Batboard

emtprt

I would check with your local radio shop to rent portables and a repeater for the event. Most larger shops have portable repeaters on their license with a cache of radios. The typically have a license that covers an entire state or multiple counties in their service area. The radio shop also hase th...

emtprt

Well our main transmit site has been down since July 5th (except for a few rare hours) 4 days ago the Telco found 1 good 4 wire pair out or 25 attempts and 12 service calls. My service ticket is still open and a continuous monitor was placed on the line to record problems. I brough the site back onl...

emtprt

The trouble team is sending out a senior tech. supervisor to resole the issue tommorrow. Minimal changes in dB loss 16.1-16.4 possible grounding issue creating A/C current through the line up to 10v

emtprt

What would be an acceptable telco circuit db loss for proper function of MTR2000s and the Spectra-Trac comparatot. Today we were sitting around -16dB when everything was checked at the site.

emtprt

The telco did send out a line crew last week to check pole grounding and jumper issues. I have refused to close out the service ticket due to the issues encountered. I was advised to bring the matter up with 2 State regulatory agencies. The guys they have sent out have been decent people and seem to...

emtprt

I am working with an IT person to have each site recorded and time stamped. I have communicated all the way to the third tier of support at the phone co. They respond quickly but the problem reappears within a day of service. The State of CT has been very critical of utilities since the last hurrica...

emtprt

We recently moved our comaparator to a firehouse in town instead of the dispatch center 15 miles away. Our systen consists of 2 receiver sites and 2 repeater sites ( a primary and a backup). The dispatch center has the ability to switch repeater sites via a DTMF code transmitted via a control statio...

emtprt

Thank you for the help. Prior to the firmware update it the ID was frequent around the clock. It sounds like it is working correctly and within FCC regulations for it's service.

emtprt

We are running an 800 conventional MSF5000 standalone repeater that was not producing any CWID. The squelch pots we adjusted and we now get an ID 5 sec post activation and then every 15 minutes for 1 hour. After the 1 hour the CWID won't trigger again until a field unit actives the repeater. TX RX C...

emtprt

I have a Motorcycle version Astro Spectra that was converted to an A7 Dashmount radio. I need to convert the radio back to a Motorcycle remote head radio. I know that I will need the control cable, Waterproof Mic and speaker. Do I need to change the Display/head I know the mic for the motorcycle kit...

emtprt

The issue ended up being a bad tone remote, not interference as initially diagnosed. F1 on console into control station worked fine but when channel changed to F2 only able to TX no RX into console.
Tone remote being replaced.
Thanks

emtprt

Comtelco was able to provide the antennas I needed. They will cut to order and are great to deal with.

emtprt

We recently added a control station as a dispatch backup in the event of the loss of phone circuits. The control station is connected to a 4 position Zetron console and has 2 channels programmed in it. We are using a 40watt UHF CDM1250 with a preselector and 9.2dB gain yagi antenna with 40' of 1/2&q...

emtprt

I am in the process of replacing 4 antennas at our town's EOC. Currently there are 5 Diamond model X50A antennas for use with UHF and VHF mobile radios used as control stations. The specs for the present antennas look to be geared for 144 and 440 bands. The public safety frequencies that I need to c...

emtprt

We have had numerous power outages recently downed trees/hanging branches over the past few months due to hurricanes and a rare fall snow storm. The last incident occured at night on a unit that responds to over 2000 alarms a year. The height of the box clears the garge opening by 11" and 7.5 i...

emtprt

I am considering replacing 2 UHF antennas with the above antennas. They will be placed on the roof of an ambulance after multiple clearance issues and damage to the vehicles roof. I have tried the 3.5" Laird phantom antennas which have performed well but keep taking hits. Quarter-waves are long...

emtprt

Back from Shop; oscillator was off spec. and a minor tune up works great!

emtprt

I sent the radio to the dealer hopefully isssue will be resolved. thanks for all the input
Mark

emtprt

No 2 DPLS 026/343. We are chaning more channels over to narrowband and I hope the list does not grow. I did have an MDC1200 issue with ID 2023 with a few CDM1250s while back.

