[Repeater-Builder] A DB224E antenna...
Greetings. I'm the trustee of our local club's 2m repeater. It's NE of the big town of Joplin, MO. (147.210) What I want to find out, I'm going to ask our club to buy a new 224e antenna (assuming that this is the correct version needed for T147.210 R147.810), and arrange the elements on the north edge of the tower we're on so that 3 elements point to the SW, to favor our town so that HTs can work it, and one element to the ENE to point some energy to Springfield for working severe weather. Altho I'm thinking about trying to link the repeater with either EchoLink or some other repeater to Springfield and just point all 4 elements to the SW. :-) But it's on the north leg (that leg points to the north), so if pointing them to the SW gets the highest gain, that sounds great to me. :-) The point is that there's a DB224 there now, not sure if it's an E version or not, but I think it has some issues right now, so I'd rather just get a new one up and bring the old one down and go thru it at our leisure, plus reorienting it so that we can actually USE it. :-) Anyways, I wanted to know if anyone had one here that was in either new- in-box or barely used condition, how much $$ they go for nowadays, and how hard is it to reorient the elements if it was originally designed / set for omni (3, 6, 9, 12 o'clock). Thanks! Ray, KB0STN Trustee, W0IN
Re: [Repeater-Builder] Polyphaser Question
What do you do when you want to install a small UHF linking repeater on a 4-story building that has no lightning protection on its' roof? (this is to link an ambulance at a hospital to its' base repeater 40 miles away) From what I've heard, it may not be a good idea to hook it to the HVAC, either. (sigh) Ray, KB0STN
Re: [Repeater-Builder] lowband HT antennas
- Original Message - From: "hitekgearhead" >I know I am revisiting this again but I could use some clarification. > > It has been stated before that the Motorola low band helical antennas have a > useful bandwidth of about 1MHz. > > I was just wondering why that was the case, say in comparison to HT antennas > in other bands. For instance, (and correct me if I am > wrong) the mid UHF (430-470MHz) radios often all use the same 6" 1/4 wave > whip. > > What am I missing? I know that the first type of antenna is loaded and the > other is a 1/4 wave whip, but beyond that I don't > understand the fundamental differences that would allow one a wider bandwidth > over the other. Please pardon my antenna theory > ignorance Proportionally, there is less difference between 450 to 470 MHz (20 / 450, or 4.44%) than there is between 30 to 36 MHz ( 6 / 30, or 20%) or even 42 to 50 MHz (that'd be 8 / 42, or 19%). Receive won't be affected very much (although you could measure the difference) but transmitting would have 2:1 or worse SWR. That's why at home I run a j-pole tuned to 52.52 for FM and repeater work, and a 3-el Yagi tuned to 50.2 for SSB work. If I tried swapping antennas for the different modes, I get a 2.5 SWR. I then go oh shoot and flip the switch back. :-) (And on-topic, I'm running 1/4 wave antennas tuned for 51.55 receive and 53.25 transmit. :-) Ray, KB0STN
Re: [Repeater-Builder] MOVs for power supply primary
- Original Message - From: "AA8K73 GMail" > > I added a 130 Volt MOV across the hot and neutral > of an Astron 50 Amp power supply for a repeater > and had an interesting effect. > > We lost AC power and switched over to the generator. > When the load was added to the generator, the Onan's > voltage sagged a bit and the throttle opened to > bring the speed back. It overshot slightly and was > high enough to trip the MOV. That short slowed the > generator down until the voltage was too low and > then the generator sped up again. And again it fired > the MOV and slowed down until it cleared. It kept > oscillating with huge voltage swings until I unplugged > the Astron power supply. That's very interesting, all right. Was this a single-cylinder 3600 RPM generator, or was it one of the twin-cylinder motor-home generators? I used to work for an Onan distributorship back when (70's) and we had a similar problem with a Southwestern Bell setup. They had a 2.5 LK, which was a single cylinder genset that ran at 1800 RPM. They switched a 500 watt load in and out several times a minute. When the 500 W load hit, it did the same thing you had described. I brought up a 1 KW load (heater elements) and plugged them in the circuit full-time, and it worked like a champ, going between about 40% and 60% of full load. Pretty stable. :-) Ray, KB0STN
[Repeater-Builder] OTC: Channel 37
UHF Channel 37 is also used for Medical Telemetry... coordinated by ASHE. Ray, KB0STN - Original Message - From: DCFluX To: Repeater-Builder@yahoogroups.com Sent: Wednesday, April 28, 2010 6:06 PM Subject: Re: [Repeater-Builder] Strange Signal on 158.275(ish) Didn't get enough of it, but I would that might be a prime number sequence like in the movie Contact. See what you get in on UHF Channel 37 (608-614 MHz) which is nationwide reserved for radio astronomy.
