Re: [Repeater-Builder] Tait T800 manual and software
From: Larry To: Repeater-Builder@yahoogroups.com Sent: Sun, 9 May, 2010 4:51:50 PM Subject: Re:[Repeater-Builder] Tait T800 manual and software May have stated that wrong The manual is the "Tait T800 Programming User's guide" Larry wrote: Is there anyone on the list that would like an original Tait T800 manual >with the PGM800 software? (on 5-1/4 floppy) > >I have one and just about to send it on it's way to the local incinerator. > >I might be able to transfer software off to 3.5 floppy if someone needs it. > >Email if interested otherwise it's a goner. > >Larry - N7FM > > > > > > > >tait700 wrote: > >Hi, >> >>Was wondering if anyone had any knowledge or experience of any bugs when >>burning a new Eprom for one of the above units ? >> >>I can compose the new .Bin file correctly using PGM800 Win ( i think ) and >>send it to the Eprom burner that is telling me when it is finished that it is >>copied correctly to the chip ( via Verify ) but when the chip is installed on >>the eprom board and fitted to the tx module i have no VCO lock = no transmit. >> >>I have tried adjusting the VCO trimmer but cannot get it to lock with the new >>chip installed. I have added one other frequency to the original one that was >>on the original chip ( up exactly 10 mhz ) but it will not lock with either >>the original Channel freq or the new one on the new chip. >> >>The original Chip worked fine with the one that was on there and comparing >>the .bin file from this and the new one both look the same when opened with >>PGM800. >> >>I have read the previous posts on this board about creating a new eprom but >>if i have done something wrong i cannot see what it is. >> >>Any info or advice would be much appreciated, >> >>Unit in question is a T881 850 - 930 mhz >> >>Regards, >> >> >> >>gday,id like a copy if ok .regards l
[Repeater-Builder] Re:Maxtrac Channel Control
On Thu Mar 25, 2010 11:04 pm (PDT) "kd8biw" kd8...@hotmail.com wrote: >Wondering if anyone has been able to implement a Motorola Maxtrac as a >"frequency agile" remote base on a repeater. What I would like to do is have >a 16 channel VHF mobile hooked to our repeater, and be able to select a >channel at will. I'm sure it can be done, i'm just overlooking something >here. Our controller has a 4 pin hex output that I think could do the >necessary stuff to make it work, just not sure about how it needs hooked to >the radio. Has anyone done something similiar to this? I was looking at >NO6B's RBI, and that would fit the bill, just wondering if I could make it >work with our controller (MCC RC-100) or would I have to get a different >controller (CAT or LinkCom)? Thanks all! It depends on what board and software version your Maxtrac has in it. M used the Maxtrac name for a number of different radios in different markets. If it has a 16-pin accessory connector (trunked Maxtracs only had a 5 pin accessory connector) then check the RSS to see if you can assign the pins functions. On the 2 layer logic board you couldn't, but on radios with the 4- layer logic board you could. Several of the lines can be used for channel steering. From memory the format was BCD, rather than straight hex, but my recollection could be faulty - it's been >10 years since I've looked at one. Check out the batlabs web site - you'll find lots of info there that may be helpful. Rodney. -- === Rodney Baker VK5ZTV rodney.ba...@iinet.net.au ===
[Repeater-Builder] Re: GM300 repeater build ?2
--- In Repeater-Builder@yahoogroups.com, "kb3ccn" wrote: > > I just got my cat-200 controller programed up and i notice some oddities with > my tx audio. > > I have a large fan that runs in the cabinet and the radios pick up the noise. > Also , when i am transmitting into the repeater , i can tap on the speakers > for both the tx and rx radio and you can hear the tapping on the output of > the repeater . Best described as the speaker is acting like a microphone and > that how the fan noise is getting in > > Any suggestions ?? > Maybe disable the speaker from the jumpers between pin 15 and 16 ? > Sounds more like one or both of the radios have a microphonic VCO. If you're *really* confident with hot-air rework of surface mount stuff you can try fixing it yourself by very carefully reflowing the solder in the VCO section without dislodging or overheating any components. I can't remember exactly if the GM300 has clip-on or soldered VCO shields (it's been around 7 years since I was last in a Motorola service shop). If they're soldered you'll have to remove the shields first and then resolder them afterwards (without damaging, dislodging or overheating any components under or around the shields). Alternatively, send them to your local Motorola service shop for repairs. Cheers, Rodney. -- === Rodney Baker VK5ZTV rodney.ba...@iinet.net.au === Alternatively