emtprt

The XTS3000 scan issue is still unsolved. I am able to monitor the channel with the when scan is off but when scan is on the channel goes silent. The scan function works correctly if the DPL is set as a CSQ. I have changed the scan switch option from top 2 position switch to A-B-C witout a change. I...

emtprt

The DSP 8.03.02 Host 7.23 codeplug 000C. All of the other radios are HT1000/MTS2000/HT1250 and are programmed the same. There are no issues with the other radios and the 2 narrowband conv. channels with DPLs. Both Channels involved are around 460.00

emtprt

Sorry all conv. channels in the radio; there are 2 narrowband channels in the scan bank with DPLs that work fine when selected as the TX channel but will not received when another channel is the selected talk channel and scan is on. Narrowband channels with ctcss work fine in sccan mode. The problem...

emtprt

We have an XTS3000 UHF Model III H09RDH9PW7BN flashcode 500008-000000-1 that will not receive on 12.5Khz UHF channels that have DPLs. The radio receives these channels fine when the channel is set as the selected channel. Programming info:Unmute selected as standard, RX emphasis standard and carrier...

emtprt

Radio powers up fine with antenna off. We replaced the coax in the original hole and covered it with protective covering this time . The old coax looks like someeone took a utility knife to it. The radio is know working properly.

Thanks everyone

emtprt

The shielding(ground) pinched on the rollcage and headliner wearing into the center solid copper. The center copper of the RG58 has a positional direct short with the roll cage edge and sheilding . Thesite is where the door B post and roll cage meet. I believe the door slamming may have caused the c...

emtprt

I am grateful for the help and responses. I have tried all of the voltage readings as described. I may not have replied correctly and appologize. We re-wired directly to battery (voltage at the battery is > then 13v per mechanic) with stable voltage under loads and without aload at idle. A fix was f...

emtprt

The voltage at the battery with the engine running is 13.6-13.9 volts ( No load on the system; a/c off, lights off. accessories off). The Power was picked up from the under hood fuse block feed cable connection ( prior to the block). I ran a the feed power feed from the battery and the proplem still...

emtprt

The grounding strap appears to be in good shape. I had the original factory battery replaced and the alternator upgraded to a higher amp unit. Prior to the upgrade when the problem occurred the voltage at the radio ranged from 11.2v-12.8v depending on the load (lights, A/C, siren...). The voltage wh...

emtprt

We have a 2008 GMC 2500 P/U with a 45 watt UHF CDM1250 that recently has started to give a low battery beep when transmitting. The issue is new and I had the vehicles batttery replaced and a larger alternator installed. The truck has a 200 watt siren, multiple LED flashing lights and a light bar. th...

emtprt

We have 1 primary dispatch center telephone line dependant, 3 fire houses with CDM1250 control stations, 25 mobiles with 38 to 64 channels per radio and 75 portables with 16 to 74 channels per portable. Current channel setup 1 repeated 25khz primary dispatch/operations ( channel being converted to 1...

emtprt

We are re-banding our UHF radio system to 12.5khz and are working on a calendar for reprogramming the radios. Due to the number of radios the entire system cannot be completed in one day. Plan A is to program the portables and mobiles first then rep-rogram the bases/receivers. We realize there will ...

emtprt

Will give it a shot

Thanks

emtprt

The new repeater needs an omni-directional antenna for wide area coverage and has a 4 cavity pass-reject duplexer. This will be the only transmitter for the system. The repeater that is already at the site has a sector antenna that covers a specific area of town and has gps timing with a comparitor ...

emtprt

We are in the process of adding a 150 watt analog 858.xxxx repeater with a 5dBi omni antenna to our radio system on an 85 foot tower. The 85 foot Rohn tower currently has 3 UHF antennas and a VHF antenna. The problem we are trying to avoid is interference with the 100 watt analog 852.xxxx repeater a...