Re: [Repeater-Builder] Re: Battery system for portable repeater (non solar)
- Original Message - From: "Eric Lemmon" > Nate, > > A nearby hospital is required by law or regulation to replace on an annual > or biannual basis the SLA batteries in many items of equipment, and the > local radio clubs are the beneficiaries of this policy. Batteries in the 12 > to 40 Ah range are found in portable X-ray, defibrillator, dialysis, > heart-lung, and oxygen generation equipment, just to name a few. Check with > the Operations Supervisor- the person in charge of keeping the hospital > running- to see if such batteries are available for acquisition by local > Hams. Actually, that should be the Biomedical or Clinical Engineering office... (slight plug since I'm a BMET at a local hospital, hi hi) and yes, I do get all kinds of batteries to take home and play with... Ray, KB0STN
Re: [SPAM] [Repeater-Builder] Re: ACSSB [1 Attachment]
Just trying something... Ray, KB0STN - Original Message - From: Marcus To: Repeater-Builder@yahoogroups.com Sent: Saturday, November 14, 2009 9:35 PM Subject: Re: [SPAM] [Repeater-Builder] Re: ACSSB you cannot, as yahoo is C**p i use Gmail for my emailing attachments wb6dgn wrote: HOW THE H*** DOES ONE ADD THE ATTACHMENT TO THE POST. AS USUAL, THIS YAHOO CRAP IS IMPOSSIBLE TO FIGURE OUT. THERE'S GOT TO BE A BETTER HOST THAN THIS JOKE! Tom A. --- In Repeater-Builder@yahoogroups.com, "wb6dgn" wrote: > > If I can figure out how to do it right, I have a scan from the ARRL > Handbook form 1961 and also the License Manual from 1961. Both list the > frequency assignments for the various license classes. You will see > that, for Technician Class license, the 2meter assignment was 145 to 147 > Mc. NOT 144 to 148 as some have stated. If the attachment, titled > ARRL1961 doesn't show up, would a moderator please explain more clearly > than yahoo, how to send it. > Tom DGN > --- In Repeater-Builder@yahoogroups.com, MCH wrote: > > > > I believe the OP is essentially correct. The "2M sub-band" didn't come > > until much later - I was thinking it was the late 70s, but it could > have > > been the early 80s. > > > > Your point was why the 146 MHz pairs were more popular - because the > > techs could not use the 147 MHz pairs. > > > > The 146 MHz segment was originally 60 kHz channels (146.610, 146.670, > > 146.730, Etc.), then went to 30 kHz in most areas - going to 20 kHz > > channels in some, then the 30 kHz was again broken down into 15 kHz > > channels. The sub-band was always 20 kHz until some areas changed > that, too. > > > > Check out some of the older RDs for more info. Some of the early 70s > > ones even listed the Input/Output modulation, such as 5/5 or 15/5 or > > 15/15 (meaning deviation in / deviation out). > > > > Joe M. > > > > wb6dgn wrote: > > > > > > "duh-because when repeaters were first authorized for 2M, they were > only > > > allowed from 146 to 148. 144.5-145.5 didn't come into existence > until > > > the 80's." > > > > > > Close, but not exactly. When repeaters first came to be used on the > ham bands in the late '50s/early '60s the 2m band from 144 to 148 Mc was > only available to General class licensees and above. Novice (yes, > Novice had some 2m voice privileges at that time) and Technician > licensees were only allowed to operate in the 2m band from 145 to 147 > Mc. Therefore if a repeater owner wanted to make his repeater available > to the widest "audience" he had to keep both input and output within the > 145 to 147 range. Interestingly, there was a repeater in the S. F. Bay > area (somewhere down the Peninsula, I believe, maybe Stanford) that did > have it's input and output on 144 and 147+ with the clearly stated > reason that Novices and Techs. were not welcome. Never seemed to bother > anyone I knew; that group carried on some pretty "stuffy" conversations > anyway and there were enough 145 to 147 machines to go around including > at least one AM repeater. However the only repeater at the time (tha > > t I > > > know of) using 600Kc separation was the WB6AAE repeater in the > foothills east of Oakland on Grizzly Peak. If they had a role in > establishing the later standard, I have no idea > > > Tom DGN > > > > > > --- In Repeater-Builder@yahoogroups.com, wd8chl wd8chl@ wrote: > > >> Rev. Robert P. Chrysafis wrote: > > >>> wonder why the fcc does not allow acssb above 30 mhz on the ham > bands? seems > > >>> to me they would want to promote more efficient modes through all > the ham > > >>> bands. > > >>> > > >>> another interesting thing would be to see 2 meter repeaters go to > 2 or 3 mhz > > >>> splits and employ some form of efficient modulation mode instead > of the same > > >>> old 10 khz fm. > > >>> > > >>> and i am sure we will be all dead before this happens :) > > >>> > > >>> one can imagine though. > > >>> > > >>> better tx/rx isolation, cleaner signals, employ some form of > narrow band > > >>> modulation scheme and we could even ease congestion on 2 meters. > > >>> > > >>> > > >>> i still can't imagine how the 600 khz split was decided for 2 > meters when > > >>> there is room for at least a 2 mhz split. > > >>> > > >> > > >> duh-because when repeaters were first authorized for 2M, they were > only > > >> allowed from 146 to 148. 144.5-145.5 didn't come into existence > until > > >> the 80's. > > >> > > >> No-2M is too populated to do any changes. Not gonna happen until > they > > >> just flat stop making FM gear.
Re: [Repeater-Builder] Busy Signal (COS) inverter Circuit.
Hmmm... howz about attaching a phototransistor to the LED to use it to drive a circuit? I don't have a schematic handy but I'm sure there's some out there... Ray, KB0STN - Original Message - From: Rick Szajkowski To: Repeater-Builder@yahoogroups.com Sent: Friday, September 25, 2009 10:47 AM Subject: Re: [Repeater-Builder] Busy Signal (COS) inverter Circuit. thats fine to drive a LED .. but he has an LED and want to use that 'signal' to drive an input on a controller
Re: [Repeater-Builder] Tools
I think this one is it. Thank you all. :-) Ray, KB0STN - Original Message - From: Derek J. Lassen To: Repeater-Builder@yahoogroups.com Sent: Friday, September 11, 2009 10:46 AM Subject: RE: [Repeater-Builder] Tools The tool you want... http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=27013661&ru=http://search.ebay.com:80/27013661_W0QQampsspagenameZhQ3ahQ3aadvsearchQ3aUSQQcatrefZC5QQdfspZ32QQfclZ3QQfromZR7QQfrppZ50QQfsooZ2QQfsopZ32QQnojsprZyQQpfidZ0QQsacatZQ2d1QQsofocusZbsQQfviZ1 At 09:15 9/11/2009 -0400, you wrote: > Speaking of tools, how about the specialized wrenches that > can take the SMA connector > nut loose on, oh, say, Yaesu VX 5 or FT-50's? > > Ray, KB0STN I don't have either of those radios, but are you talking about a spanner wrench or spanner driver? Retaining ring pliers sometimes work too. The ones with interchangable tips are the most versatile. --- Jeff WN3A Individual Email|Traditional ID required) Change settings via email: Switc Visit Your Group_._,___
