Yep, and makes it harder to parse too
I must the only one that caught Matt's sarcasm.
PiccoIntegra said:
As far as I'm concerned, all new scanners should have this feature, and have it provide as much detailed info as possible.
I agree with the first part. The scanner manufacturers are in competition with each other. They'd rather hide things they consider a competitive advantage. If a fully annotated data dump is going to reveal something they consider a "secret", they likely won't include it.
PiccoIntegra said:
I don't give a crap what the "veterans" think about adding more info into the data dumps.
Fair enough. For everyone else - I'm about to tell you what I
really think.
The data dump feature is artificially limited. It tries to do too much - and in so doing - limits what you can do with the radio. I'd go further to say not only is the "annotation" unnecessary - the de-interleave and FEC are also unnecessary. Existing decoding applications already know how to do this. Just give me the raw bits off the air! While it scores high in "plug and play" - it will never be as flexible as discriminator audio (and some radios provide this out-of-the-box).
Here's my gripe: don't limit me to three or four trunking protocols. Let's take LTR as a prime example. The code for recovering the bits for LTR and Passport is the same (that's bits, not frames). The radio does so now for LTR. But because the radio is specialized to LTR only - it won't give me the bits for Passport (which I could then re-assemble into Passport packets). The radio presumes that - because it does not know Passport - I shouldn't either.
This is an artificial limitation.
Want another example? P25 link control. If the CC dump feature only passes TSBKs (control channel messages), it isn't going to give me the link control data found on voice channels - which can be useful on it's own. The least common denominator is the bits. Provide the bits and you've covered both.
This is (again) an artificial limitation.
Here's another example: EDACS working channel messages; these are the equivalent of P25 link control messages (and comparable to the low speed data over a Motorola analog voice channel). The code to recover the bits (not the packets, just the bits) from an EDACS control channel will also serve to get these messages. Image a program that can scan the EDACS control channel and EDACS voice channels and spit out the correct LCN order for you. Wouldn't that make submitting new EDACS systems to the RR database easier?
This is an artificial limitation. Do I sound like a broken record yet?
I hope these examples will explain my discord with the CC dump feature. A simple A/D channel over the serial or USB cable would have done the trick - and provided the possibility for decoding modes that the radios themselves don't understand.
This is - so far - a missed opportunity.
Maybe - in a year or two - someone with "get it" and do this feature right. While this is an improvement over where we were two years ago; I would like to remind everyone that this feature has been around for a while. Remember the old OPTOComs with the "bitbanger" option. I think it did LTR and Motorola. That was ... something like ... 10 years ago. Now we have EDACS and P25 covered. This
is an improvement ... but it could have been done much better.