[Repeater-Builder] Re: repeater to DSL
--- In Repeater-Builder@yahoogroups.com, "Maire-Radios" wrote: > > any one got any thoughts on how to tie 2 repeaters together on a DLS line. > > Both repeaters at this time are 12.5 set up in the business band. They will > be Kenwood TKR-840 units. > > any help or links to info would be great. > > thanks john > http://www.omnitronics.com.au/RadiooverIP.html These units work very well - they will regenerate CTCSS and DTMF signalling and will pass Motorola TRC tones absolutely fine (I know from experience). Not all that cheap but when properly setup they are very reliable. Omnitronics are also responsive with tech support. Disclaimer: I have no association with Omnitronics, other than being a satisfied customer. Regards, === Rodney Baker VK5ZTV rodney.ba...@iinet.net.au ===
[Repeater-Builder] Re: how to wire a GM338 as a link on a TKR-750
On Feb 18th "predahunt01" predahun...@yahoo.com wrote: >Im currently working on a TKR-750, and need to wire a GM338 as a > link,audio from the TKR-750 to GM338 is not working im using a simple > controller for it can anyone give me some advice T_T Take it step by step. Using an oscilloscope (or even just a simple audio amp) answer the following questions: 1. Is there audio at the output of the TKR-750? 2. Is there audio at the input of the repeater controller (eliminate a cable fault here)? 3. Is there audio at the output of the repeater controller? 4. Is there audio at the accessory connector on the 338? What level? Are you feeding mic levels to a line-level input or vice versa? 5. Is the GM338 ptt activating via the accessory connector from the repeater controller? 6. Double-check the accessory connector pin assignments (as set in the RSS) and wiring (make sure you're actually connected to the pins you intended. 7. Make sure that any jumpers in the repeater controller and/or GM338 are set correctly. Hope this helps. Apologies if it is too basic - I always find it helpful to go back to first principles when something doesn't work as I expect; sometimes it is easy to overlook the obvious in the search for something more obscure. Regards, -- ======= Rodney Baker VK5ZTV rodney.ba...@iinet.net.au === signature.asc Description: This is a digitally signed message part.
[Repeater-Builder] Re: The utimate PIM test site discovered in Brussels…
On Tuesday 27 January 2009 21:48:19 "on7wp" pedro.w...@telenet.be wrote: > The utimate PIM test site discovered in Brussels… > > Part two of my quest… by Pedro M.J. Wyns ON7WP AA9HX > [...] > > A VHF NBFM repeater station into a half wave collinear (Big disaster) > [...] > > The problem: > > All works fine but the VHF repeater. We start by disabling the > transmitter, as the problems are purely receive related. > > Tracking down the problem: > > [...] > So apparently the noise and mixing products are generated OUTSIDE the > DAB transmitter system. > > Then we went to the roof with a Yaesu FT817 on the VHF RX frequency > using the same filter setup. A three element antenna is used for > pinpointing the problem. Noise is coming from multiple sources… > > A very large airconditioner air outlet (6x8 meter) on a lower roof 50 > m from the tower, maximum (S9) INSIDE the very large cover > > Metal shieldings around the building. > > The lightning protection connection (S6) on the major coax cables, > small airco outdoor units (S8) straight under the tower, the mount of > the VHF antenna (S7), the DAB antenna (S8)… > > Levels are off course not absolute but it is very clear that multiple > objects are radiating in this very strong field. I have no indication > of the actual radiation value but the lowest FM antenna is only 10 > meters above the walking area. DAB is at 20m, DVB-T at 25m. > > The next step ??? > Pedro, In my experience (and that of others from whose previous mistakes I've learned) collinear antennas on high-rf sites are a recipe for disaster; if not when first installed then certainly down the track. Most collinear antennas have joints inside between elements that change properties with age, vibration and temperature cycling and probably contain dissimilar metals (so any moisture/condensation inside the radome will encourage electrolytic corrosion). My recommendations would be as follows: 1. Replace the collinear with a dipole or dipole array (if you need gain) that is of fully welded construction. Anodised aluminium is OK if you're away from corrosive atmospheres but if you want absolute longest life go for one that is all stainless steel construction. Use appropriate mounting hardware (beware using different grade s/s to that of the antenna - it will corrode like crazy). 