LTR Trunk Software & Determining Freq

[FLANO]

Hello All,

I've been using the LTR trunk software lately on a multi-net system here and it picks up the frequencies associated just nicely.

Today, I began playing around with a regular LTR system. It is in the 900mhz band. While listening to 937.5625mhz, which I've determined is LCN 18 per my PRO-97, I watched as a a TG came up on the system. I also determined that 937.6125mhz is LCN 16.

At the time, a total of 4 frequencies displayed, but not as a frequency. It displayed 0x00e, 0x010, 0x012, and 0x014.

I've determined that the 0x010 slot is frequency 937.6125 and the 0x012 slot is frequency 937.5625. I've edit the system text file to reflect these frequencies.

I thought that it might pick-up the frequencies that I inputted and would ID the other channels for me. It didn't. So, my question is, is there a way for me to tell the software to auto-detect/determine the other frequencies?

Is there a way for me to manually figure this out with the software, or do I have to go back to the PRO-97 sitting on the frequency and waiting for a channel ID to display?

Also, other than watching the TG activity to see which home channel it belongs to, is there any way for the software to dictate the LCN channel number?

I am used to using Unitrunker, but since it has no capability to do LTR, I'm trying to use my Unitrunker experience to help out here with this LTR experience

Thanks,

 

[cg]

LTRTrunk does nothing automatically in regard to frequencies such as ID'ing unknown freqs. You can get an idea of the number of LCN's but not the actual frequency. A plain LTR system does not transmit the same type of info as Multinet does in the data stream.

chris

To match the LCN on the 97 from what you have on the screen on LTRTrunk, use the Windows calculator on scientific. On the top left, just under the display line, click on HEX. Type in the number you have without the 0x and leading 0s. (0x010 gets entered as 10) Then click on the DEC spot next to HEX. This shows the result of 16 which is the LCN.

 

[FLANO]

LTRTrunk does nothing automatically in regard to frequencies such as ID'ing unknown freqs. You can get an idea of the number of LCN's but not the actual frequency. A plain LTR system does not transmit the same type of info as Multinet does in the data stream.

chris

To match the LCN on the 97 from what you have on the screen on LTRTrunk, use the Windows calculator on scientific. On the top left, just under the display line, click on HEX. Type in the number you have without the 0x and leading 0s. (0x010 gets entered as 10) Then click on the DEC spot next to HEX. This shows the result of 16 which is the LCN.

Thank You Chris,

That was helpful. It reaffirmed what I learned by using my PRO-97. I had ID'd 4 channels, 14, 16, 18, and 20. It corresponds very nicely with the software

 

[DaveNF2G]

Think of LTR-Regular as EDACS without the control channel. In other words, LTR-Regular is based on LCN ordering, similar to EDACS, but the LCN identification comes from data bursts sent by each repeater instead of a steady control signal sent over a single channel.

 

[FLANO]

Thanks Dave