Re: [Repeater-Builder] Digest Number 3483
Some ham friends of mine have these devices and they work great for just the thing you want to do.Repeater-Builder@yahoogroups.com wrote: There are 3 messages in this issue.Topics in this digest:1. Re: DeviationFrom: Nate Duehr <[EMAIL PROTECTED]>2. Re: Wireless Auto PatchFrom: Nate Duehr <[EMAIL PROTECTED]>3. Re: Wireless Auto PatchFrom: Mike Morris <[EMAIL PROTECTED]>Message: 1 Date: Sat, 03 Dec 2005 01:01:03 -0700From: Nate Duehr <[EMAIL PROTECTED]>Subject: Re: DeviationKen Arck wrote: At 05:30 PM 12/2/2005 -0500, you wrote: Shouldn't the touch tone pad tone be set at the maximum deviation or nearly so? ---I've always found around 3 Khz to be the correct point for most decoders/controllers. You mileage may, of course, vary. Those are steady and not subject to peaks. Also I take it the max deviation should be set with a 1Khz audio tone applied --Best to check with the manufacturer's spec, although most I know of spec a 1 Khz tone, yep.An interesting exercise is to "sweep" your audio path by doing various tones and see if your repeater's audio path has a "slope" to it.Certain to-remain-un-named controllers are rumored to have an inappropriate value published in their RC circuit for de-emphasizing audio if they're being fed by a discriminator.1 KHz is the "usual" test point, but there's nothing stopping someone from setting 1 KHz to whatever deviation their controller/repeater manufacturer recommends and then measuring and plotting 440 Hz, 800 Hz, 1200 Hz, 1800 Hz, 2200 Hz, etc.Sometimes you find out why your repeater sounds "funny", doing experiments like that. :-) Link radios -- you can do the same thing.Nate WY0XMessage: 2 Date: Sat, 03 Dec 2005 01:13:59 -0700From: Nate Duehr <[EMAIL PROTECTED]>Subject: Re: Wireless Auto PatchTim Horvath wrote: I have a repeater in a remote aera with no phone service. Can I use a Cell Phone and interface it to my cat-1000 controller? If so How? I want it to receive and send calls. Thanks, TimIf your CAT-1000 controller has a regular autopatch on it, something like this might be useful:http://www.phonelabs.com/prd05.aspThere are a few companies making these, and they're popular in Europe where many people don't bother having a land-line phone anymore -- they just drop the cell in one of these when they get home.Never tried it myself, but looks like it would work fine, if the cell coverage is good at your repeater site.Nate WY0XMessage: 3 Date: Sat, 03 Dec 2005 00:23:45 -0800From: Mike Morris <[EMAIL PROTECTED]>Subject: Re: Wireless Auto PatchAt 10:02 PM 12/2/05, you wrote:I have a repeater in a remote aera with no phone service. Can I use aCell Phone and interface it to my cat-1000 controller? If so How? Iwant it to receive and send calls. Thanks, TimThere is no reason that you can't link a phone line into your repeater.Besides it saves paying an additional cellphone bill:Or if you do want a commercial product, youwill have to dedicate a cellphone to it:A friend of mine has one with the bluetooth adapter.When he arrives at home he simply plugs the cellphoneinto the charger and lays it next to the unit. The cellphoneappears as line #3 on every phone in the house. He isforced into using this device since the cellphone coveragesucks in his neighborhood - the front bedroom on thesecond floor is the only place he can receive or makea call.Mike WA6ILQYahoo! 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/ 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] Radio Mounts
Gamber-Johnson -Original Message- From: Rich [mailto:[EMAIL PROTECTED] Sent: Saturday, May 01, 2004 11:33 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Radio Mounts Looking for CB Universal mounting brackets. Right angle brackets with a hole and a slot. Radio Shack quit stocking them. Do you know of a site? I want to mount radio control heads at the museum. Rich 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] Mast Materials
Schedule 80 2 steel will do just fine. -Original Message- From: Daron J. Wilson [mailto:[EMAIL PROTECTED] Sent: Sunday, April 25, 2004 08:50 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Mast Materials I need to raise a full size Sinclair collinear up about 20 from a substantial I beam steel mount. I've got access to schedule 80 steel conduit, as well as other pipes, but am not sure how that compares to a 'reinforced mast', other than it is heavier. What do they do to reinforce a 2 mast? Obviously if I can use what I have it would save money, I had thought of dropping a piece of angle iron inside the full length, drilling holes and welding all three edges of it where it touches the pipe several places along the way and then replating, but that sounds pretty heavy. Daron J. Wilson, RCDD ) ) Telecom Manager ( ( LH Morris Electric, Inc. ) ) (541) 265-8067 office _|| mmm! (541) 265-7652 fax ( || coffee! (541) 270-5886 cellular \|| [EMAIL PROTECTED]|| 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] Re: Is there a relationship between 147.225 and 146.925?