2. If you are able to, with the cooperation of the site and building owner(s), see if you can clean/refix/bond all metallic junctions that appear to be radiating (or as many as you are physically able to). For antenna mounts, remove, clean all surfaces and apply conductive grease on all mating surfaces. Some may call this overkill but I don't think so on this type of site. It should be a regular part of site maintenance to inspect and maintain all mounting hardware, connectors, lightning suppressors/earth connections etc. 3. You may not be able to do anything about the air-conditioning housings but try anyway. Make sure the housings are bonded to earth (check your local electrical/building codes/regulations before doing anything and employ suitably qualified contractors as required). > I would like to try other VHF RX antennas as I have the idea that > maybe the biggest IMD is made inside my own repeater antenna (Brand > new Procom ½ wave radialless). I think you're right. As a rule of thumb we only every used collinear-type antennas on sites with a single repeater or base station. Any time there was more than 1 TX or a likelihood of high RF from nearby sites we used either a single dipole (if gain was not required) or a fully welded metal dipole array (e.g. those manufactured by RFS or RF Industries). > The UHF antenna is not bothered by this noise, nothing is observed and > it is located at the same height and distance from the FM panel > antennas > > Please your input if you have any idea how to handle this case, and > hopefully solve it… > > Pedro ON7WP-AA9HX Good luck. I hope this is of some help to you. Regards, Rodney. -- === Rodney Baker VK5ZTV rodney.ba...@iinet.net.au === signature.asc Description: This is a digitally signed message part.
Re: [Repeater-Builder] Radio Over Internet Protocol (ROIP) Interface
On Wed, 1 Oct 2008 12:21:41 Repeater-Builder@yahoogroups.com wrote: > Re: Radio Over Internet Protocol (ROIP) Interface > Posted by: "Nate Duehr" [EMAIL PROTECTED] wy0x > Tue Sep 30, 2008 4:46 pm (PDT) > > Rodney Baker wrote: > > Have a look at http://www.omnitronics.com.au/RadiooverIP.html > > > > I've used these and they work well. > > What price range are they in, generally? > > Nate WY0X I believe that they were around AUD$2000 per pair for the IPR100. This unit does a number of different PCM compression modes from 8 to 64kbps and regenerates DTMF and PL (CTCSS) tones at the remote end. They can use E&M or voice activity detection or just constant streaming. In my application I used them to remotely connect a marine VHF radio to a Centracom dispatch console via an ITA2000 tone remote adaptor. I was a bit concerned that there may have been a problem with them passing the Motorola TRC tones but that part works perfectly with reliable keying every time. I still have to set up the RX audio levels properly though (which just requires some time...). I figure if they work for the TRC stuff they may also work in a Spectra-Tac or similar voting system. The only thing you'd have to watch in this case is that network latency is kept low with minimal jitter. I wouldn't recommend trying this over a DSL link for example, but on a dedicated network it should work fine. They also support QoS tagging of the IP traffic. BTW, I'm not connected with Omnitronics in any way - just a satisfied customer. Regards, -- === Rodney Baker VK5ZTV [EMAIL PROTECTED] === "You'll never be the man your mother was!" signature.asc Description: This is a digitally signed message part.
Re: [Repeater-Builder] Radio Over Internet Protocol (ROIP) Interface
On Mon, 29 Sep 2008 20:18:08 Repeater-Builder@yahoogroups.com wrote: > 6. > Radio Over Internet Protocol (ROIP) Interface > Posted by: "paul czarwin" [EMAIL PROTECTED] tisoy_608 > Sun Sep 28, 2008 7:13 am (PDT) > I'm looking for diagram of Radio Over Internet Protocol (ROIP) > Interface to use by our group in linking our local & overseas members > through this method. > > > Back to top > Reply to sender | Reply to group | Reply via web post > Messages in this topic (1) Have a look at http://www.omnitronics.com.au/RadiooverIP.html I've used these and they work well. Regards, -- === Rodney Baker VK5ZTV [EMAIL PROTECTED] === ... Our second completely true news item was sent to me by Mr. H. Boyce Connell Jr. of Atlanta, Ga., where he is involved in a law firm. One thing I like about the South is, folks there care about tradition. If somebody gets handed a name like "H. Boyce," he hangs on to it, puts it on his legal stationery, even passes it to his son, rather than do what a lesser person would do, such as get it changed or kill himself. -- Dave Barry, "This Column is Nothing but the Truth!" signature.asc Description: This is a digitally signed message part.
