Power i.e. Analog vs. Digital

[Chris0516]

I have the UBCD325p2, and use Proscan to program it.

My curiosity is, since I locked all the Analog systems. The Digital systems are coming through great. But, If I unlock the Analog systems, the Digital systems barely come through. Is there some technology that seemingly makes Analog signals overpower Digital signals?

 

[doctordialtone]

No.

I would double check your delay times and hold times in programming.

Best to set them on 0 or 1 second until you figure out why this is happening.

 

[wtp]

what do you mean 'unlock' ?

 

[Chris0516]

No.

I would double check your delay times and hold times in programming.

Best to set them on 0 or 1 second until you figure out why this is happening.

I did. I changed all the Hold and Delay times to '0'. Things are better since I did that.

what do you mean 'unlock' ?

In Proscan, you can select a system to be 'Locked'. The system is 'unlocked' by un-checking the 'Locked' box.

 

[n1chu]

It seems your question has to do with the “rate” of scanning… and how “lock-ing out” or “avoiding” ANY system affects this rate.

Since you say the issue has improved since you reduced the “delay” times (where the scanner waits for a certain amount of time) on a particular frequency (or TG) after a transmission has dropped, which allows the scanner to resume scanning quicker than your previous higher delay times did, you should experience quicker resumption of scanning.

I would venture to guess some of the analog stuff you listen to is very busy. And will cause your scanner to slow down its scanning rate of other systems, both digital and analog.

Without confusing the issue further, it’s paramount that we remember the old adage that scanning is less! We may think we should be hearing more but the more we have the less we hear as it applies to any one system. That’s because our scanner is missing other systems activity when it is stopped on a busy channel.

When I first read your post I would have thought it was the other way around, where the digital systems were causing the slow down, not the analog… as those digital systems are most likely trunked systems, with many TG’s which increases the amount of time the scanner needs to look at before it starts scanning again.

 

[900mhz]

The other thing that needs mentioning is that scanning a combination of conventional, whether it be analog or digital and trunking will slow things down. Locking on a control channel is not an instantaneous thing. It is possible that the trunking system, or systems if you scan multiple ones may skip right over it due to slow control channel recognition.

 

[nessnet]

...... with many TG’s which increases the amount of time the scanner needs to look at before it starts scanning again.

Not exactly correct.

Conventional:
The radio scans each individual frequency.

Trunking:
The radio scan each SITE. It doesn't matter how many talk groups there are. It depends on how many SITES you are scanning. It 'listens' for channel assignments on each, then moves to the next if no activity.

 

[wtp]

and with trunking there is a 2 second 'housekeeping' for each site.

 

[Chris0516]

It seems your question has to do with the “rate” of scanning… and how “lock-ing out” or “avoiding” ANY system affects this rate.

Since you say the issue has improved since you reduced the “delay” times (where the scanner waits for a certain amount of time) on a particular frequency (or TG) after a transmission has dropped, which allows the scanner to resume scanning quicker than your previous higher delay times did, you should experience quicker resumption of scanning.

I would venture to guess some of the analog stuff you listen to is very busy. And will cause your scanner to slow down its scanning rate of other systems, both digital and analog.

Without confusing the issue further, it’s paramount that we remember the old adage that scanning is less! We may think we should be hearing more but the more we have the less we hear as it applies to any one system. That’s because our scanner is missing other systems activity when it is stopped on a busy channel.

When I first read your post I would have thought it was the other way around, where the digital systems were causing the slow down, not the analog… as those digital systems are most likely trunked systems, with many TG’s which increases the amount of time the scanner needs to look at before it starts scanning again.

I think you are right about the analog stuff being 'busy'. I have nine counties(1 home n' 8 bordering), eight international airports(I can sometimes get an airport 150mi. away) n' two TRACONs'. The busiest of all the analog traffic is the county 911 systems. Even if a county/system i.e. Cary/Wake25, Durham/Fayetteville; is primarily digital.

The other thing that needs mentioning is that scanning a combination of conventional, whether it be analog or digital and trunking will slow things down. Locking on a control channel is not an instantaneous thing. It is possible that the trunking system, or systems if you scan multiple ones may skip right over it due to slow control channel recognition.

Good point.

 

[wtp]

you do know it is time for more radios....right ?

 

[Chris0516]

you do know it is time for more radios....right ?

Nah. I have the BCD325p2. Even though it is not advertised with simulcast capability, and comparing it to the SDS100 n' BCD436HP, I still like it a lot. I actually looked at the 436HP. Before I got the 325p2. Then at the SDS100 when that came out. Still prefer my BCD325p2.

 

[Chris0516]

you do know it is time for more radios....right ?

I missed my chance, to edit my previous reply.

One of the main problems I found, with both, the SDS100, and the BCD436HP. Was the screen being hard to see in the dark. I am a ''nightcrawler'. So, I am usually in the dark.

Also, The BCD325p2 is a 'short vertical' rectangle. The 436HP is a 'long vertical' rectangle. The SDS100 is also a 'short vertical' rectangle. To use building construction as an analogy. Small(2-3 stories) buildings(BCD325p2) don't have to worry about 'swaying in the wind'. But Tall(50+ stories) buildings(BCD436HP) have to worry about it constantly. Which is why 'dampers' are put in the bottom of the building to account for the swaying. But buildings are generally not designed like the physical design of the SDS100.