Re: [Repeater-Builder] Tools
Speaking of tools, how about the specialized wrenches that can take the SMA connector nut loose on, oh, say, Yaesu VX 5 or FT-50's? Ray, KB0STN
Re: Pagers in 2009 - why? (was: [Repeater-Builder] A desense issue)
- Original Message - From: "Jacob Suter" > Seriously... > > Come on, who's for a "Paging Sunset"? Not hospitals... we have a mix of both in-house (local) and alpha-numeric (tied in to a network that hits all 4 states of the corner we live and work in). They're quick and cheap. Even though the maintenance guys are running around with CP-200s listening to a repeater (trying to have a toehold on-topic), we can send a text message to a pager with detailed information (go to Room 497 and fix the nurse call) automatically from the work-entry system. Keeper of the repeater and pager systems, Ray, KB0STN
Re: [Repeater-Builder] Off Topic
- Original Message - From: "Mark" > The biggest problem I have run into so far is loading Win98 onto an older > laptop with only a floppy drive... A friend of mine picked up a laptop with > an interchangeable drive bay, and then bought a CD Drive for the laptop. > Problem is: Win95 (loaded on the machine) won't recognize the drive, even > though it IS seen and recognized by the BIOS. I don't have the Win95 driver disk but I know that there was a version of Win98, SP1, that was on floppies. I also know that you could have played with NT 4.0 on floppies. The only problem with that is that you have to know what you have, and then set it up accordingly. But that could've worked, too. I also have an old laptop that I need to play with (also a bad BIOS battery) that I want to program things with, too. Anyway, I hear you got a solution (bootable Win98) so that should take of ya, too. Good luck. RayKBØSTN
Re: [Repeater-Builder] Repeater controller to be used with MSF5000
Oops, hit the Send key waay too fast. Private reply sent instead. Ray, KB0STN
Re: [Repeater-Builder] Repeater controller to be used with MSF5000
- Original Message - From: "Bob M." To: ; Sent: Tuesday, January 13, 2009 9:13 AM Subject: [Repeater-Builder] Repeater controller to be used with MSF5000 > I'm looking for a low-cost, simple, multi-digit DTMF controller to shut an > MSF5000 repeater down for legal purposes. I've run across one for under $50 but was wondering if there's something else out there that's built and ready to hook up. Function acknowledgement is not needed; if the repeater stops transmitting when I issue the appropriate command, and I can turn it back on afterwards, I'll be happy. > > How are you controlling your MSF5000 repeaters (for FCC-required shutdown > purposes)? > > Are you using the repeater's input frequency for control, a separate > receiver, or other method? > > Controller make/model/cost? > > Interface method (MRTI connector, junction panel DB25 connectors, other)? > > Thanks. > > Bob M. > > > > > > > > > Yahoo! Groups Links > > >
Re: [Repeater-Builder] DTV ch 2 vs 6m
http://www.fda.gov/cdrh/medsun/AudioConf_files/MedicalTelemetryWireless/Lessons_learned.pdf Ray KB0STN - Original Message - From: Hap Griffin To: Repeater-Builder@yahoogroups.com Sent: Sunday, January 11, 2009 4:58 PM Subject: Re: [Repeater-Builder] DTV ch 2 vs 6m The DTV mask specifications are tighter for digital than for analog for out of channel noise. In fact, it takes a special setup to even measure it since spectrum analyzers generally don't have the dynamic range to measure it directly. Hap Griffin WZ4O VP - Engineering SCETV
Re: [Repeater-Builder] DTV ch 2 vs 6m
- Original Message - From: "Paul N1BUG" > After transition I will have a "local" channel broadcasting DTV on > their low VHF channel 2 assignment. I'm curious... does anyone know > whether DTV will be more (or less) susceptible to interference from > ham radio transmissions than analog TV? You're going to have a DTV 02 there in Maine? Wow. Anyway, what happened in Dallas a couple of years ago ought to be noteworthy... I think one of the Dallas stations was testing full output DTV on channel 36, and Baylor University's medical telemetry, which is supposed to be in protected spectrum at channel 37, the lower third of their telemetry went "no signal" when the transmitter keyed up. Their biomed techs were in full panic mode most of that day until they figured it out. Seems that the DTV specs allow for the full 6 MHz bandwidth per channel The excess bandwidth overloaded the tele receivers, which I think were only a couple of miles away. Trying to remember the details. But everyone I've talked to says the same thing, the DTV will take up the whole allocated space, and maybe a half meg more each side. For those 6m folks, that means that everything between 53.5 and 54 MHz may become very noisy and unusable. Ray, KB0STN
Re: [Repeater-Builder] Decibel Products Antenna website
Generally, something that is tagged "For Export Only" means that, for whatever reason, the device is not meant to be sold OR USED in the USA. I see this all the time on medical equipment. If they put it thru the FDA and got approval, it can be sold and used in the USA. If they didn't, it's not. Period. Ray, KB0STN --- On Thu, 1/1/09, Brian K. Gaskamp wrote: From: Brian K. Gaskamp Subject: Re: [Repeater-Builder] Decibel Products Antenna website To: Repeater-Builder@yahoogroups.com Date: Thursday, January 1, 2009, 11:36 AM Ok guys here's another good question in realtion to the Decibal Products antenna. Why is it on one site I looked at to get a quote it says, "For Export Only"
Re: [Repeater-Builder] MTR2000 Backplane Fuse
- Original Message - From: "Chuck Kimball" To: Sent: Sunday, December 28, 2008 5:45 AM Subject: [Repeater-Builder] MTR2000 Backplane Fuse > Good Day Everyone: > > I'm looking for some info on the small fuses on the backplane of the > MTR2000 repeaters. I've got a Instruction/Field Service Manual > 68P81096E30-C, and can't find anything in there on the part number for > the fuse. Apparently Motorola doesn't think those are field > replaceable. ;) > > They are a 5A very small 1/8"x1/8"x1/4* fuse not much larger than a > surface mount resistor - looks to be ceramic with metal ends. I've > seen these once before, but don't know the name of that style to do > any sort of a search on it. LittleFuse. I forget their exact part designation but several models of hospital beds uses them. I had never seen them before and unfortunately got them from the mfgr. of the beds because I needed some overnight and didn't have time to search. I got about 10 of each (they range from 0.5 to 7 amps @ 32 VDC) plus fuse holders for each one for $200. (sigh) I can't give any of the fuses away, but if anyone wants any surface- mounts for these fuses, I think I have about 30 of them that I could give away. :-) Anyway, Newark stocks them, too. :-) Ray, KBØSTN
[Repeater-Builder] Repeater Antenna - Looking for an adapter now.
