So what is CellTenna? It connects to a phone line, connects to a radio using RS232
or CIV, audio from the radio, audio to the mic input, and PTT.
Call CellTenna with your cellphone. Once connected, you can control the radio's
frequency, mode, scan, access memories, change filter width, control audio levels,
and transmit. Voice responses/prompts aid the user and gives status when requested.
Connects to phone line
Allows cellphone (or any phone) to access and control your base radio
Several pick up modes: Caller ID, Password, distinctive ring
Direct entry of frequency
Step up/step down frequency; stepsize control
Memory access (memories already programmed into your radio)
Frequency scan up/down
Audio level (receive and transmit)
Filter width (On some radios)
Status – voice readback of frequency and mode
Timers – 5 minute for receive and 90 seconds for transmit if no DTMF tones are detected.
Relay control voltage for external power relay
Auxiliary digital high/low output
Auxiliary analog input for voice readback between 0 and 9
Firmware easily updated by user
For greater detail, download the user manual. Questions, please email me. There
are other devices like this out there, such as MFJ's Remote Shack. Remote Shack
looks solid and has loads of features, but it doesn't have caller ID pick up and
it's nearly $500.