emtprt

I have been dealing with close coverage issues and weighed a number of options. I have decided to replace a higher gain antenna with a lower gain Telewave dipole which has a downward tilt option. In order to achieve my needed ERP I will need to replace the current repeater or add an amplifier and ne...

emtprt

I am far from a radio tech. but your output will be reduced when using a duplexer. I have 3 40 watt r1225 repeaters and the transmit power set at 40 watts with swr less then 1 they put out 25-28 watts using a dulpexer. The duplexers are rated at 50 watts and you can often increase the power on your ...

emtprt

I just received a flyer from a vendor with some realistic 19" UPS and Power supply costs. This will take a good size dent from the oringial quote using a CDM1250. I was also given the name a a company the produces 19" rackmounts for the CDM Radio. Things are looking better for this project.

emtprt

The current console setup has 4 positions; each position has a UPS and the computers and phone systems have seperate a UPS systems. The entire building has generator power (multiple units). The building that the center is located houses numerous agencies that require power in the event of a failure.

emtprt

One channel is 12.5KHz the channel has hadpaperwork submitted for the conversion. Our system is currently using CDM1250 radios for mobiles and HT 1000/750/1250/MT2000 and MTS2000 portables. The primary frequency has MTR2000 repeaters voted with 2 receivers and the low use channels (already 12.5) use...

emtprt

Original plan was to purchase a CDM1250 with power supply, UPS, Rack Mount, pre-selector. I was hoping using the r1225 would eliminating the purchase of everything except for the ups. I am trying to work within a budget that won't cover the project. Unfortunately with the narrowanding I have a numbe...

emtprt

Thanks for the input, I have a very limited budget and need to build a functional back up for our volunteer fire/ EMS/Hazmat agency.

emtprt

I am in the process of adding a control station and have a tight budget. I have a gr1225 UHF repeater that I would like to conevert to a simplex base for use as a control station a for 2 channels. The TX would be Channel 1 459.0/RX454.0 Channel 2 Tx 458.05/RX453.05. This unit would be intergrated in...

emtprt

My price quote for CDM1250 control station with receiver preselector in CDR500 housing, 19" panel mount, tone remote adapter for CMED. 2700.00 Battery reverting charger with cables and 2 AGM 12vdc batteries and boxes w/lidson Rack shelf for batteries 2300.00 Install, polyphaser, jumpes 1100.00 ...

emtprt

I have a Tessco account and will check out the items that you suggested. The CDM mounting rack is basically being used instead of a sheltf to keep the rack clean. I am not able to do the connections or install at the site due site contracts, the console warrenty and liability issues. A Motorola deal...

emtprt

The control station will have 2 channels programmed and our fear is the radio might revert to the wrong channel if there was a power interuption. When we first strarted using the CDM radios we did not have the ignition sense installed. When a vehicle was started the radios would end up doing some st...

emtprt

We are adding a UHF 40 watt control station in the penthouse of a regional dispatch center. The control station will be a backup for the main system if there is a phone line failure but will primarily be used monitor a seldom utilized administrative channel. The 19" rack is already present and ...

emtprt

I am using a 3.8 gain omni dipole Andrew DB404 planning on replacing the present repeaters ( 3 at 3 locations) with an MTR3000 100watt (trying to get funding).

emtprt

Current Tower Rohn 85 foot my antenna is 60 feet on an 8 foot side arm. The Tower is 1.25 miles from the north hill decline and .25-.35 miles from the west declin of the hill. Any antenna at the mergre of the rivers is basically 3/4 open area that is walled by hills.with an exception of the WNW whic...

emtprt

The main systems has 2 transmit and 4 rx sites this is a secondary system that we are improving on slowly. Repeater replacement is in the planned budget (MTR3000 to replace 1225 repeaters) but could be cut.That is why I am exploring all of the options. Repeater replacement would give us increased tx...

emtprt

Bill I have been using the software you shared with me and ploted using a low gain antenna with more power which seems the way to go. II really need feed back on the downward tilit option. I only know of one area town using downward tilt and they had good results with a ite 3/4 of a mile North of mi...

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