[Repeater-Builder] Re: De-Sense and Circulator Question
On Tue, Aug 19, 2008 at 1:08 PM, John Transue <[EMAIL PROTECTED]> wrote: > Members of Repeater Builder have been very helpful in my effort to improve > the operation of a 440 repeater. The de-sense problem is reduced now by the > addition of another cavity, a band pass cavity on the receive leg. Now I am > wondering whether a circulator would provide additional isolation and > further decrease the de-sense problem. Your advice would be much > appreciated. > Circulators are mainly used as part of a TX multicoupling system where multiple transmitters are combined to feed into a single antenna. They are used to prevent the output from individual transmitters feeding back into other transmitters on the same multicoupler. They are non-linear devices and as such are always followed by a band-pass cavity (or cavities) to keep the transmitted signal clean. They may sometimes be of use where other nearby transmitters that are close in frequency to yours (close enough and strong enough to get through your duplexer band-pass filter) are mixing in the PA stage of your transmitter to produce intermods. They will have no effect on desense and will add another 1db or so insertion loss. The best way to reduce desense in my experience is to use cavities that have both band-pass and notch capabilties (I think TX/RX Systems call them "Vari-notch" cavities). You tune the notch on the receive cavity to the TX frequency and the notch on the TX cavity to the RX frequency. This only works where you have reasonable separation between TX and RX e.g. at UHF. It is not practical with less than a couple of MHz separation (IMHO). > I have no idea where to get a circulator or what to expect it to cost. If > you think a circulator would help, perhaps you can suggest sources and > prices. > Honesly, in your situation I wouldn't bother (but that is just my opinion). Regards, -- === Rodney Baker VK5ZTV [EMAIL PROTECTED] === If someone had told me I would be Pope one day, I would have studied harder. -- Pope John Paul I signature.asc Description: This is a digitally signed message part.
[Repeater-Builder] Re:GR300 Repeater Housing - Fan Replacement
"Tony L." [EMAIL PROTECTED] wrote: >Has anyone here ever replaced a fan in a GR300 repeater housing? If >so, how tough of a job is it, and is the fan stock? Easy. 4 screws (2 in each side) hold the back of the cabinet in. The fan is mounted to this. It can be a bit painful to slide out and get back in but it isn't too difficult. There is a temperature sense clip screwed to the heatsink of the transmitter that is supposed to control the fan speed. IMHO this isn't needed and your replacement fan probably won't have it. The only reason to reduce the fan speed is for noise reduction if it is used as a "desktop" repeater. Don't bother trying to order the fan from 'M' - just get a generic computer-style 12v fan of the same size (it is a standard size). For longevity use a ball-bearing fan - a bit more expensive but still cheaper than an overheated TX PA due to fan failure. BTW, when reinstalling the rear cover be sure to a) make sure that all interconnect cables are sitting neatly and not fouling the fan, and b) get all the screws lined up and started before tightening any of them. Oh, yes. The rear cover has a second set of mounting holes that can be used to mount it slightly protruding from the rear of the cabinet to provide more clearance if required. Hope this helps. -- Rodney Baker <[EMAIL PROTECTED]>
Re: [Repeater-Builder] Re: Radius M120
On Tue, 31 Jul 2007 10:14:10 "jwpauler" [EMAIL PROTECTED] wrote: > Jay, Ed & All... > > Thanks for the pinout list and RSS advice, I'll try all of that tonight. > > In case it matters... The RSS I'm using is for the GM300's, which > works great for those radios, I can program the option pins on the > accessory connector with this software; when connecting a M120 and > using the same software, I have the ability to program the radio, but > I loose the option to customize the pins! This doesn't make sense! > [...] > Justin The M120 has the 2-layer logic board whereas the GM300 has the 4-layer logic board. On the 2-layer board the functions of the accessory pins are not software-programmable. -- === Rodney S Baker VK5ZTV [EMAIL PROTECTED] ===
Re: [Repeater-Builder] Where to pickup fixed-audio on an MCS2000?
