WROS490

DCS is transmitted at a rate of 134.4 bits/s.  The DCS waveform directly modulates the FM carrier, with a logic 1 represented by a positive carrier shift and a logic 0 represented by a negative carrier shift.  The FM deviation is about the same as CTCSS/PL.  The DCS waveform's edge rates are carefully controlled to limit harmonic content to avoid generating audible harmonics.
 
A DCS word consists of a 23 bit cyclic Golay code with 12 bit codeword (23,12) formed from the 12 least significant bits.  The 11 most significant bits are error correcting code bits generated by the Golay algorithm from the 12 codeword bits.  The 12 bit codeword consists of a fixed Octal 4 (100 binary) plus the 3 Octal digits that you can program.  A DCS word plays out backwards over the air due to the least significant bit being transmitted first.  A DCS word is sent repeatedly as a continuous low baud rate data stream.
 
DCS/DPL has a specific turn-off code or reverse burst at the end of a transmission which resembles a 134.4Hz sine wave.  In radio systems with a mix of CTCSS/PL and DCS/DPL usage, it is recommended to avoid using a CTCSS/PL tone of 136.5Hz due to the DCS/DPL kerchunk problem caused by the 134.4Hz DCS reverse burst.
 
The time required to reliably decode DCS is slightly longer than CTCSS and is about 350ms or less.  CTCSS typically decodes in about 250ms or less.  When decoding DCS on very weak signals, the DCS decode threshold can be as much as 2 dB worse than CTCSS.  From an end user perspective, these differences are way down in the noise (LOL) and it's hard to tell any difference.  The average end user probably won't notice any difference in DCS/DPL vs. CTCSS/PL performance.
 
DCS has its own set of issues to deal with.  The long high and low bit times of the NRZ data can cause problems with baseline wander and cause decode problems.  Distortion in the transmitted DCS waveform itself can cause decoding problems in the receiver.  DCS is also sensitive to frequency errors in the transmitter and receiver.  A signal transmitted with DCS received a few kHz off-frequency in the receiver impresses a DC offset on the recovered DCS waveform which causes the decoder to see a step function instead of the DCS data.  This causes very slow decoding or failure to decode.  Good low frequency response down to about 3 Hz in the modulator in the transmitter and in the discriminator output in the receiver are necessary for reliable DCS operation. IIRC phase modulated systems have trouble with DCS.  True FM modulated systems tend to work better.
 
Motorola trademarked the Digital Private Line (DPL) name.  Other manufacturers have to call it something else.  Digital Coded Squelch (DCS) is the generic name.  You'll see mixed usage of the two names as I have used them above. If it's not a Motorola radio, it's not DPL. It's DCS instead even though it's exactly the same thing as DPL.  Motorola originally implemented 83 DPL codes and manufacturers have expanded the set of codes to 104 codes.  Motorola's 83 DPL codes have been implemented by all manufacturers but not all manufacturers have implemented the full set of 104 codes.  Motorola's original set of 83 DPL codes have been fully vetted and are known to work well.  Some of the extra codes making up the set of 104 codes may not work as well.  YMMV.
 
I've also heard DPL sometimes referred to as "Definitely Prevents Losers". LOL.  I successfully thwarted a GMRS repeater jammer years ago with DCS/DPL so the jammer couldn't key my repeater.  The jammer didn't have a clue about DCS/DPL nor did he have DCS/DPL capability in his antiquated equipment and only had CTCSS/PL.  The jammer eventually gave up.  This trick won't work anymore given that practically all manufacturers now offer DCS capability in their radios.
 
DCS information:
https://wiki.radioreference.com/index.php/DCS
http://onfreq.com/syntorx/dcs.html
http://www.repeater-builder.com/tech-info/ctcss/ctcss-overview.html

