Re: [Repeater-Builder] New file uploaded to Repeater-Builder
Typical, It is in the repeater builder files section under FluX Research and D Squelch. On 4/18/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: At 4/18/2007 20:50, you wrote: Could you do a plot of the filter section of the D-squelch as well? http://f1.grp.yahoofs.com/v1/MNsmRv0oJkZZ_KsrjFmZi-lYDHv4taQ3FPaOT23GOb29aF5tYBtssauw-8yu2MXxYhI92SCCQUTw9DNFccCvFxAqjA/FluX%20Research/D-Squelch/D-Squelch%2004-18-2007.gif Document not found error. Bob NO6B Yahoo! Groups Links
RE: [Repeater-Builder] New file uploaded to Repeater-Builder
Good Morning This might work Too http://tinyurl.com/2bftsn Thanks for all the Hard Work too Don KA9QJG
Re: [Repeater-Builder] New file uploaded to Repeater-Builder
Possibly, I think yahoo changes the like to it's files periodicly to keep people from bandwidth leaching, Or to prevent access to a file unless you are subscribed to that list. On 4/18/07, Don KA9QJG [EMAIL PROTECTED] wrote: Good Morning This might work Too *http://tinyurl.com/2bftsn*http://tinyurl.com/2bftsn Thanks for all the Hard Work too ** ** *Don KA9QJG *
RE: [Repeater-Builder] New file uploaded to Repeater-Builder
At 4/18/2007 23:19, you wrote: Good Morning This might work Too http://tinyurl.com/2bftsnhttp://tinyurl.com/2bftsn Thanks for all the Hard Work too Don KA9QJG OK, can see that link. Will run sim. when time permits. Thanks. Bob NO6B
Re: [Repeater-Builder] New file uploaded to Repeater-Builder
--- [EMAIL PROTECTED] wrote: At 4/17/2007 22:57, you wrote: Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Repeater-Builder group. File: /dual_level_sq.pdf Uploaded by : skyislandpage [EMAIL PROTECTED] Description : Micor replicant squelch circuit using regular parts You can access this file at the URL: http://groups.yahoo.com/group/Repeater-Builder/files/dual_level_sq.pdf I entered the noise filter portion of the schematic (U2A B) into CircuitMaker ran an AC SPICE analysis. Unless I'm doing something wrong, I see 55 dB of gain @ 7.2 kHz! As expected, the transient response is appalling, with lots of 7.2 kHz ringing for several milliseconds. Plots attached. Bob NO6B That might be. I have never run any simulation on the circuit, but I have built two of them and they work fine. 55dB of gain might be about right. The rectified DC is 3 to 4 volts with an input (at that frequency) of 100mV or less. Someone can clean up the filter design, if needed. I do not claim this to be well engineered or an end-all circuit, just something that does work. Tweaking of the resistor or capacitor values might improve things on the simulation. I am not sure if the ringing would affect the operation much, but it probably could be engineered to remove or limit that, but I never saw any problem with the circuit from an operational standpoint. Joe __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
[Repeater-Builder] Price On A Station Master VHF Repeater Antenna
Does anyone know the price new for a Station Master VHF repeater antenna? Or, does anyone know where I can get the price for a new Station Master VHF repeater antenna? Thanks, Rick, WB3BSA http://www.xmirep.com/wb3bsa
[Repeater-Builder] Re: Price On A Station Master VHF Repeater Antenna
List price is $968. Tessco is discounting them for as low as $687.28 --- In Repeater-Builder@yahoogroups.com, Richard A. Blank [EMAIL PROTECTED] wrote: Does anyone know the price new for a Station Master VHF repeater antenna? Or, does anyone know where I can get the price for a new Station Master VHF repeater antenna? Thanks, Rick, WB3BSA http://www.xmirep.com/wb3bsa
Re: [Repeater-Builder] Re: Price On A Station Master VHF Repeater Antenna
In a message dated 4/19/2007 10:37:27 A.M. Pacific Daylight Time, [EMAIL PROTECTED] writes: Tessco is discounting them for as low as $687.28 I think freight for these puppies is well over $100. Will Tessco offer their gold cost schedule to individuals? ** See what's free at http://www.aol.com.
Re: [Repeater-Builder] Re: Price On A Station Master VHF Repeater Antenna
You might check with Telewave. They still discount for Ham clubs if that applies.
[Repeater-Builder] OT: Cell Phone Yagi
I know this is off topic, but I also know there is a wealth of knowledge here. I need to install an outside antenna to ensure continuous cell phone access from my home QTH. The commercial 7-element Yagi is over $100. I know I can make one cheaper than that out of 1/8 dia. aluminum tubing or welding rod. I just don't know what would be the best way to feed it. It would be great to use the feed system seen in Sinclair antennas i.e the folded dipole with the feed line going through the inside of the tubing but I don't know if coax that small is available in the odd impedence required to match the antenna properly to 50 ohm coax . There are other methods like the Delta match, Gamma match etc. but all of these require the feed point to be exposed to the weather. Has anyone tried to build one of these? Please share your experiences. Doug VE7DRF
[Repeater-Builder] mini UHF adapter
All: I have had some luck by filing the outer ring shorter with a flat file. Pigtails to N or PL259 work much better.