Greetings again from work. We are looking for a CableWave adapter. Does anyone have a RFS 920242, that's a 15/8" EIA flange - to - N female adapter, the coax is HCC158 / HCAT158. Ray, KB0STN
[Repeater-Builder] Double-checking Andrews connectors with CableWave Heliax
Howdy! We're getting ready to move a repeater to a taller, more robust home. We have access to a run of CableWave 1 5/8" Heliax. Here's our question: Will an Andrew H7PNF work with CableWave HCC158-50J170 Heliax? If not, what Andrew connector will work with CableWave HCC158-50J170 Heliax? Thanks! From the work QTH, Ray, KBØSTN
Re: [Repeater-Builder] Re: Any thoughts on the HYT TR-50 UHF repeater?
- Original Message - From: "Dave Gomberg" <[EMAIL PROTECTED]> > At 05:39 8/24/2008, Louis wrote: > >For the price they get for that thing new, it had better be more than > >2 HT's tied together! Looks like a neat unit! Our club is looking for > >a portable - their VHF unit may be the trick. > > Their VHF unit costs $15K Wow. I guess it depends on who you go thru. Some dealers must have one heck of a mark-up. Some folks that I Googled around were selling the UHF version for (gasp) $600, but the one I saw had a price tag of $250. I haven't looked at the VHF models, but I just can't imagine a 5w VHF for $15k ... unless it emitted gold? lol Ray, KBØSTN
[Repeater-Builder] Any thoughts on the HYT TR-50 UHF repeater?
At our local hamfest today, I saw a little critter called the TR-50. I know that it's basically a pair of HT's coupled together with a power supply, but that's as much as I can figure out. It also says it's good from 440 thru 470, and they claim it's type-accepted by the FCC for 12.5 service. The main web page appears to be out of China (.cn) and it's down at the moment. Is it cool or [EMAIL PROTECTED] Other thoughts? Thanks! RayKBØSTN
[Repeater-Builder] Connectors needed Heliax
Greetings. My partner and I are looking for a couple of connectors for our club's repeater. We need to double-check the heliax but we think it's Andrew 1 5/8" AIR coax, so here's the part numbers he gave me: PN: 2216A DESC: Adapter, N-Female to 1-5/8" EIA 50 Ohm PN: H7PNF (Old number 87PN) DESC: Connector, 1-5/8" to N-Female We'll need ONE EACH, used is okay if in good shape. Anyone got any collecting dust? Give me your price, shipped to 64801 (Joplin, MO). Thanks! Ray, KBØSTN
Re: [Repeater-Builder] Switching a Repeater Betwen AC Sources
Sorry, Ron, I disagree with the relay idea. If it's critical that the radio power supply be up all the time, then run it in the emergency circuits, which ARE active all the time. Our main ambulance radio and our maintenance repeater are on emergency power, as I specificied and coordinated the istallation of both of them myself. The only switching occurs when the power goes down, all receptacles (both white and red are now dead) then the generators fire up within 15 seconds, stabilize, and transfer the feed of the red receptacles from the outside utility to the generators. Power switches back automatically after utility power has been restored and stays up for at least 5 continuous minutes with no dropouts. Then the generators run on cool-down for at least 10 minutes. My CBET rating means I'm certified as a Biomedical Equipment Technician on 6 levels of the proper care and feeding of medical instrumentation, including power supplies. :-) And, Laryn, I re-read your initial statement. You had 2 repeaters AND a computer on the same circuit, and it tripped? Again, what all was on that circuit? If the printer was also on that same circuit, you need to get it off the red and on the white. But even 100 watt repeaters with linear supplies should only draw 4 amps each on full load, plus 4 for the PC and display. Something else is on the circuit. Shame you can't take pictures. Check with the hospital electrician and see what's up. Good luck! Ray Ron Wright <[EMAIL PROTECTED]> wrote: Laryn, Your thinking is good. A simple relay, 3 pole/double throw would do what you want and power the relay coil with your normal AC power. When it goes the relay drops out and connects the repeater to the RED emergency outlet. As someone else suggested switch all 3 wires of hot, neutral and safety ground just to make sure you are not connecting something that you should not. Some suggest runing the repeater on the RED emergency outlet and all else on the normal outlet. You need to check to see if this RED outlet is powered all the time and not just when the gen/emergency power is running. Since it goes to the generator it might not be. Easy to check by plugging a lamp under normal power conditions. The only problems I see is the sudden switching back and forth that might occur quickly serval times in a short period. Like turning on/off the repeater power supply rapidly, but don't think this would be an issue. 73, ron, n9ee/r >From: Laryn Lohman >Date: 2008/07/13 Sun PM 08:17:51 EDT >To: Repeater-Builder@yahoogroups.com >Subject: [Repeater-Builder] Switching a Repeater Betwen AC Sources > >We have two repeaters, plus an IRLP computer, on one emergency-fed >circuit at a hospital. There are normally no problems with this. >During a recent storm, the AC panel circuit breaker tripped, taking >everything down in the middle of our Skywarn net. > >There are two receptacles near our equipment. One is normal power, >the other is the red Critical Power receptacle. What problems would >anyone see if we would feed everything from the normal power circuit, >and if it would ever trip off, switch to the red receptacle. That >way, if lightning trips the normal circuit, we would instantly feed >our equipment from the red receptacle. > >This sounds so simple, and I'm inclined to build such a setup, but am >I missing something obvious that could cause problems? Any better ideas? > >Laryn K8TVZ > >
Re: [Repeater-Builder] Switching a Repeater Betwen AC Sources
