MFJ Packet Only Transceiver. Runs all data rates from 1200 to 9600 Baud. MFJ 8621 is compatible with all TNCS's having hardware DCDs.
Receiver
| Frequency Coverage | : | 144-148 MHz |
| Sensitivity | : | 0.6 µV for 12 dB Quieting |
| Image Rejection | : | -45 dB or better |
| 1st IF | : | 10.7 MHz |
| 2nd IF | : | 455 KHz |
| 1st LO | : | Crystal , 3rd overtone |
| 2nd LO | : | 10.245 MHz |
| Selectivity | : | -6 dB at 20 KHz (data-passband filter) |
| AFSK Output | : | Unsquelched, 0dBm @ 3.0-KHz deviation |
| Current Drain | : | 25 mA |
Transmitter
| Frequency Control | : | Crystal, 18-MHz x 8 |
| FSK/AFSK Input level | : | 150mV p-p @ 1200 baud, .8 V p-p @ 9600 |
| Deviation | : | 0-5 KHz, adjustable at TNC |
| RF Power Output | : | 4.0 - 5.0 Watts into 50 Ohms |
| VSWR Tolerance | : | 3:1 Max. |
| Current Drain | : | 1.0 Amp @ 13.8 Volts |