A=frequency 1 B=frequency 2 Formula for your frequency products is 2A+b, 2A-B, 2B+A, 2B-A. Simple math! -Original Message- From: mch [mailto:[EMAIL PROTECTED] Sent: Sunday, April 18, 2004 16:46 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Is there a relationship between 147.225 and 146.925? Michael Singewald N1PLH wrote: First...Wow, you guys are FAST! I cannot believe how many responses in 15 minutes! Thank you all very much. The 147.225 has input 147.925 and the 146.925 has input 146.325. Actually, your input should be 147.825 for 147.225 out. To be honest, I didn't follow Ken's math. Must be that west coast version. ;- Here is how I add it up: 2A-1B: 147.225 + 147.225 - 146.925 = 147.525 146.925 + 146.925 - 147.225 = 146.625 (these are both OK unless you mix the results with the outputs, as each are 600 kHz off the TX of the other repeater) 3A-2B: 147.225 + 147.225 + 147.225 - 146.925 - 146.925 = 147.825 (sound familiar?) 146.925 + 146.925 + 146.925 - 147.225 - 147.225 = 146.325 (again, sound familiar?) Each of these cases results on the two TXs mixing and ending up with products on the inputs of the other. I don't understand the problem with the small difference in transmit frequency. The transmit frequency is still about 1 meg away from the receive frequency of the other repeater. How far apart in frequency would they ahve to be to co exist while running relatively low power? It's not how far apart they are - it's the math associated between them. The mixing products are killing you, not the signal strength. You can have a 5 MHz TX and a 440 MHz TX mix and end up with a product (3A-2B) on the 440 input, and those are 435 MHz apart! I don't know how the guy in Colorado put on 440 repeaters with WWV so close out there. Similarly, 600 kHz signals are bad for 2M repeaters, 1.6 MHz signals are bad for 220, just about everything is bad for 6M depending on where you live ;-, Etc. I don't think a different frequency will be possible since all seem to be taken. Another location is always a drag as well. It may be a drag, but may be the easiest solution. One case in my area had two repeaters that are about 20 miles apart had a very similar problem. I think the frequency outputs were 146.670 and 147.270 MHz. Again, 2B-1A was killing them. The solution on that case, I think, was to change to a BPBR duplexer rather than a notch duplexer. Joe M. 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] GE CUSTOM MVP Ant Relay
Copper coat also works well on the adjusters -Original Message- From: John Sichert [mailto:[EMAIL PROTECTED] Sent: January 19, 2004 18:15 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] GE CUSTOM MVP Ant Relay Gran, The MASTR IIs had a sensitivity problem that was caused by plating differences between the tuning slugs and the casting. Small hairs would grow inside the deck. I believe the MVP had the same problem. GE sold some black goo that you put on the slugs to improve the continuity. I don't know if it would cause such a drastic sensitivity change, but you might want to rock the slugs to see if the receiver sensitivity jumps. As far as the relay is concerned, I have not worked on that many to know if it is a high failure item. John At 08:39 PM 1/19/04, you wrote: Hi Group The club has a CUSTOM MVP (UHF) used as a simplex link. It appears to be intermittent on RX. The sensitivity drops from full quieting to almost readable. We planed a trip (300mi RT) today but the RX fixed itself. We are using the antenna relay in this situation. How is the reliability of that relay? It is hermetically sealed? Is this a reed relay? Gran K6RIF 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/ 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/ 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: SWR between radio and duplexer
Just go to the emr website and surf from there. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: January 04, 2004 20:35 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: SWR between radio and duplexer In a message dated 1/4/2004 8:54:52 PM Eastern Standard Time, [EMAIL PROTECTED] writes: http://www.emrcorp.com/catalog/FullLine/HARDWARE/accessories/HW_FILT_LIN EMATCH_LOAD.pdf Cannot bring up site. Says web site not responding. 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/ 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] Duplex noise on new DB-408 and DB-420's
You should send this to the manufacturer and see what kind of comment, if any, is offered. -Original Message- From: Derek B. McIntyre [mailto:[EMAIL PROTECTED] Sent: January 01, 2004 08:22 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Duplex noise on new DB-408 and DB-420's Thanks for all replies to the Diamond X-500 question several weeks ago. Now, on to another topic. I recently replaced a DB-420 UHF antenna because of duplex noise on a business band repeater. I wasn't sure if it was the antenna itself or the surroundings. It was replaced by a Decibel DB-538 fiberglass 7.5 dB gain which works well. Upon testing the DB-420 which has a date code of 1985, I laid the antenna horizontal on some fiberglass sawhorses about 4 feet above ground and connected the antenna to an MSF-5000 repeater running about 60 watts. With a signal generator running coupled into the antenna line with a Bird directional coupler, about 0.5 uV was fed into the repeater for a full quieting signal. The transmitter was enabled, and everything was silent (no duplex noise). As the transmitter was keyed, I removed all metal objects in the nearby field of the test antenna (including my watch and some change in my pocket) and begun to wiggle each joint on the phasing harness. Nearly every joint I wiggled begun to crackle and pop extremely bad (sometimes breaking the 0.5 uV signal into the repeater). All foil tape was removed to prove it was nothing else making the noise. All lugs and bolts were secure to the phasing harness. We decided to try a brand new DB-408 made in 2003 for the same test. The exact same results. Each junction has duplex noise when wiggled. Thereafter, yet another DB-420 was tested with the same results. The next test was a PD-455 super stationmaster. Not a crack or pop to be found, even when swinging the antenna from side to side and beating the thing from every angle. One of the DB-420's that I mentioned above was cleaned up and the phasing harness re-taped to the mast, and just put back in service atop 150 feet of 25G. For now, all seems very quiet until I shake the guy wires and wobble the top of the tower. Then, slight amounts of duplex noise are heard (which I believe is normal) even though all loose metal has been eliminated and there isn't any other antennas in the nearby field. Q: You'll probably never get rid of ALL duplex noise on weak signals, especially if you're running higher power on UHF. Correct? Q: Even though the DB-408's, 420's, etc have duplex noise when each phasing harness junction is wiggled, is this a true test and is this normal? When the phasing harness is secured to the mast properly, it shouldn't be a problem? Thanks for all opinions, Derek KC4FWC 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/ 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/