I work in a hospital, so I have some insight into this. First off, at least in Missouri, the receptacles, wiring, and circuit breakers are rated for 20 amps each. SO, normally, this would not be a problem. In fact, you could probably run the radio systems entirely on the red receptacles all the time. I wouldn't try to put in any kind of relay, or transfer switch, as that's handled down near the generators. HOWEVER, I would definitely run this past the hospital's electricians to ensure that the circuits involved do not have something else sharing the circuit. Sometimes, alas, several receptacles may be fed by only one circuit. This may have been the case with your "white" receptacles as well. So you need to make sure that there's nothing else on that circuit that will overload things. I'll mention this, look and see if there was a laser printer on the white circuit. They have high instatenous loads as they heat up the fuser drum, and it might've been the combination of your power supplies and the printer coming on that tripped the breaker. And keep the printer on the white receps, as there's almost no reason to have a laser printer on emergency power (unless an administrator orders it). Ray Brown, CBET, BMET II(KB0STN) Laryn Lohman <[EMAIL PROTECTED]> wrote: We have two repeaters, plus an IRLP computer, on one emergency-fed circuit at a hospital. There are normally no problems with this. During a recent storm, the AC panel circuit breaker tripped, taking everything down in the middle of our Skywarn net. There are two receptacles near our equipment. One is normal power, the other is the red Critical Power receptacle. What problems would anyone see if we would feed everything from the normal power circuit, and if it would ever trip off, switch to the red receptacle. That way, if lightning trips the normal circuit, we would instantly feed our equipment from the red receptacle. This sounds so simple, and I'm inclined to build such a setup, but am I missing something obvious that could cause problems? Any better ideas? Laryn K8TVZ
Re: [Repeater-Builder] Re: Control Link
- Original Message - From: Howard Klino > SERA does require that you co-ordinate your control frequency. It will be > an unpublished frequency. Also suggest that you use a sub tone. They will > probably request that anyway. Missouri Repeater Council is thatway, too. Ray KBØSTN
Re: [Repeater-Builder] NASA audio on IRLP?
- Original Message - From: "tony dinkel" <[EMAIL PROTECTED]> > Does anyone know of an IRLP reflector or node that has non-shuttle mission > audio of the ISS comms on it? Working on it... the moderator of the list at [EMAIL PROTECTED] streams pre and post-launch (and landing) audio via http://kscops.com - he also mixes in Recovery Ships SSB when possible with conditions at that time. I've asked him if he carries all the mundane traffic, haven't heard back from him yet. Ray KBØSTN
Re: [Repeater-Builder] Off Topic (but with on topic questions): NTIA propaganda
- Original Message - From: "MCH" <[EMAIL PROTECTED]> > I have yet to see any station share their DTV channel with another > station. (which would save spectrum) I was looking at my local area, and there's at least one example... in Springfield, MO, new DTV 44-1 will be the NBC affiliate, while 44-2 will be the CW (and 44-3 will be "Weather Now", I guess it's a clone of The Weather Channel?) I was trying to prove or disprove our local (Joplin, MO FOX station being simulcast on a DTV when they move, but I can't find it yet... aah. Here, I found that the CBS affiliate, currently on 7, will move to 13, and Fox, currently on 14, wants to coexist on 13, but hasn't gotten approval yet... > So, there may be more content, but station WXYZ will still use the full > 6 MHz. If my local area is any indication, they will simply add channels > such as full time traffic and WX. (like you need 6 channels of WX > forecasts) Yup. Our local PBS stations will be running 4 channels on each of the local DTV frequencies, the "regular", the HD, Kids, and You. Eeh... > I've still seen nothing to tie the DTV in with giving PS more spectrum. You sure it wasn't the fact that they want to vacate the 700 MHz chunk of the spectrum? Other than that, the only thing I can think of, and boy is it a long shot, is that the FCC is trying to get _all_ the tv off of channels 2 thru 6... nah, never mind. :-( _Ray_KBØSTN
[Repeater-Builder] FW: Rogue cell phone has 911 on redial
Just wondering, I hope this is not an amateur repeater placing a 911 call with an old bagphone... _Ray_KBØSTN November 18, 2007 5:30 PM CST A rogue cell phone is not accepting calls, but it sure likes to dial 911 operators in eastern Iowa. Operators at the Black Hawk County Consolidated Communications Center said that they received about 400 calls from the same cell phone last week and that no one seems to be on the other line. "That's it right now," said Dispatcher Chuck Hosier, as a phone rang in the background. "It will ring in, and it's an open line. Sometimes it rings in and drops off." Officials can't locate the phone but have figured out that it is an old line not currently associated with a cell phone provider. Such phones, once charged up, can still place 911 calls under Federal Communications Commission rules set in 1994. The cell phone can't receive calls, and emergency workers haven't been able to track the owner through service records, either. "With this, we are pretty helpless," said Judy Flores, the center's administrative supervisor. Officials are suspicious that it could be a prank - but they say it's not funny and potentially dangerous. Until the source of the calls is found or they stop, dispatchers still have to answer every call just in case someone is on the line with an emergency. Copyright © 2007 The Associated Press.
Re: [Repeater-Builder] KENWOOD TKR 750 Installation and problems-HELP!!
