[Repeater-Builder] UHF Repeater For Sale....
FOR SALE: 1-Maggorie Hi-Pro R-1 UHF Repeater 1-Astron RM-50M Power Supply 1-CAT Controller 1-Arcom RC-210 Controller 1-Wacom UHF Duplexer 1-DB Antenna with 7/8 Hardline (If you want to climb the 225 FT Tower) Buyer must either pick up or arriange shipping. Grady L. Evans w4...@yahoo.com 205-270-9030 W4GLE
[Repeater-Builder] Programing Cables and Manuals needed...
Hello All, I am looking for Programing Cables for the Kenwood TM-V7A Radio and the Standard GX-2000 Radio. i also need the service and owners manuals and any other paperwork for the Standard GX-2000. Please E-Mail me directly at w4...@yahoo.com, and please include a phone number so we can communicate directly if nessary. Thanks, Grady Evans W4GLE
[Repeater-Builder] Re: Micor manuals in pdf ?
Barry, Try this page... http://www.repeater-builder.com/rbtip/micor-index.html Grady W4GLE --- In Repeater-Builder@yahoogroups.com, Barry ate...@... wrote: I have both vhf and uhf Micor repeaters just inherited , Both appear to be 60 watt units and are HUGE ( about 50kg)so any ideas where I get manuals for them in pdf , a quick check and I might dispose of the uhf unit ( I am in Brisbane AU) Thanks guys _ Need a new model in your life? Sell your car fast. http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fsecure%2Dau%2Eimrworldwide%2Ecom%2Fcgi%2Dbin%2Fa%2Fci%5F450304%2Fet%5F2%2Fcg%5F801459%2Fpi%5F1004813%2Fai%5F866383_t=758314219_r=carpoint_tagline_m=EXT
[Repeater-Builder] Need Programing Cables....
HELP, I am looking for programing cables for the Kenwood TM-V7A Radio (PG-4S) and a Standard GX-2000 Radio (PPS/C). If anyone has one that they would be willing to get rid of, Please E-Mail me Directly at w4...@yahoo.com. Thank You, Grady Evans W4GLE
[Repeater-Builder] Kenwood PG-4S Programming Cable...
Hello All, I am looking for a PG-4S Cable for my Kenwood TM-V7A Radio, if anyone has one please E-Mail me directly. Thanks, Grady W4GLE
[Repeater-Builder] Motorola Maratrac...
I have a VHF Moto Maratrac and was thinking about using it for a mobile repeater since it is programable. Can I change the relayed SO-239 to a regular SO-239 for recieve and add another SO-239 in the side for Transmit and it work like that. If this will work I am looking at purching several more VHF and UHF Maratrac for a EMCOMM Trailer. Thanks, Grady Evans
[Repeater-Builder] Kendecom repeater....
I am trying to hook up a remote base and a temp sensor to a Kendecom Mark 4, anyone that can be of help will be greatly appreceated. I need all the info and help I can get. Thanks, Grady W4GLE..
[Repeater-Builder] Weather Alert Radios...
