I'll do my best after a few month with one of these.
Not sure what the dual standby is.
VHF&UHF, UHF&UHF or VHF&VHF working modes is how you can program a channel. You can have the transmit and receive for a single channel configured in any way with any split basically.
Low-voltage voice prompt is self explanitory really, the radio talks to you and tells you the battery is low. I keep that function off so I don't know if it works and don't care. It has a battery indicator on the display that works just fine.
Busy Channel Lockout is just like the lockout on a scanner basically except when you stop and start scan you will hvae to lock the channel out again.
Transmit Over Timer is a timer that will cut off your transmission after a predetermined amount of time you can enter thru the menu.
Step is the Frequency step size when scrolling thru in vfo mode or entering frequencies, changable by channel.
Multiple scan modes, the radio will scan all channels or priority channels only. I beleive it also has carrier scan and timer scan , you would normally set that to carrier scan.
The radio has only one receiver so it will only receive on one channel at a time. It will not transmit and receive at the same time, your either transmitting or receiving. When its parked on two channels one on each display it just scans them both.
The only options for the programmable side key is: FM Radio band, scan, lamp, SOS channel. Thats it.
For reply to transmissions, during scan if you press ptt it will stop scanning and start transmitting on what ever channel it landed on. If it stops on a channel and ptt is pressed it will transmit on that channel. If you have two channels on the display not scanning you use the A/B button to switch between the two to determine which on is active for transmitting.
You can alpha tag your channels and display them as frequency or by the alpha tag. There is also an option I think it supposed to toggle the display between the two but it doesn't work on mine. It one or the other.
I think you can do this as mine seems to be this way. I can only get it to take programming thru the software.
The radio definetly has its quirks like when scanning with the backlight on it stays lit while scanning then shuts off when it stops on a channel. But it does have one hot little receiver in it or has an excellent antenna. I sit it next to my BCD396T monitoring traffic on a repeater about 25 miles away and the uniden hears nothing while the wouxun hears the repeater with no trouble.
IMO its well worth the $100 bucks or so you can get one for now. Perhaps they've fixed some of the quirks in the newer radios. I bought mine last December from a wacky china man.