Hi, Jim... I'm trying to do the same thing, to cover the interior of a 6-floor building with a LMR VHF repeater, and I tried suggesting a 1/4 wave mounted upside down as you suggested, and the Motorola guy scratched his head and said "WTHeck?" He was still trying to sell me a DB224 to cover the inside of the building. :-( Thanks for the confirmation! _Ray_KBØSTN - Original Message - From: Jim Brown To: Repeater-Builder@yahoogroups.com Sent: Monday, October 29, 2007 11:22 AM Subject: Re: [Repeater-Builder] KENWOOD TKR 750 Installation and problems-HELP!! One suggestion is to go to a simple ground plane antenna, and mount it upside down on top of your terminal building. The gain in an antenna will concentrate the radiation out on the horizon, which is not what you want. The upside down ground plane with no gain might be your best bet to have local coverage and have coverage directly beneith the antenna. 73 - Jim W5ZIT
Re: [Repeater-Builder] Micor Mobile Radio Connector
- Original Message - From: "Eric Lemmon" <[EMAIL PROTECTED]> > FYI: The 37-contact female connector that plugs into the front of a Micor > mobile radio is still available from Motorola Parts. It is Part Number > 0184307A89, for about $55. The obsolete part number for this plug is > 1V84307A89. Question - is this defined as a Sub-D-37, or as a "high-density" 37 ? If it's only 2 rows of pins, 19 above 18, then I can still get sockets and cables for this connector, as it's commonly used in Hill-Rom hospital beds. But if it's the high-density one, with 3 rows of pins, I've seen it on some other things but not lately, on other medical equipment. Just thought I'd toss that in. :-) _Ray_KBØSTN
Re: [Repeater-Builder] Re: Replacement of an older Repeater
- Original Message - From: [EMAIL PROTECTED] > > In a message dated 4/15/2007 9:10:32 A.M. Pacific Daylight Time, [EMAIL > > PROTECTED] writes: > > I thought manufacturers were required by some obscure law (federal?) > > to be able to supply parts for any item marketed for 7 years after > > it's sale... or maybe I was dreaming. > > There are such laws, but as a practical matter they are worthless because > there is no > cap on what they can charge for replacement parts. The most prolific abuser > of these > laws with astronomical replacement parts cost for older models is the > automobile industry. With the medical repair parts industry being a close second drop me a note off-line and I'll give you some examples. :-( _Ray_KBØSTN
Re: [Repeater-Builder] Re: wanted ISD1420p Voice chip
One, please... _Ray_KBØSTN
Re: [Repeater-Builder] GMRS and FRS
- Original Message - From: "skipp025" <[EMAIL PROTECTED]> > One of my more serious GMRS friends just hates the FRS radios. > When the high side splinter frequency users use ctcss they often > get into some of the older wide gmrs repeater receivers. I have one question, and I know it's off-topic, but I'm looking for some help. I have someone in my area, about a mile away, that is transmitting night and day, non-stop, on a FRS frequency (channel 1, 462.5325 MHz). I suspect that it's someone monitoring a parent's or grandparent's house. I know where the house is located. I don't think there's a GMRS repeater in town (at least, none that I can find by licensing or by radio ID) so I can't test for willful interference. Also, there's no tone or digital code going out, just a carrier with a bit of audio once in a while... So the question is, is this guy doing anything illegal by broadcasting 24x7 inside a house, like an old baby monitor, on a FRS frequency? Please direct replies to me at [EMAIL PROTECTED] so as not to clutter up this fine resource list. Thank you. _Ray_KBØSTN
Re: [Repeater-Builder] OT - Jeep Cherokee
> Anybody interested in starting a "OT - Jeep [EMAIL PROTECTED]" forum ? [EMAIL PROTECTED] HAMXJ, the place for Jeep Cherokee enthusiasts to talk about using amateur radio technologies to improve their Jeep adventures. See ya there... :-) _Ray_KBØSTN P.S. I'm also stopping posting on this thread. 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] OT - Jeep Cherokee
- Original Message - From: "JOHN MACKEY" <[EMAIL PROTECTED]> > I recently acquired a 1992 Jeep Cherokee with the 4L engine & 4 speed > automatic transmission. Anyone have any experience to know if I should expect > to have any RFI problems from this vehicle? I have a '91. It has a little bit of spark noise because they didn't put the right spark plugs in it the last (actually, only) time I had the plugs changed. > I want to put the following bands of radios in it: > HF (10-75 meters) > 6 meters > 2 meters > 440 MHz > 902 MHz > CB (11 meters) > > Any other advice from those who have had Jeep Cherokees for mounting radios in > the Cherokee would be appreciated. Man... if you aren't running a 706, you're gonna run out of room unless you get one of those professional rack setups like what police departments use. I have a FT-60 (6m only all-mode) and an Icom 2720 under the dash on the left side, I used one long thick metal strip to grab as many screws under the dash itself, then I hung the radios from the strip. I need to hang an APRS radio on the right side somewhere. :-) Good luck. Off to work. :-) _Ray_KBØSTN 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] Minor OT
Title: RE: [Repeater-Builder] Syntor X conversion to 222 as a user radio? Can I mention one thing that may help? I'm running WinDoz 98SE but this works... hold down the CTRL key and then use the scroll wheel on your mouse to increase, or decrease, the screen font size. Works on almost every message. Off to work, _Ray_ KBØSTN - Original Message - From: N9WYS To: Repeater-Builder@yahoogroups.com Sent: Monday, April 03, 2006 12:36 AM Subject: RE: [Repeater-Builder] Syntor X conversion to 222 as a user radio? His font looks OK here. Could it be your browser/client is making the change in the background?? Mark - N9WYS From: Repeater-Builder@yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com] On Behalf Of Lee Williams Sent: Sunday, April 02, 2006 10:50 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Syntor X conversion to 222 as a user radio? Glenn,your small font is killin ushave mercy on us with lo-res monitors and failing eyesight! [EMAIL PROTECTED] wrote: I've converted Maxtracs to 222 mhz. You may want to read my mod at http://members.aol.com/w8ak Glenn 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. 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: Praise for the hams!!!! - Public Information