I am wanting to hook up a Weather Alert Radio to my Repeater, I have the Arcom RC210 Controller hooked to a Maggorie R1 Repeater. I would love to use the CAT Weather Alert but just can't afford one of them at this time. Does anyone have any sugestions??? Thanks, Grady W4GLE
Re: [Repeater-Builder] Beware - possible scam for 2-way radio equipment
At 05:18 PM 6/28/2007, [EMAIL PROTECTED] wrote: I just received this email, looks like some of the Nigerian scammers are looking to work on some of the people in the 2-way radio business! He's wanting pricing on lots of 2-way radio gear, going to BASCON NIG LTD. (NIG = NIGERIA?) The email has misspelled words, poor sentence structure and punctuation, etc. as are typical in many Nigerian Scam letters. I would expect that the next step would be for the buyer to pay for everything with a Cashier's check for an amount much more than the equipment, and to then send him the difference. Here's your chance to have some fun if you're so inclined. There are at least a couple of web sites devoted to scamming the scammer. Read about it at http://bustedupcowgirl.com/scampage.html and http://www.419eater.com. Roger Grady K9OPO
[Repeater-Builder] Shiny antennas (was Re: Antenna Gain Specs)
At 12:39 PM 2/21/2007, Steve Bosshard \(NU5D\) wrote: Regarding a clean and shiny antenna, we had a discussion at coffee. The preposition was that radio waves and light have many similarities, ie., wavelength, reflection, Fresnel behavior, and so forth. Using these similarities, a mirror reflects light, and a dark surface absorbs light, so, wouldn't a shiny antenna reflect incoming signals while a dark colored antenna absorbs signals? This may only apply to receiving antennas - hope I can get this idea to market before the April 1 edition of QST.. .. .. de nu5d Cute idea. However... How do you know aluminum that's shiny or black at visible light frequencies is still shiny or black at radio frequencies? Maybe RF black is visible day-glo orange, or pea-soup green. Or maybe it would absorb light so well as to be invisible. I think this would make a good April 1 article. I haven't written one for our repeater club newsletter for a few years, maybe it's time for another. Assuming you don't mind if I borrow your premise. As I think about it a vague sense of deja-vu is forming. Maybe there was an April Fool's article years ago somewhere about invisible antennas? Roger Grady K9OPO
Re: [Repeater-Builder] Mystery Signal
At 03:02 PM 12/12/2006, Dave Schmidt wrote: In the wav file is that white noise or data bursts before and after the dtmf? Sounds like very weak packet bursts to me. Roger Grady K9OPO
Re: [Repeater-Builder] Mystery Signal
At 04:41 PM 12/12/2006, Roger Grady wrote: Sounds like very weak packet bursts to me. I looked at the sample with a waveform editor (Audacity) - there's definitely data riding on the 100Hz tone, at around 5-10% of the 100Hz deviation. It looks like it continues during the DTMF bursts also but it's hard to tell for sure visually. The data looks like two-tone, low tone is probably 1300, high tone between 2000-2100. The higher frequency is harder to measure because there aren't as many cycles of it in a row as the lower. The data appears to start with a pilot of 7 cycles of low tone, followed by 2 cycles of high tone, the pilot lasts for just under 180ms. After the 3rd DTMF burst, there's another 50ms burst of something more complex. It may be a continuation of or another DTMF burst, coupled with the two-tone data but the overall level of the signal is higher, and the two-tone is much much higher than before. All in all, an interesting signal. I hope somebody recognizes it as it's got my curiousity aroused. Roger Grady K9OPO
RE: [Repeater-Builder] Re: Micro Strips @ 220 MHz
At 10:55 PM 2/6/2006, Paul Finch wrote: Kevin, Sorry to bother you again but where do you get these Toshiba S-AV15 modules? I did a Google search and did not really find anything. $49.95 at RF Parts. http://www.rfparts.com/module.html#sav6 Roger Grady K9OPO 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: Multiple receivers one antenna ???
