Batboard

I was on here answering a couple PMs, and some mention of the "1C5E" flashcode (599108-1C5E00-1), so I plugged it into a decoder, and had some questions about some of the more unusual options. (Yes, I searched, but didn't find anything meaningful.)

By the way, what 'is' this flash? I can only assume it's a whore, but it's not the infamous Nick 4F1E. Anyone know the origins of it?

H39: Selective Radio Inhibit

I know what this one is, but I thought it was a pretty standard feature with MDC. Is this not the case? Do most 'basic' MDC radios not support being inhibited over MDC?

Q181: StatAlert

Again, I know what it is, but is MDC1200 signaling not standard on ASTRO radios? Short of the ol' MURS Spirit, every Motorola radio I've owned has done it.

W/Q947: APCO Packet Data

My search turned up mention of this as a radio-to-radio data modem sort of thing. How exactly does this work if it's a feature in an HT?

G182: Enhanced Radio Call Protocol

I see it mentioned in a lot of Flash feature lists, but what is it?

H387: Conventional Voting Scan

??

Thanks for putting up with my questions.

This is the earlier Nick whoreflash code. Just as nutty as the 4F1E.

H39 adds the inhibit feature. I had an earlier radio that didn't have this. A later radio with this flash did have it in the RSS. Its pretty standard now and may have been incorporated into the newer H35 packages for current radios.

StatAlert are more advanced MDC1200 features that have no bearing on most people's lives. Its only good from the radio to the console and back. Nothing user to user.

Data is just that. Turns the radio into a RF modem if its on a digital system with its features. Does not work radio to radio without infrastructre.

G182 - I don't think I have ever really seen anything about it. Never noticed any addition options between radios with and without it.

H387 - Works for conventional systems that use MULTIPLE transmitters on MULTIPLE frequencies for "Channel 1". Some systems (not many) may transmit the same message on a different frequency at differernt locations for coverage problems. Sort of a poor mans simulcast. It scan's all those channels to determin what site is the closest for the best RX.

In other words, don't use it unless you have such a system.

The Kentucky State Police system is a perfect example where H387 Conventional Voting Scan is utilized.

Dave

Same for the New South Wales Police VHF and UHF systems in Australia.

Basically, you have a special voting scan list in the radio, known by other manufacturers as a votegroup. Each channel in the votegroup will cover a particular geographical area, with each channel having a different output frequency, but an identical input frequency.

The input to all of these repeaters goes into a voter, and the voter's output (the best quality input signal) will then go to out to all the transmitters. When the system is keyed up, your radio will then scan the output frequencies, all of which are broadcasting the same traffic, and select the one with the highest RSSI.

Systems like this don't seem to be that popular in the USA.

mr.syntrx wrote:Same for the New South Wales Police VHF and UHF systems in Australia.

Basically, you have a special voting scan list in the radio, known by other manufacturers as a votegroup. Each channel in the votegroup will cover a particular geographical area, with each channel having a different output frequency, but an identical input frequency.

The input to all of these repeaters goes into a voter, and the voter's output (the best quality input signal) will then go to out to all the transmitters. When the system is keyed up, your radio will then scan the output frequencies, all of which are broadcasting the same traffic, and select the one with the highest RSSI.

Systems like this don't seem to be that popular in the USA.

I'm glad someone blew the aussie trumpet!

Our UHF Voting works well and it doesn't take much fiddly effort to get it that way, where as simulcast can be a nightmare to get right, especially on digital... Of cause voting eats more spectrum up.

No comment on our VHF network, I think the TAIT's are to blame!