By pressing and holding the following keys while powering on the radio you will gain access to the hidden menu of the Yaesu FT-450.
Press and hold ATT/IPO, NB and AGC buttons at the same time and press the power button and power on radio while still holding in these buttons, and to change the setting you simply use the DSP control (rotary) to select the item you want to change and use the main VFO knob to alter the independent settings of your choice.
To change the color of your screen, change the settings of LEDINT1, LEDINT2 and LEDINT3, will do most colors. To exit the hidden menu simply press (F) function key. In some radios the radio might also do a full reset.
So if you go in there and change anything in there and if you ruin a perfectly good radio, no one is to blame but YOU!
Straight cable, Pin for Pin 1-1, 2-2, through to 9-9, or at a minimum if you're making your own: 1-1, 2-2, 3-3, 5-5, 7-7, and 8-8.
WXJT-X FT8 setup = For FT450D Select FT450 | 38000,8,n,2 | XON/XOFF | DTR = Off | RTS = High | PTT = CAT | DATA/PKT | No Split |
| These Technical Menu settings are in my FT-450AT | ||||
| FT-450AT Service Menu Settings - VK4SN | ||||
| Service Menu | Setting | Service Menu | Setting | |
| S-meter | TX Gain Adj | |||
| SMADJ10 | 25 | TXG1H | 56 | |
| SMADJ1 | 71 | TXG2H | 41 | |
| SMADJ2 | 56 | TXG3H | 48 | |
| SMADJ3 | 59 | TXG4H | 63 | |
| SMADJ4 | 60 | TXG5H | 63 | |
| SMADJ5 | 45 | TXG6H | 57 | |
| SMADJ6 | 43 | TXG7H | 54 | |
| SMADJ7 | 10 | TXG1L | 33 | |
| ALC | TXG2L | 25 | ||
| I-ALC1 | 58 | TXG3L | 29 | |
| I-ALC2 | 51 | TXG4L | 40 | |
| I-ALC3 | 58 | TXG5L | 39 | |
| Power Adj 100W | TXG6L | 32 | ||
| 1PO100 | 148 | TXG7L | 33 | |
| 2PO100 | 146 | AM Carrier Level | ||
| 3PO100 | 148 | AM-CAR | 103 | |
| 4PO100 | 150 | ALC Meter Adj | ||
| 5PO100 | 149 | ALCM L | 115 | |
| 6PO100 | 138 | ALCM H | 95 | |
| 7PO100 | 137 | Reverse ALC Adj | ||
| Power Adj 50W | 1-RALC | 63 | ||
| 1PO50 | 96 | 2-RALC | 59 | |
| 2PO50 | 94 | 3-RALC | 63 | |
| 3PO50 | 96 | 50RALC | 65 | |
| 4PO50 | 95 | Volt Meter Adj | ||
| 5PO50 | 94 | VM-ADJ | 4.40 | |
| 6PO50 | 94 | HF SWR | ||
| 7PO50 | 87 | HF 1SWR | 85 | |
| Power Adj 20W | HF 2SWR | 85 | ||
| 1PO20 | 48 | HF 3SWR | 85 | |
| 2PO20 | 48 | 50 SWR | 75 | |
| 3PO20 | 48 | ATAS Controller | ||
| 4PO20 | 48 | ATAS DN | 80 | |
| 5PO20 | 48 | ATAS BK | 95 | |
| 6PO20 | 48 | ATAS UP | 255 | |
| 7PO20 | 45 | Temperature | ||
| Power Adj 10W | TMPWRM | 130 | ||
| 1PO10 | 26 | TMPHOT | 68 | |
| 2PO10 | 25 | TMPOVR | 41 | |
| 3PO10 | 26 | |||
| 4PO10 | 26 | TYPE | A | |
| 5PO10 | 26 | |||
| 6PO10 | 25 | Front display colour | Orange | |
| 7PO10 | 22 | LEDINIT1 | 100 | |
| Power Adj 5W | LEDINIT2 | 30 | ||
| 1PO5 | 9 | LEDINIT3 | 3 | |
| 2PO5 | 9 | |||
| 3PO5 | 9 | |||
| 4PO5 | 9 | |||
| 5PO5 | 9 | |||
| 6PO5 | 9 | |||
| 7PO5 | 9 | |||