- Original Message - From: "N9WYS" <[EMAIL PROTECTED]> > Maybe down south there has been a plethora of publicity, but up north here > we seldom heard of the ham efforts, if at all. It's as if its another > world. All the press is showing up here is how New Orleans hasn't overcome > their problems yet. They don't even talk much about Biloxi or Gulfport - > just New Orleans... National Public Radio did a piece last Friday on people in Mississippi that were affected much more by Hurricane Rita than Katrira. Surge tides carried salt water up to 20 miles inland, ruining the ground so badly that even grass won't grow on it, let alone crops. > It's great to see and know that hams came together - after all, that's one > of the reasons we're allowed such "latitude" with spectrum, etc. And public > service is one of the reasons I got involved in ham radio. But the real > story of amateur involvement in the Katrina ordeal has been lost to the > masses - at least in my part of the country. Just as people in the South can't comprehend a massive snow- and ice- storm that paralyzes parts of the country for days and weeks at a time. :-( And there have been some Nor'Easters in the past that were pretty high on the scale, but until someone's experienced it, they have no frame of reference to compare it to. I guess I have a well-rounded experience level myself... I've been in a bad ice storm where nothing moved for a week (Tulsa, OK, 1968), and I've survived Hurricane Andrew (Miami, 1992). So, until everyone walks in someone else's moccassins, we will always have a big load of indifference and apathy... "I don't know, and I don't care!" > Just my 2¢ worth... What do you type in for the cent? I hold ALT and type in 0216 to get the Ø character. (need to remember the expanded ASCII character set) _Ray_KBØSTN 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] UHF Power
- Original Message - From: "Paul Yonge" <[EMAIL PROTECTED]> > The policy of some repeater coordination councils to insist on a 100- > mile co-channel separation for UHF (and 120 miles for the lower- > frequency bands) regardless of the ERP seems like overkill to me. In > fairness, they do allow the consideration of terrain/ERP factors at > locations below 3000 feet AMSL (and more stringent requirements for > "very high profile" locations above the 3000-foot elevation). > > In the broadcast radio industry, we only worry about avoiding any > overlap of the 60 db protected contour with another co-channel > station's 40 db interference contour. Is it time to re-think the > coordination guidelines? Absolutely. I have an Elmer here (okay, he's only 4 years older than me but he's a lifetime ARRL member and QCWA member) and he was putting up repeaters back in the 70's. He's been trying, unsuccessfully, for the past 5 years to get coordination on a 2m repeater because his location is 97 miles from another repeater (in a different state) and the other coordinator is holding real tight onto the minimum 100 mile rule. Where do we sign up? :-) _Ray_KBØSTN 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: Need some help with Motorola phone patch
- Original Message - From: "nj902" <[EMAIL PROTECTED]> > If you intend to use it with your R100, the R100 should have the 25 > pin option connector installed and cabled to the QRN4314A interface > board. The patch connects to this connector. I picked up one of these to play with. It works, but it doesn't have this QRN4314A's in place. If I want to connect a controller to the R100, do I need one of these? Otherwise I guess I'll try to find how to hook up an ID-8 to it. :-) _Ray_KBØSTN 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] Generator question
- Original Message - From: "Chuck Kelsey" <[EMAIL PROTECTED]> > I have a 5KW natural gas generator at my house to serve as backup power > to not only the house, but it keeps a repeater and my ham shack up and > running. Congratulations. Not many folks do that. :-) I want to do that myself, but having a total electric house, a 5 kw isn't big enough, I'd need a 12 to 15 kw to run things here. > During cold weather, it doesn't like to start (manual start, pull > cord). I fund that if I place a halogen work light pointed at it for > about 10 minutes, it warms it up enough so it will start OK. > > My question is -- does anyone know of a small engine block heater out > there? I've done Google searches and don't really find anything > worthwhile. No, I don't what to use a light bulb. I want something > that's safe, economical to operate and UL approved. It's a 5 kw running only on natural gas? I'm very familiar with the older Onan gensets (I used to be a parts mananger for a motor home / industrial business back in the 70's). I know they used to have a nice oil heater that was for the NH and JC/DJC models that would keep the whole thing at about 120F in its' enclosure, and that sounds like something you'd need. Either that, or check into the JC Whitney catalog and see what they offer nowadays. If ya need more, chat to me off the list. _Ray_KBØSTN > Chuck > WB2EDV > > > > > > > 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 R100 PL / DPL help
- Original Message - From: "Maire-Radios" <[EMAIL PROTECTED]> > there is the PL units and the DPL units you can not mix them. and only > one tone per repeater. also you don't need the rib. I got two questions on the R100. On the board that is attached to the lid, when you unlock it and rotate it up, at the top edge, are spots for 3 switches. When Repeater Disable is on, the LED on the corner lights up. I presume that that inhibits the entire repeater. But there's a spot for PL disable (the switch is missing but there's evidence that something was there). If a switch is installed and flipped on, will it disable the PL / DPL ? And, I presume the big connector in the center of that same board is the connection for "accessories" like a controller? I'd like to find how to connect something like an ID-8 or maybe a NHRC-2 into it, mostly for Part 90 ID. :-) Thanks! _Ray_KBØSTN 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] RC 1000
- Original Message - From: "va3vkk" <[EMAIL PROTECTED]> > Repeater controller > RC 1000 Micro Computer Concepts > I have enabled all the necessary options including dial 9 > but can't get connected to the line > Perhaps some one can tell me what needs to be enabled for the patch to > work I don't know very much about the RC1000 except for these things: 1) There's a Yahoo email group just for them; 2) Use only the instruction sheet that came with the unit, as I've heard that there are several variations on the RC1000; 3) If you trying to dial 9 to connect, you must be trying to get thru a PBX of some sort... you may need to force a comma pause after the 9 to acquire your second dial tone; 4) Your PBX connection may be all digital or hybrid, instead of analog, in which case the RC1000 may not be suitable for accessing the PBX. Good luck! Ray Brown, KBØSTN 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] Back up battery
- Original Message - From: "Eric Lemmon" <[EMAIL PROTECTED]> > That's a very good price. Another possibility is to get year-old 12V > 26Ah SLA batteries free from your local hospital. It must be a law that > portable X-ray, cardiac defibrillator, and dialysis machines must have > their batteries changed out every year. Check with the Operations > Manager at your local hospital. Not necessarily a law, just following the mfgr. guidelines...Some devices are strongly recommended to change out the batteries every 2 years. But yeah, find your local hospital's biomed or clinical engineering folks, and you'll be in batteries for life. :-) The big winner will be getting the batteries from a GE AMX-4 portable x-ray machine, which uses *9* 22ah 12v batteries, and all 9 are replaced at once or the machine doesn't recalibrate well. But I digress. :-) _Ray_KBØSTN 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] Stainless hardware
- Original Message - From: "n1iic Jason Greene" <[EMAIL PROTECTED]> > Greetings, everyone. > > I am looking for a source for stainless hardware including up to 2 1/2" > u-bolts, nylock nuts, washers, etc. I have searched and can't find the right > vendor. In a word... http://www.smallparts.com/components/ _Ray_KBØSTN 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] Crystal pair...