At 12:29 PM 12/19/2005, Coy Hilton wrote: It may sound interesting (and cheap) but the reason that no one else has suggested it is because the impedance miss matches it causes. That is why you need something like a multicoupler whis is first a pre amp to keep the loss to a minimum then sends the pre amp to a splitter that maintains the 50 ohm match required by the receivers on each output port. You can handle the impedance matching by using 1/4 wave sections of 75 ohm coax between the receiver input and the T. The 1/4 wave 75 ohm section steps the 50 ohm receiver input impedance up to 100 at the other end, two of those in parallel at the T gets you back to 50 to match the feedline. Any number of receivers other than 'powers of 2' is more complicated. This does nothing for the loss of course. Roger Grady K9OPO 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] Antenna Downtilt
At 10:14 PM 6/21/05, Dave VanHorn wrote: How do you figure what downtilt angle to order? Presumably it relates to height and radio horizon, but I haven't found the relationship. You're right, but it's normally only a concern on mountain-top repeaters where coverage in the valley several thousand feet down but only a few miles away horizontally can be a problem without downtilt. I don't think there are any towers tall enough in Indiana. Roger Grady K9OPO 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] Dayton check list
At 02:05 PM 5/17/05, Ted Bleiman K9MDM - MDM Radio wrote: 1. Dayton rule book - with complete do's and donts while attending the hamfest and complete fire regulations for the entire state of ohio 2 . over priced tickets and space rental tags 3. Parka - with hood and artic mittens 4. Galoshes or waders depending on the day 5. dry socks and other bits of apparel that may get wet. 6. Tent or canopy with several hundred pounds of lead weights to combat the gentlle 45 mph dayton breeze. 7. Sleeping accomodations within 75 miles of Hara Arena and sleeping pills, eye shade,ear muffs to combat the drunken brawl in the next room or possibly in the same room. 8. 14 handie talkies,pagers,cellphones and belt large enuf to accomodate them all at the same time. 9. goofy hat with antennas sticking out for at least 4 bands extra credit for Beam. 10. laminated dayton i.d badge 11. scrolling electronic dsign front and back telling anyone and everyone who you are what freqs you are monitoring and your email address. 12. Bail Money 13. Map of hamfest grounds with all portapotties marked in red 14. Snow chains - you never can tell in Dayton. 15. spf 55 sunscreen - you never can tell when your in Dayton 16 - Despite all this try to have a fun time. LOL! With the exception of #12, I think I've needed/seen everything on the list at one time or another Roger Grady K9OPO 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] Better RX with feedline partailly disconnected?
At 08:25 PM 3/21/05, Michael Singewald N1PLH wrote: OK, this is making me nuts. I have changed jumpers about 3 times thinking I have a cable problem but I am convinced it is not the cable. Here are the symptoms: Have you tried changing the length of the jumper? Have you tried putting a pad between the receiver and the duplexer? A 3db pad should reduce the sensitivity by that amount, but if there's a severe mismatch the sensitivity might stay the same or actually improve with the pad. Roger Grady K9OPO 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] Co-Phasing two Sinclair SRL-210C4 repeater antennas
At 05:43 PM 11/25/04, VA3EXT wrote: I wondered if anyone could give me some ideas on co-phasing two Sinclair SRL-210C4 repeater antennas together. They both have 50ohm impeadence. I think you would just use odd 1/4 wave electrical harness between the two. I know how to calculate the lenght of the coax. Correct, but be sure to use 75 ohm coax. The odd 1/4 wave of 75 ohm will transform the antennas' impedance from 50 ohms to 100 ohms. Putting the two in parallel with a T gets you back to 50 ohms. I have one top mounted with 1/4 wave spacing from the mast on my 200' tower that enhances the gain the way the dipole face, north. I have another 1/2 wave spacing from the mast and want extra gain twards the east-west which I would mount on the side of the tower below the other. How far apart should the bottom element of the first antenna and the top element of the second antenna? I'm not sure, but my guess would be to use the same spacing as between the elements on the individual antennas. With your varying dipole orientation and distance from the tower you'll probably get an interesting pattern. Roger Grady K9OPO 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] Coaxial Stub Theory
At 02:36 PM 10/14/04, KI4AWK wrote: An open cable 1/4 wavelength will appear shorted to the signal input at its frequency. A shorted cable 1/4 wavelength will appear open to the signal input at its frequency. (a combination can be used to make a BP-BR (band pass, band reject) duplexer.) If someone would confirm this, I would appreciate it. That is what I remember. Check me out. You're right. The general rule is that an ODD number of 1/4 wavelengths will reverse what's at the end (open looks like short, short looks like open). An EVEN number of 1/4 wavelengths repeats what's at the end. Any other length and anything other than an open or short requires calculation for the exact length, frequency, and coax impedance to determine the resulting impedance. Roger Grady K9OPO 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] Off topic a bit.