On Tuesday 13 March 2007, Repeater-Builder@yahoogroups.com wrote: > Where to pickup fixed-audio on an MCS2000? > Posted by: "Mike Lyon" [EMAIL PROTECTED] mlyonff > Mon Mar 12, 2007 4:42 pm (PST) > Anyone have any idea where I can pickup fixed audio after the squelch > output but before it makes it to the speaker amplifier? > > Thanks, > Mike The fixed audio (discriminator audio) output is available on one of the pins on the DB25 accessory connector on the underside of the radio chassis. I can't remember exactly which pin as it is a while since I've needed to touch one of these radios. The MCS2000 installation guide has the details. You should be able to get the info from your friendly local Motorola dealer if you don't have the installation guide (I had one but it is still in a box somewhere from when we recently moved house...). You'll also find the pin-out here: http://www.batlabs.com/gm900.html This chart shows pin 11 as Filtered Audio Out which is de-emphasised audio pre-volume control. If you want straight discriminator (flat) audio out then I think you can change the setting for this pin via the RSS. Pin 10 is the analog ground. -- ===== Rodney Baker VK5ZTV [EMAIL PROTECTED] =
[Repeater-Builder] Re: MOTOROLA MTX BUG ??
What sort of trunking system are you referring to? If you're talking about a Motorola SmartNet trunking system then there is normally no voice audio on the control channel (unless the system is specifically set up to use the control channel as a voice channel when no other channels are available). All that will usually be heard on the control channel is the 3600bd control channel data. If you're talking about an LTR trunking system then that is different, but I wasn't aware that Motorola made an MTX with LTR software. My recollection is also that the conventional channels that are used in the radio service mode are not the same as those generally allocated for trunking channels anyway. They're only intended for use on the service bench to align and test the radio. >From my experience (admittedly only 4 or 5 years) in specifying, building and configuring Motorola SmartNet and LTR trunking systems, you'd have to be pretty unlucky for the actual trunking system to use one of the channels used by the radios in service mode at all, let alone for a voice channel. Motorola are generally very security conscious and I would think they would be unlikely to let that one slip through. Still, if you're concerned discuss it with your local Motorola representative or dealer. If it is a genuine security risk then they will need to assist you in finding a suitable solution. Rodney. - Original Message - From: "Khaled Thekri" <[EMAIL PROTECTED]> To: "Radio radio" <[EMAIL PROTECTED]>; "Repeater Builder" Sent: Sunday, December 03, 2006 5:47 AM Subject: [Repeater-Builder] MOTOROLA MTX BUG ?? > Dear sir > > could anyone can help me ? i have a big problem in Motorola Mtx-b3 > > I HAD AUTHORIZED TO MANAGE THE WIRELESS NETWORK FOR GOVERMENTAL NETWORK FOR TWO WAY RADIO IN TRUNKING SYSTEM .. > > > > THE PROBLEM IF THE USER CLICK THREE CLICK'S ON THIRD SIDE BOTTONES THE RADIO ENTER INTO SERVICE MODE .. AND RECEIVED THE CONTROL CHANNELS FOR STATION ,THAT MEANS ANYONE CAN HAIRED ANY VIP'S TALKS IN STATION ??? > > THEREFOR > > HOW CAN I DISABLE THE THIRD SIDE BOTTONE OR DISABLE THAT FEATURES ON SYSTEM OR IN RADIO ?? > > > PLEASE CAN ANYONE HELP ME > > > > > REGARDS -- Rodney Baker VK5ZTV [EMAIL PROTECTED]
Re: [Repeater-Builder] Digest Number 3611
On Mon, 2006-02-13 at 18:51 +, Repeater-Builder@yahoogroups.com wrote: > Message: 14 >Date: Mon, 13 Feb 2006 01:17:03 -0800 (PST) >From: hm2006 robin <[EMAIL PROTECTED]> > Subject: MTR2000 repeaters Link > > > > I need advise about making link between 2 (MTR2000) > repeaters .?? and if in case to making link between the > VHF(MTR2000) and HF (Codan SR),what we must do ? > > Thanks > How far apart are your repeaters? Is there a land-line available between sites or do you need an RF link? If optioned correctly with the 4-wire wireline board then linking is easy using either method and tone-remote control over the link to control the remote repeater. Linking to the HF radio could be done in a similar way but you'd need an additional interface between the MTR2000 and the Codan HF radio. It would be helpful if you can give more information about what you're trying to achieve... Rodney. -- Rodney Baker <[EMAIL PROTECTED]> 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/