Re: [Repeater-Builder] Mini - UHF Connector
Same here in Atlanta. Our last decent local house just went out of business. Wonder how long it will take for thru hole components to go away? N9WYS wrote: I stay away from Radio Shack connectors whenever possible… I had a PL-259 on a jumper that stripped out when I was tightening it HAND-TIGHT onto an SWR meter once… a real piece of crap. R/S overall quality has REALLY suffered over the years. Shame, too, since the other local electronics supply house just went out of business… :-( *From:* Repeater-Builder@yahoogroups.com *On Behalf Of *Vincent Caruso Thats funny, I was just reading your original post and when you mentioned tightening with pliers I was about to reply asking if you were using the RS connectors. I have a friend that used those and could never figure out why he had so many problems. Don KA9QJG wrote: Well Eric it is Probably My fault for Actually using The Mini-Uhf Connectors bought at Radio Shack., Sometimes that is all that’s Close when We are in a Hurry . I guess we get what we pay for, I will check out the ones Recommended. Thanks to all who helped direct and on the Group Don KA9QJG Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Price On A Station Master VHF Repeater Antenna
The equivalant Telewave lists for the same price, $968. I can't recall what the Telewave ham club discount is though. Anything greater than 30% will bring you in lower than the Stationmaster. FYI though, there have been many posts here over the years suggesting that fiberglass coated antennas aren't as suited for repeater operation as are exposed dipole arrays. You might want to read some of those comments before locking yourself in. --- In Repeater-Builder@yahoogroups.com, Steve Kometz [EMAIL PROTECTED] wrote: You might check with Telewave. They still discount for Ham clubs if that applies.
Re: [Repeater-Builder] OT: Cell Phone Yagi
I am using a Cellantenna CAY15 15db yagi which costs about eighty bucks which seemed more cost effective to me than spending a lot of time finding the stock to build one. Works well and pattern is pretty narrow. They use a female TNC termination on the antenna. _www.cellantenna.com_ (http://www.cellantenna.com) _Click here: Yagi Directional Antennas_ (http://www.cellantenna.com/Antennas/yagi.htm) ** See what's free at http://www.aol.com.
Re: [Repeater-Builder] Re: Price On A Station Master VHF Repeater Antenna
My experience with MANY Stationmaster type antennas for VHF is that they develop duplex noise problems. Save yourself a lot of trouble and get the dipole type antenna. As a bonus, the dipole type has a full 6.0 dB gain, and not just 4.5 dB as the 2M Stationmaster does. They have to derate it since the elements are too long to fit in the standard radome. Joe M. Tony L. wrote: The equivalant Telewave lists for the same price, $968. I can't recall what the Telewave ham club discount is though. Anything greater than 30% will bring you in lower than the Stationmaster. FYI though, there have been many posts here over the years suggesting that fiberglass coated antennas aren't as suited for repeater operation as are exposed dipole arrays. You might want to read some of those comments before locking yourself in. --- In Repeater-Builder@yahoogroups.com, Steve Kometz [EMAIL PROTECTED] wrote: You might check with Telewave. They still discount for Ham clubs if that applies. Yahoo! Groups Links
Re: [Repeater-Builder] Re: Price On A Station Master VHF Repeater Antenna
My observation with VHF stationmaster type antennas is if they don't have a support strut, wind motion eventually causes the base decoupling network to crack which, in turn, causes a discontinuity that creates noise. The antenna can be disassembled and re-welded but eventually the problem will return. If you have a top-mounted Stationmaster there's no way to add a center brace for stabilization purposes. For those that like to save money and experiment a bit, one solution is to replace the damaged innards with a gain J-Pole inside of the radome. The one I constructed consisted of a length of #12 wire with a phasing coil and another length of #12 wire connected as per the standard J-Pole feed assembly. As I recall, the overall length was around 16 feet. Since the orginal radome is on the order of 22 feet, the gain J-Pole was hung inside with a light rope tied to the copper tip and spaced such the RG-58 UHF male fitting from the J-Pole matching point was accessible just inside the antenna base. A popular antenna modeling software indicated the gain was only slightly less than the claimed gain for the original Stationmaster. The radiation pattern was identical. Now comes the tricky part. The Q is higher than that of the Stationmaster and hence the bandwidth is less. If the antenna is initially matched on something other than its support structure the SWR at the target frequency will most likely be higher than desired. Also the antenna's radiation pattern may be altered due to feed line coupling. There may be alternate solutions for resolving these problems but the technique I used was to insert a Tee in the feed line near the base of the antenna with a short coaxial stub. Done properly this lets the transmitter 'see' a 50 Ohm load, isolates the feedline from re-radiation and provides a DC short for lightning protection. The secret of this approach is in knowing where to insert the Tee and how long to make the shorted coaxial stub. 