If you are programming a repeater pair and select plus, the software should automatically select the proper frequency offset, based on the starting receive frequency. The duplex mode is going to be None for the GMRS and FRS channels, unless you are programming a GMRS repeater pair. Just ignore DTCS RX Code, DTCS Pol, and Cross Mode until you learn about how those items work. If you look at the image below, you will see which tone column is associated with what tone mode. I would suggest spending some significant time researching how that works before you mess with it. Than you can reverse the code sequence on none, one, either or both. You can have DTCS or Split DTCS, transmitting one code and your squelch opens with another code. Most repeater owners don't use this method. This mode is commonly called Digital Code Squelching. You will also notice that I have two memories configured for DTCS, at the very bottom. I would suggest spending some significant time researching how that works before you mess with it.) That is for radios that support transmitting one tone to open a repeater, but having another tone open the squelch on their radio. Use the TSQL column if you only want to here people or machines using a tone when they transmit. So, you populate a value in the Tone column if you what to trip a repeater, but hear everyone. So, by using TSQL, I know when I hear a signal, it is coming from one specific repeater. The reason I have that set up is because there are two repeaters near me, using the same frequency pairs, but they use different tones.

That function transmits a tone to open the repeater and my squelch only opens when the repeater transmits that same tone. But I also have TSQL on two repeater memories. If you look at my example below, I have Tone set on the repeater memories. The tone mode that is most commonly used is 'Tone', which your radio transmits sub-audible tones to open the squelch of the radio/repeater receiving your signal. There are a few options to pic from, but until you get used to the radio and software, I would not set the tone mode for anything unless needed for a repeater. the tone mode can be a little confusing for people. Pick a name that give you an idea of what channel you're on. If it is a repeater frequency, you enter the repeater output frequency, which is what you will be listening to. LOC is the channel location, aka what memory slot.įrequency is the simplex frequency of the channel you want to use. Use the image below as a reference for what the general meanings are. I can't speak about what your radio can or can't do, but Chirp is pretty straight forward. Or this if you want to hear everyone, not just repeater traffic. This image is how you should set up CHIRP. EDIT: You have one of the more complex requirements.

Chirp programming url