Early January 2022 here in Alaska we had a horrible winter storm that knocked out power to thousands as well as cell service to some, I lost heat, power, and cell service in my area for 3 days and I was completely unprepared. I have four children my youngest was 10 months old at the time. After that happened I promised myself I will never let that happen again. I then stared going down the "prepper" road and doing research on the subject. This is when I first learned about GMRS. 
When I Youtubed GMRS the first video to pop up was NOTARUBICON and his videos on GMRS. I took it all in and began taking the steps to get my license. I then watched a video with him and Josh at HAM RADIO CRASH COURSE talking about GMRS and Amateur radio. Then I found Jason at HAMRADIO 2.0 along with this website and ARRL and Radio Reference etc. 
The biggest thing that drew me into Randy, Josh, and Jason was that I could identify with all three in them as far as age, family/young children, similar interest, and their ability to explain everything rather simply and with some comedic relief. I have now since received my tech license (KL5LD) and I give full credit to Josh and Jason because their YouTube channels and the information they provided helped me tremendously in passing my test as well as taking a class with Bob Phinney over at New England Sci-Tech, Thanks again Bob (K5TEC)!
I now have both GMRS and amateur radios that I use everyday, and I enjoy using both. With family it is mostly GMRS, while my kids are studying for their tech license and I for my general and with ham it is mostly for the entertainment of listening to all the old timers gripe at each other over ALLSTAR LINK on the the east coast repeater, it is quite hilarious to me personally (I'm just kidding guys), but there are also some really solid guys out here in Alaska that I have met over ham and they have been extremely kind and helpful in so many ways I couldn't even begin to list them. Heck, just a couple weeks ago my family and I got invited to a local clubs pot luck and gift exchange for Christmas when I was trying to find info during another horrible winter storm we just had before Christmas(It was pretty bad)! Yet, when I have talked to people over GMRS it is pretty straight forward, kinda like having a conversation with somebody in person. I'm going to be honest and say that I have been meeting more and more people in my area that have GMRS radios and they just use them. No license, no call signs, no codes or other things of that sort. It is just people out and about enjoying the great outdoors and using their radios as a means to communicate because there are many areas within our state where there is very shotty cell reception if at all and using these radios are literally life savers for people. 
This past September I went Moose hunting with my son and we ran across a bunch of guys using GMRS radios and when talking with them I would bring up the whole license issue and they all just laughed at me as if that was actually a thing. I guess up here in Alaska a lot of people just have a different mentality about how they utilize this tool. Everybody gets along great with no issues that I have ever heard of and it seems to be a growing "hobby" for us up here with new repeaters popping up, which is great!
Sorry for the long winded comment, but with all that being said I guess it is different in each region and how people are using GMRS and ham. Down in the states you guys seem to be using it for, well, the reasons you have stated, but up here in Alaska, in what I have seen and experienced, we are not using it as simply a "hobby" (this is not to say you guys are "just" using it for the same reason) to meet new friends, I feel it is much more than that, it is literally a life line. It is a way for us to stay connected to each other during our rough winters when the power goes out and its -20 outside, it is a way to communicate while out in the bush chasing down a 1,200 lbs moose to fill our freezers for the year, it is a way to tell the guy further down the river to get ready, the salmon are coming, it is a way to tell our family and friends to watch for that bear out in the tree line with her cubs while out picking blueberries, from what I have seen up here in the Great North it is much much more. And who am I to tell anybody how to use their radios? I'm just another voice over the waves. To each their own. Be safe and respectful, have fun, and watch your six.     

The CHIRP config from @wayoverthere got me to where I could RX/TX again but had me stuck in VFO mode.
Someone at my local ham club Slack (who I bought the KG-805G from) had a Wouxun config that I subsequently wrote to the radio.
I think I'm back in business now.
I'm uploading the stock KG-805G config now.
I wonder if going into the KG-805G programming software from Wouxun and creating a new config and writing it to the radio would have gotten me back to working after @wayoverthere's CHIRP config - I guess we won't know. I don't really wanna chance killing this radio trying to take it through this cycle again.
Thanks for the help and ideas, everyone.
KG-805G stock.tw

I grabbed that out of my folder of radio images, so that may have been a work in progress file (the base read, post reset). I'll try to pull a fresh read from the radio this evening, or I can reset it to stock and read that.
In terms of the radio, it isnt actually limited itself, but the combination of it normally having no vfo access in the menu and the software only allowing programming within bounds for gmrs are the limiting factors. It does go into VFO mode when you factory reset in the wouxun software, but thenwouxin software would normally prevent loading any tx channels not in bounds.

Oh wow, mouse urine - that's probably a great conductor for shorting circuits.
This KG-805G was basically in rain water - which is... pretty much distilled water? Anyway, RX/TX seems to be working - I'm thinking I'm just dealing with programming/CHIRP issues at this point