Howdy, everyone. We *finally* got coordination for a moderate- to wide- range UHF ham repeater. The repeater is a C64RCB-3105AT Compra. Does anyone here happen to have a set of crystals for it for 442.775 out, 447.775 in? If not, without starting up a huge debate again, in y'all's opinion, who's the best people to send my set of 462.975 xtals in to for a new set? Thank you! _Ray_KBØSTN 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] Looking at a UHF repeater...
- Original Message - From: "Juber, Stanley C." <[EMAIL PROTECTED]> > What do you plan to use the repeater for? I was planning on letting my hospital's Security use it. I am the radio officer for my hospital, and I know that we never have used MED frequencies at any of our 3 facilities. We have the HEAR simplex radios, at 155.340 simplex. A competiting hospital (1 mile north of our biggest facility) is still licensed to use MED frequencies, but I know that they only use one of the MED frequencies and that's for dispatching their helicopter. < snip > > The exact > use for each channel, as well as frequency coordination for these channels, > must be approved by your state's emergency medical service (EMS) regulatory > agency - and the EMS regulatory agency must sign off on your application if > you plan to use the MED frequencies, or other frequencies reserved for > medical use. The State of Missouri's EMS agency does not regulate radio frequencies any longer. Personally, I think that they ought to, but they don't. I will admit that things back your way (back east) are far more structured. I did a Google search only on 462.975, and got over 1,000 hits. I found one example of non-EMS, high-powered licensing in use (oddly enough, for security for a hospital). What was interesting was that I also found this frequency in use (low power) at NASCAR racetracks by some of the NASCAR drivers! But that's a different subject, not going there. :-) > My point is, that use of the MED channels is highly structured, and you need > to make sure that what you want to do fits in with your state's plan. The > folks in charge of your emergency room should be able to tell you which > agency regulates EMS in your state. As I said, our state currently has no plan. The biggest cities, Kansas City and St. Louis, went ahead and implemented their plans when the MED freq's first came up. I went ahead and bought it a few days ago, but I haven't had time to check with the IAFC for coordination. It'd be interesting to hear what they say. And I know it's definitely not modern. It was owned by our local ambulance company, but I don't think it's been turned on in several years. And, if all else fails, I'll tweak it into a GMRS repeater, or maybe even down into the ham band. _Ray_KBØSTN 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] Looking at a UHF repeater...
Howdy, everyone. I have an option to buy a working, used repeater from a friend of mine. It's a Motorola, formerly owned by our local ambulance company. Looks like it was in operation from 1988 until at least 1994. The model is C64RCB-3105AT. According to Kevin's info on the web page, it is a Compra-Station, between 70 and 99 watts, 403-512 MHz, RC series (?), 120 VAC, PL, Narrow channel, T1/R1, DC remote, and RT repeater. It's on 462.975 / 467.975, with a PL. It looks like everything's there... PA, exciter, card cage, reciever, power supply, and the 4 cavities. It has the Squelch Gate, TimeOut timer, DC transfer, Station control and Line driver cards installed. I have NOT turned it on yet, wondering if there might be some issue with the p/s caps, being suddenly turned on after being off for several years, don't want it to go up in smoke, eh? :-) SO... this brings up a bunch of questions. Some directly apply, others, well, we're not all amateurs here, are we? :-) 1) He's asking $200. Does that sound like a good price for it? :-) 2) What's the duty cycle? And, if it said narrow channel, is it 12.5 MHz spacing, or 25? I'm eventually going to put it in my hospital, which ironically does NOT have any equipment on this frequency or any of the local med frequencies, but it'd be nice to put in 12.5-capable equipment, otherwise I may just convert it to amateur. 3) Our competing hospital, 1.5 miles away (only 2 of us left here in town) is licensed for all the med frequencies but I don't think they use any of them. The ambulance system (our hospitals jointly owns the ambulance) dropped all its' med licenses a couple of years ago... In fact, I'm not sure they have current licenses for their HEAR radios, and they use city-owned radios for dispatch and talking to the hospitals. So... what kind of traffic is allowed on a med freq? 4) And finally, I know I got to go thru our radio coordination (IAFC, I believe) before I file with the FCC but... trying to look at FCC form 1070, I think we'd be under LMRS, PMRS, below 470 MHz, which would be $150... right? And I wonder if I really need to go thru the IAFC? :-) I thank you for your time. _Ray_KBØSTN 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] Micor Delay Line
How much of a delay does it give? _Ray_ KBØSTN - Original Message - From: Paul Finch To: Repeater-Builder@yahoogroups.com Sent: Monday, December 15, 2003 9:03 PM Subject: RE: [Repeater-Builder] Micor Delay Line By the way, if anyone needs some let me know, I have several. 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 the Yahoo! Terms of Service.
Re: [Repeater-Builder] What is this board?
- Original Message - From: "Adi Linden" <[EMAIL PROTECTED]> > > It is CTCSS encode/decode...didn't you see my other postthat's what > > the MN6520 chip is! > > Great! Thank you. Sorry, I didn't read your post until after I replied. > Any idea where I can find information on this chip? I've goggled for this > extensively before posting the question here. No useful results searching > the web. If it is the same chip used in the Kenwood 601/701/801 radios, it is a PROM chip that has a built-in decoding system, used with a programmer, to burn the PROM with info. A drop-in replacement for the chip is a 74ls188 PROM. Simply drop yours into a programmer, read it, analyze what you need to tweak, then burn it into a 188 PROM chip. I had a 601, a ham Elmer and I decoded what was on the chip, what it did, and decided that a PROM would be much easier to handle than getting the Kenwood programming tool. (In the 601, two chips controlled the xmit and rec frequencies, and a 3rd on a separate board did the CTCSS.) I thought I still had the old PROMs here, but I still have the first test-set of where these hard-wired pins will put a -601 on F1 at 52.525. Probably won't help you out, but it's in the right direction. :-) _Ray_KBØSTN Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
