This ANNOYING echo!!!!!

[LPD67]

My Department (Lodi, as you might have presumed) just made some changes to our Channel 1. 460.3000. Apparently it's now "Digital."

My question is for those people who use SSD radios. I wear an ear piece (two-wire system) and when I key my car mic there is a significant delay as far as what I hear in my ear piece. It makes for a very annoying night and I generally have to turn my portable volume down almost all the way.

I'm making the switch to SSD here shortly and I'm curious if their radio has the same annoying delay/echo?

 

[pfish]

APCO25 does have a delay, and when you hear yourself on the other end it gets very ugly. Since SSD is still analog, they do not face this problem.

 

[RolnCode3]

Does that delay prevent feedback?

And there is no delay on the SRRCS system as previously noted. Just tons and tons of feedback.

It took me a while to get used to the earpiece as well. Especially if your portable drops reception when you're on the car radio. Gotta' remember to keep talking - you're still transmitting.

BTW - I am not SSD.

 

[LPD67]

Does that delay prevent feedback?

Nope. Still have feedback issues if no ear piece is worn and portable is turned up loud enough. It's just "delayed" feedback, albeit a little less "screechy."

It sucks having this delay.

 

[gusbuster1217]

Well at least the signal comes in great here in Manteca

At least you'll be heard by somebody.

 

[LPD67]

Well at least the signal comes in great here in Manteca

At least you'll be heard by somebody.

I'm sorry you have to listen to our dispatchers and for that matter some of our officers.

 

[RolnCode3]

I'm sorry you have to listen to our dispatchers and for that matter some of our officers.

I know that feeling.

 

[LPD67]

Hence my move to SSD. May not be perfect there but at least it's better.

 

[Sac916]

My Department (Lodi, as you might have presumed) just made some changes to our Channel 1. 460.3000. Apparently it's now "Digital."

My question is for those people who use SSD radios. I wear an ear piece (two-wire system) and when I key my car mic there is a significant delay as far as what I hear in my ear piece. It makes for a very annoying night and I generally have to turn my portable volume down almost all the way.

I'm making the switch to SSD here shortly and I'm curious if their radio has the same annoying delay/echo?

The delay is due to the car radio transmission having to hit a repeater, then being re-broadcasted out across the network. The portable radio is getting the transmission off the repeater/tower network, not straight from the car radio. That is the cause of the delay.

There can be a delay on the SRRCS system, but it's ever so slight. Also, SSD operates on the SRRCS system, they do not "own" the system. When transmitting on the trunked radio system, a user must key up, wait for a split second, then speak. There is a delay, but it occurs when you first key up. All users are instructed to key up, take a breath, then speak, otherwise your first syllable or portion of transmission will be cut off.

 

[emt_531]

On a good day, we get lots of bleed over from your guys' radios. Its on Corcoran PD's channel here in the Central Valley.

 

[selgaran]

The delay is due to the car radio transmission having to hit a repeater, then being re-broadcasted out across the network. The portable radio is getting the transmission off the repeater/tower network, not straight from the car radio. That is the cause of the delay.

Well, not exactly.

In an all analog system, with a single transmitter, the delay you describe is so small, you'd need special equipment to measure it.

In an all analog system, with simulcast transmitters, there is an audio delay caused by the need to synchronize the different transmitters. This is usually a fairly short delay, but can be noticeable and bothersome.

In a digital system, there are delays introduced in at least two places - the analog to digital conversion at the transmitter, and the digital to analog conversion at the receiver. There may be other delays introduced in the backbone as well. These delays can be rather significant and very bothersome to users.

 

[kma371]

My Department (Lodi, as you might have presumed) just made some changes to our Channel 1. 460.3000. Apparently it's now "Digital."

My question is for those people who use SSD radios. I wear an ear piece (two-wire system) and when I key my car mic there is a significant delay as far as what I hear in my ear piece. It makes for a very annoying night and I generally have to turn my portable volume down almost all the way.

I'm making the switch to SSD here shortly and I'm curious if their radio has the same annoying delay/echo?

By "digital" do you mean P25? I'm still hearing them analog.

Congrats on the move. You should have come to my department...I need the seniority Have fun in the jails

 

[RolnCode3]

And Sac County isn't the greatest employer. Kinda' notorious at the bargaining table.

Good luck on the move.

 

[LPD67]

By "digital" do you mean P25? I'm still hearing them analog.

Congrats on the move. You should have come to my department...I need the seniority Have fun in the jails

Nope, not P25. I wish I could specify what they meant by digital but they didn't really tell us a whole lot about the change. The change was required only because our channel 1 was going extinct and kept "crashing."


Thanks for the congrats. And Bill, I know y'all are short-handed at SJSO but I want to SHORTEN my commute, LOL. The jails will suck, but maybe I can get lucky and land a spot at the Airport or RCPD since I have DUI and Traffic school/experience under my belt.

 

[SLWilson]

Squeal....

Does that delay prevent feedback?

And there is no delay on the SRRCS system as previously noted. Just tons and tons of feedback.

It took me a while to get used to the earpiece as well. Especially if your portable drops reception when you're on the car radio. Gotta' remember to keep talking - you're still transmitting.

BTW - I am not SSD.

No true "feedback" like you are used to. What you get is the echo effect. And it keeps going and going and going as long as you're transmitting....

Steve/KB8FAR

 

[AZScanner]

LOL, yeah it's an interesting side effect of P25 systems.

If you listen to my feed long enough (see my sig line) you will hear someone who is transmitting from one radio while in audio range of another. "10-4 we're enroute" becomes "10-4,4,4, we're, re, re, enroute, route, route..."

One particularly slow night I even heard some smart aleck on the airport system doing the infamous "Hello? (hello? hello? hello?) Echo! (echo! echo! echo!)" until someone else got on and said "Alright, very funny. Knock it off please." Great stuff.

-AZ

 

[sonticus]

I'm making the switch to SSD here shortly and I'm curious if their radio has the same annoying delay/echo?

Yes there is a bit of a delay, and yes it's noticeable, but it's easy to get used to. The delay is less then a second and even if you can't get used to it you can just turn down the portable.

 

[LPD67]

Yes there is a bit of a delay, and yes it's noticeable, but it's easy to get used to. The delay is less then a second and even if you can't get used to it you can just turn down the portable.

Yea, I'm aware of how to deal with it I just liked it when I could hear myself speaking on the air, seemed to make transmissions a little more smooth.

 

[WayneH]

The delay is caused by the DSP - or signal processing - in your radios. All the ASTRO and ASTRO25 radios have DSP technology which will affect both analog and digital.

 

[sonticus]

Yea, I'm aware of how to deal with it I just liked it when I could hear myself speaking on the air, seemed to make transmissions a little more smooth.

The first time I did it I wanted to hear what I sounded like on the air. Kind of messed up that transmission because I wasn't expecting the delay, but once I got used to it I was fine. Helped me make sure I wasn't mumbling, or overloading the mic etc. (the mic I was using was very picky)