I have a question regarding the CTCSS function on my home patrol. I cannot seem to get that function to work on my radio. I have many frequencies for my area programmed, but when the scanner stops on any those frequencies, the CTCSS codes do not show up in the display. And I am also getting splash over from frequencies that are close together 156.000 & 156.2175. I have all frequencies programmed through SENTINEL, with the correct pl's, but the radio doesn't seem to recognize them. I have had the radio for a few years and I believe the CTCSS function worked before. Maybe I changed something by mistake??
For the HP-1, on conventional frequencies, if there is a valid tone (PL/CTCSS), DCS code (also called DPL), or NAC (for digital transmissions), the scanner does not display that when receiving a transmission. If
NO tone, DCS, or NAC is entered, and the frequency is set to
search (in the tone/code/NAC field), then, when it recognizes a valid entry, that value will flash in the lower right of the display.
As far as the adjacent channels, that unfortunately is an annoyance. The HP-1 does not have a narrow filter such as the 436HP or 536HP, and may receive strong adjacent channels. Entering the correct tone/code/NAC (if known) for the frequency, plus possibly resetting the Mode to NFM (instead of 'FM' may help, but if the adjacent signal is strong enough, you'll still hear it.