73 de Jack - N7OO - Original Message - From: mch To: Repeater-Builder@yahoogroups.com Sent: Thursday, April 19, 2007 12:09 PM Subject: Re: [Repeater-Builder] Re: Price On A Station Master VHF Repeater Antenna My experience with MANY Stationmaster type antennas for VHF is that they develop duplex noise problems. Save yourself a lot of trouble and get the dipole type antenna. As a bonus, the dipole type has a full 6.0 dB gain, and not just 4.5 dB as the 2M Stationmaster does. They have to derate it since the elements are too long to fit in the standard radome. Joe M. Tony L. wrote: The equivalant Telewave lists for the same price, $968. I can't recall what the Telewave ham club discount is though. Anything greater than 30% will bring you in lower than the Stationmaster. FYI though, there have been many posts here over the years suggesting that fiberglass coated antennas aren't as suited for repeater operation as are exposed dipole arrays. You might want to read some of those comments before locking yourself in. --- In Repeater-Builder@yahoogroups.com, Steve Kometz [EMAIL PROTECTED] wrote: You might check with Telewave. They still discount for Ham clubs if that applies. Yahoo! Groups Links
RE: [Repeater-Builder] OT: Cell Phone Yagi
Hello Doug, my opinions and experimentations about Yagi cellular antenna are: 1- Very difficult to tune with spectrum analyser or bird, affected by hand effect. 2- Need a good heliax between radio and antenna. 3- Sometimes an omni 3dB is better than a Yagi. 4- Sometimes Yagi 7el. and more are really sharp in radiation pattern and difficult to align. The best product I think is made by Sinclair or Comprod, the big problem with these products (VERY EXPENSIVE) but its the best solution. Try with a low cost system before, if you can, to see result and grow up if you need best performance. 73 Eric VE2VXT _ De : Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] De la part de Davies, Doug A FOR:EX Envoyé : 19 avril, 2007 14:06 À : Repeater-Builder Objet : [Repeater-Builder] OT: Cell Phone Yagi I know this is off topic, but I also know there is a wealth of knowledge here. I need to install an outside antenna to ensure continuous cell phone access from my home QTH. The commercial 7-element Yagi is over $100. I know I can make one cheaper than that out of 1/8 dia. aluminum tubing or welding rod. I just don't know what would be the best way to feed it. It would be great to use the feed system seen in Sinclair antennas i.e the folded dipole with the feed line going through the inside of the tubing but I don't know if coax that small is available in the odd impedence required to match the antenna properly to 50 ohm coax . There are other methods like the Delta match, Gamma match etc. but all of these require the feed point to be exposed to the weather. Has anyone tried to build one of these? Please share your experiences. Doug VE7DRF
Re: [Repeater-Builder] OT: Cell Phone Yagi
In a message dated 4/19/2007 5:42:12 P.M. Pacific Daylight Time, [EMAIL PROTECTED] writes: Hello Doug, my opinions and experimentations about Yagi cellular antenna are: 1- Very difficult to tune with spectrum analyser or bird, affected by hand effect. 2- Need a good heliax between radio and antenna. 3- Sometimes an omni 3dB is better than a Yagi. 4- Sometimes Yagi 7el. and more are really sharp in radiation pattern and difficult to align. I utilize a cellular repeater with a 15db gain yagi: 2. For runs up to 50 feet, LMR-400 will do fine. For runs less than 25 feet, Rg-213 works OK. 3. Why would you ever want a low gain omni antenna when you're struggling to snag enough signal to operate a cell phone? The site you are looking for is, by and large, going to be low level, not up on a mountain top. 4. Yes, high gain yagis are indeed sharp in radiation pattern but that's a plus, not a minus. It helps the cell phone capture and stick with one cell site rather than running searches. What is the difficulty in aligning the antenna? Assuming you have a cell phone with an external antenna port, you glue the yagi to it and make incremental azimuth changes until you peak the signal. Although they don't advertise it, many cell phones have a maintenance and service screen that will show you the actual -db level of the signal and the channel you are acquiring. ** See what's free at http://www.aol.com.
Re: [Repeater-Builder] Remote Base Antenna
Some rotors had a variable resistor in them for direction, the cornell dubilers come to mind and I think the yaesu's too. Couldn you use some electronic meter face to read of the position on numeric value some how? Steaven Rogers, W4YI wrote: I have a remote base setup on a UHF machine running an RC-210. I would like to be able to remotely rotate a beam antenna via DTMF over the repeater. I have figured a way to do this via the controller, but I have not yet figured out how to know where the beam in pointed. I have seen several brands of electronic compass senors, but not sure if there was a way to incorporate one of these devices to determine beam direction. After looking around, I am starting to think I may have to do something along the lines of using a PC in some sort of configuration to accomplish this. Just not sure how to get the ball going in the right direction. Has anyone else done a project like this? Care to share any ideas? -- Jay Urish W5GM ARRL Life MemberDenton County ARRL VEC N5ERS VP/Trustee Monitoring 444.850 PL-88.5