At 12:59 PM 10/10/04, mch wrote: Simple answer: You're not receiving a police transmission. You're receiving a retransmission of a police transmission. It's like a ham repeater. Anyone on a repeater is not listening to the ham's signal - you're listening to the repeater's signal. That may be technically true, but I wouldn't want to bet on the effectiveness of the argument to an officer who didn't like the idea of you listening to police traffic. Roger Grady K9OPO 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: Astron Supply Help
At 04:15 PM 9/2/04, Steve wrote: I remember buying some stuff at an auto parts store a few years back that was clear and used for automotive distributor caps and such. I can't remember if it was silicone based stuff or not. That was probably silicone dielectric grease. Good electrical insulator, I don't know its heat transfer properties but I'd bet they aren't very good. Roger Grady K9OPO Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] repeater builder web site update
At 07:41 AM 8/20/04, Kevin Custer wrote: The site has always been plain jane because there is no reason at this time to make a free information website flashy. I hope there never is a reason! Any more, too many web pages take longer to load with a DSL that the typical page used to take with a 28.8k dial-up. Roger Grady K9OPO 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] Omnidirectional antenna into 2m band
At 07:34 AM 7/23/04, Gregg Lengling wrote: Once again we see references to gain without the actually reference pointed out. There is a big difference between dBi (dB over an Isotropic, non-existent antenna) and dBd (dB over a dipole, real antenna). And both seem to be less than dBC (dBCushcraft - gain over a mythical worse-than-isotropic reference). Only partly :-). Roger Grady K9OPO 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] List operation
I have a few questions about the mechanics of operating a list such as this. Could one of the moderators email me direct if you're willing to answer some? Thanks a bunch. 73, Roger Grady K9OPO 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: DB224 Element Impedance Info Needed
Assuming the elements really are 100 ohms, you can match 4 of them using only 50 and 75 ohm coax. Off each element, a 1/2 wave 50 or 75 ohm section will transfer the 100 ohm element impedance to the other end. Each pair is T'd, giving 50 ohms at each T. From there, an odd 1/4 wave 75 ohm section will transform the 50 ohms to 100 ohms. These 2 100 ohm points are T'd, giving 50 ohms for the main feed. The above seems easier than using the hard-to-find 35 ohm coax but there must be other factors I haven't thought of that caused Decibel Products to use it. Roger Grady K9OPO 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] Weather Radios
At 10:00 PM 6/6/04, Mathew Quaife wrote: Thanks Jim, just that I work on Wednesdays, I'm just not winning here. If I could get a schematic of this critter then I would be able to tell what I am looking for. All I need to know is which way the diode lights go when the tones go off. Actually if I could just fine one of the old Radioshack units, 22-249 I think was the number, I would have it made. Ah well, this is just the fun of it I suppose. Thanks. I only work part-time, but also on Wednesdays, so I'm not usually home either when the NWS tests the alert system. But I seem to remember once when I was and during the test, the alert lights were not illuminated. I assume all radios would work the same but I can't say for sure. My radio is a Radio Shack (Tech America brand), SAME capable. One other comment - the 1050hz tone is 8 seconds long. Roger Grady K9OPO 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: 75 to 50 ohm match
I have no personal experience with aluminum TV line, but I will relate what Joe Reisert, W1JR, wrote in Ham Radio magazine years ago. Joe was an avid V/UHF dx'er and moonbounce'er and at one point he dismantled all his arrays and measured all the various feedlines and phasing lines, most of which had been up for years. They were a mix of various sizes of Heliax and TV line. Without exception, the Heliax met new specs, and the TV line didn't. His conclusion was that he wouldn't use any more TV line. Now because of his application, he was concerned with fractions of a db. Repeater service may not always be that demanding in that regard. But personally I think Heliax or equivalent is worth the price. Roger Grady K9OPO 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/
