[Repeater-Builder] request for info on Sinadder Model CML-1
Hi, could anyone give me some information on what the C MSG feature is for on a Sinadder Model CML-1. There is an on off switch on the front panel for this but I don't know what it is for. Also, if anyone has a file for this particular Sinadder I would sure appreciate obtaining a copy. I think it is basically a Sinadder 3 but am not sure of any differences in it. 73, Bruce, VE1II
[Repeater-Builder] Re: information requested re broadband internet canopy equipment interference
Hi Rodney and others. The CAT5 cables are definitely shielded and I suspect that they are properly terminated. There are 10 CAT5 cables in total and an LMR200 cable. I suspect the LMR200 goes to a GPS unit which is on the tower. Six of the CAT5's go to the six panels and likely the other four are used on dishes on the tower that pick up and relay the signals coming to the tower. The VHF repeater is using a Sinclair 210-C4 on the top of the tower with the panels mounted just below that (approx. 10 feet down) The repeater is multicoupled to the 210-C4. All feedlines for VHF and UHF antennas is hardline. The power supplies for the panels are switching type. The noise is across the VHF band. Thanks for the comments so far. > > Has the Canopy system been installed using shielded cat5/cat6 cable? The EMI > certification is only applicable if shielded cables are used (and properly > terminated). > > What sort of antenna is your system using? How much vertical/horizontal > separation from the Canopy system? Above or below? > > Does the Canopy have one or two cables running to each panel? If one, the > power, sync and data is carried on the same cable. If shielded cable has been > correctly used, the cable radiation should be minimal (provided good quality > cable with 100% shield coverage is used). > > If there are 2 cables, the sync signal crom the Cluster Management Module > (CMM) is on a separate cable. If that cable is not shielded, it could be > radiating. > > Rodney. > > = > Rodney Baker VK5ZTV > rodney.ba...@... > = >
[Repeater-Builder] Re: information requested re broadband internet canopy equipment interference
5 gigs When testing, when none of the six panels were powered there was no noise. When only one panel was turned on the noise was not very strong but as each of the others were turned on the noise increased. One of the panels seemed to cause more than the others. Bruce, ve1ii --- In Repeater-Builder@yahoogroups.com, "Andrew Seybold" wrote: > > Is the Canopy system operating in 900 MHz or 2.5 or 5 Gigs? It makes a > difference when chasing interference and Motorola has deployed Canopy on > all of the above unlicensed frequencies as well as some others. > > > > W6AMS > > > > From: Repeater-Builder@yahoogroups.com > [mailto:repeater-buil...@yahoogroups.com] On Behalf Of ve1ii > Sent: Sunday, August 30, 2009 6:28 PM > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] information requested re broadband internet > canopy equipment interference > > > > > > Hi, > > I would like to hear of any details regarding interference caused to VHF > repeaters sharing the same site with broadband internet Canopy > equipment. > I have a repeater which is experiencing a frying like noise on received > signals being transmitted by the VHF repeater. > As the VHF received signal becomes weaker, the noise appears to > increase. Prior to the internet canopy being turned on there was no such > noise. > Any info, especially methods used to eliminate the noise would be very > much appreciated. > Any references to material on this problem would be especially useful > also. > > Thanks, > > Bruce, ve1ii >
[Repeater-Builder] information requested re broadband internet canopy equipment interference
Hi, I would like to hear of any details regarding interference caused to VHF repeaters sharing the same site with broadband internet Canopy equipment. I have a repeater which is experiencing a frying like noise on received signals being transmitted by the VHF repeater. As the VHF received signal becomes weaker, the noise appears to increase. Prior to the internet canopy being turned on there was no such noise. Any info, especially methods used to eliminate the noise would be very much appreciated. Any references to material on this problem would be especially useful also. Thanks, Bruce, ve1ii
[Repeater-Builder] Re: MICOR _base, audio squelch module VS mobile, audio squelch module
Thanks for your reply Kevin, I wasn't sure if the mobile module still had advantages over the base station one after each is modified according to your notes. 73, Bruce, ve1ii > > When using an RC-210 controller, there is no difference in performance > between the two. The only difference would be locally when listening to > the speaker audio; where the mobile board provides better muting. > However, full muting can be gotten by re-wiring the station board to > take advantage of two muting switches. So, basically there is no > difference between the two boards if both are modified to work the same. > > I'd use the station board and do the mods here: > http://www.repeater-builder.com/rbtip/station-a-s.html > > Better audio muting from the local speaker and quality COS signaling for > the RC-210 will result in using the above mod, and it's easier to do > over the mobile unit. > > Kevin >
[Repeater-Builder] MICOR _base, audio squelch module VS mobile, audio squelch module
I am making the various modifications to a VHF MICOR repeater to be used as a 2 Meter repeater. Assuming that a base station audio squelch module has been modified per Kevin's notes and also a mobile audio squelch module has been modified according to his relative notes, how do they compare in performance? i.e. Is one preferred over the other. The controller will be an RC-210. Thank you for any comments.
[Repeater-Builder] question for Mike, WA6ILQ
did you get the Mitrek 12F pics ok? Bruce, ve1ii 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] need input on changing Mitrek oscillator crystal
I have read a few comments in the past about the need for changing the crystal from one side of the operating frequency to the other in a Mitrek. I am not sure I will be wording this properly so please be patient. I will have two repeaters at the same site which are Mitrek conversions. One repeater is on 145.210 MHz (neg. offset) and the other repeater is on 147.240 (pos. offset). At present the 145.210 repeater is not a Mitrek but when I am finished the conversion it will be replaced by the second Mitrek. I would appreciate comments re experiences (ie problems) encountered if both receivers have the same frequency crystal. thanks Bruce, VE1II 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] Western Radio WR-155
If anyone has experience with or info on the WR-155 VHF transceiver please email me directly. Just a few questions to find answers for. Sorry for being a bit off topic. :-) I would not want to interrupt the educational topic of the week! bruce, ve1ii 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/
