Our club just lost our UHF antenna. The last straw was a wind storm. The make of the antenna that was up there is unknown. A stationmaster would be nice, but we cant afford it. A Decibel Products DB series - I hear are maintenance nightmares. We are looking at A hustler HS9-43050 - Any comments on the hustler antennas. Or other suggestions? 73 Steve N1TEC - Check out the all-new Yahoo! Mail beta - Fire up a more powerful email and get things done faster.
[Repeater-Builder] milcom amps
Does anyone have any information/schematics on Milcom International amplifiers. I recently was given two of them, both in VHF service #1) Mod: LP10-10E1C1, FCC: E675JS0009, 10W in/100W out, 150 MHz #2) Mod: P18-40E1-C1L, FCC: E675JS0013, 40W in/180W out, 150-160 MHz 73 Steve __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com 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] VHF Micor Channel elements. (Was VHF Micor and RLC-3)
Kevin, I have no clue. It has probably been 12-15 years since this thing was converted. I assume the channel elements were done professionally since the tag on top of the channel element has 146T85000 on it (146.850 MHz). Why do you ask? Who recrystaled the channel element? !!Because some crystal manufacturers don't know how to !!build a crystal !!that will be modulated. The Micor Station uses a !!KXN-1019B channel !!element. Kevin, I am checking my local contacts for some elements, when I do come across some, and I want to have them re-crystaled, what exactly whould I ask for/tell the manufacturer to do to make sure it is compatible for use in an amatuer FM repeater, besides its for a Micor station, it will be modulated by audio, and the actual crystal should be Fo/12. Thanks! 73 Steve __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com 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] Re: VHF Micor and Link-comm RLC3
Kevin, I have no clue. It has probably been 12-15 years since this thing was converted. I assume the channel elements were done professionally since the tag on top of the channel element has 146T85000 on it (146.850 MHz). Why do you ask? 73 Steve Message: 16 Date: Sun, 05 Feb 2006 20:09:08 -0500 From: Kevin Custer [EMAIL PROTECTED] Subject: Re: VHF Micor and Link-comm RLC3 Who recrystaled the channel element? Steve Hutzley wrote: I have a VHF micor station connected to a Link Comm RLC3. Recently we had a problem with low transmit audio. On the first trip, we replaced the LMC662AIN chips in both the TX and RX audio paths in the RLC3 radio card that used to feed this Micor. We put this card back in slot on of the RLC (where the VHF micor is connected), and noticed that the TX audio pot was at max. Audio sounded OK, so off we go. Next trip to the shack, involved tweaking the IDT pot in the Micor. I ended up with it at max as well. All was good for a few days, and the audio problem returned. Now I get serious, and take some test equipment and manuals to the shack (good thing it's easy to get to, huh?) I go around back to disconnect the AC and DC power to the system to work on it, and while I am there I reseat the connectors on the ribbon cable that connect the card cage, reciever and exciter - and didn't think much more about it. Although, I think this was the cause of the low audio. I pulled out the exciter and checked for the removal of R401 modification to remove the bias on the audio line. The resistor is completely gone - so the mod is done. I put everything back together and started to take measurements. All DC voltages are normal. On pin 12, audio input to the exciter module, I had .2V p-p with the controller generating a 900 Hz tone. At test point Meter 1 - J402-1 I had about 1 V p-p with the PL tone included. Can anyone think of a reason why both of the audio adjustmenst are maxxed out just to get a normal audio output from the Micor. __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com 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] VHF Micor and Link-comm RLC3
I have a VHF micor station connected to a Link Comm RLC3. Recently we had a problem with low transmit audio. On the first trip, we replaced the LMC662AIN chips in both the TX and RX audio paths in the RLC3 radio card that used to feed this Micor. We put this card back in slot on of the RLC (where the VHF micor is connected), and noticed that the TX audio pot was at max. Audio sounded OK, so off we go. Next trip to the shack, involved tweaking the IDT pot in the Micor. I ended up with it at max as well. All was good for a few days, and the audio problem returned. Now I get serious, and take some test equipment and manuals to the shack (good thing it's easy to get to, huh?) I go around back to disconnect the AC and DC power to the system to work on it, and while I am there I reseat the connectors on the ribbon cable that connect the card cage, reciever and exciter - and didn't think much more about it. Although, I think this was the cause of the low audio. I pulled out the exciter and checked for the removal of R401 modification to remove the bias on the audio line. The resistor is completely gone - so the mod is done. I put everything back together and started to take measurements. All DC voltages are normal. On pin 12, audio input to the exciter module, I had .2V p-p with the controller generating a 900 Hz tone. At test point Meter 1 - J402-1 I had about 1 V p-p with the PL tone included. Can anyone think of a reason why both of the audio adjustmenst are maxxed out just to get a normal audio output from the Micor. 73 Thanks Steve __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com 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/
