I have searched for any posts regarding simulcast on a G5 and cannot locate anything on the subject. I know the unications handle simulcast quite well from what I hear. Question: The SDS100 will follow the strongest tower signal and switch to whatever tower is stronger. Can the G5 follow and latch on to the strongest signal tower? How to program for a simulcast system?
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SIMULCAST
- Thread starter W0RS
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I have searched for any posts regarding simulcast on a G5 and cannot locate anything on the subject. I know the unications handle simulcast quite well from what I hear. Question: The SDS100 will follow the strongest tower signal and switch to whatever tower is stronger. Can the G5 follow and latch on to the strongest signal tower? How to program for a simulcast system?
In simulcast they are all on the same frequency. How can it 'change towers'? Did you read that somewhere?
If a site is simulcast, it would likely have no issues picking it up as the signal can come from a variety of directions.
If you program multiple sites on a system to a single knob position on the Unication, it will pick the strongest one and stick to it until it’s lost and attempts to find the new strongest signal for the system on that knob position.
If you program multiple sites on a system to a single knob position on the Unication, it will pick the strongest one and stick to it until it’s lost and attempts to find the new strongest signal for the system on that knob position.
N6ML
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I'm not sure you understand how Linear Simulcast Modulation works. All transmitters for a given channel in a simulcast "site" transmit on the same frequency, so there is no "switching over" as far as LSM goes. Gx pagers handle LSM very well, and will receive well so long as you're within range.
"Switching over" comes into play when there are multiple sites for a system, some or all of which may be LSM. The Gx pager firmware finds the best site when arriving on a system, and remains on that site until it detects a high enough error rate that it consider it out or range. Only then will it again look for the best site for the system (as you have it programmed)
"Switching over" comes into play when there are multiple sites for a system, some or all of which may be LSM. The Gx pager firmware finds the best site when arriving on a system, and remains on that site until it detects a high enough error rate that it consider it out or range. Only then will it again look for the best site for the system (as you have it programmed)
What they all said
jonwienke
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Handling multiple sites has nothing to do with simulcast. A simulcast site is a collection of two or more transmitters broadcasting identical signals on the same frequencies. There is no switching "to whichever tower is stronger" because every tower is broadcasting the same signal on the same frequency. The Uniden SDS and Unication G models are able to accurately parse bits from the multiple overlapping signals received, but most receivers are not. But they do so by digitizing the RF signal and running some complex math on the digitized data, not by switching frequencies or the transmitter being monitored. The algorithm doesn't isolate the signal from one transmitter, it uses all signals from all transmitters on the frequency to generate the audio bitstream.
The Unidens are better at actually switching sites quickly; they can do so in 1-2 seconds, while the Unications take closer to 10.
GTO_04
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Whether it is two sites or 500 sites, here is an example of how to program it. Large TRS - all control freqs Tab D2 P25 Trunking System Setting
Don't forget about full spectrum scan as a fallback.
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