Transcript
http://www.kb2ljj.com/data/yaesu/ft-470.txt
YAESU FT-470 cross-band repeater: -------------------------------If you turn on the radio with the RPT key depressed, the radio becomes a crossband repeater. Dial up two frequencies you want to crosslink (be sure to pay attention to transmit offsets, if any), turn the radio off. Depress the RPT key while turning it back on. The tone encode/decode flags and the -+ flags will be flashing. When either band's squelch opens, the other band is moved into the primary frequency display and the transmitter keys. Note that the power output is decreased to LOW power. I made up an audio interface, using a mini and sub-mini phone plug. Tie the grounds together, and connect the center pins through a 0,01 uF cap. and 47K resistor in series. Adjust the volume control to about the 11 O'clock position. It work for both simplex cross-band and using a repeater on one band and a simplex freq on the other band. You do have to wait for the repeater to drop before you transmit on the simplex freq.
YAESU FT470 extanded RX-TX ranges: ---------------------------------VHF CHOICES: ==================================================================== R66 R67 R69 Rx and Tx Receive only ==================================================================== 0 0 0 144 to 146 MHZ 130 to 180 MHZ 0 0 X 144 to 146 MHZ 0 X 0 140 to 150 MHZ 130 to 180 MHZ 0 X X 140 to 174 MHZ X 0 0 144 to 148 MHZ X 0 X 144 to 146 MHZ X X 0 140 to 160 MHZ http://www.kb2ljj.com/data/yaesu/ft-470.txt (1 di 3)06/09/2009 23:29:52
http://www.kb2ljj.com/data/yaesu/ft-470.txt
==================================================================== (Notes: 1)The receive only ranges are enabled by powering up the unit with the up and down arrow buttons depressed. 2)X = 0 ohm resistor or a solder point. They are on "CONTROL UNIT". 3)R68 unchanged. 4)Same ranges with different combinations are for other repeaters shifts or channels steps default values.
UHF CHOICES: ==================================================================== R70 R71 R72 Rx and Tx ==================================================================== 0 0 X 430 to 450 MHZ X X 0 430 to 440 MHZ 0 X 0 430 to 440 MHZ X 0 X 432 to 438 MHZ ====================================================================
Software RX frequency expansion: -------------------------------1. Program 144.000 simplex into VHF vfo. 2. Press Function key F/M and then press RPT key to obtain the repeater shift. 3. Enter the code 0000 (four time zero). 4. Turn the radio off and then back on. 5. Press the RPT key twice to set + offset. 6. Press REV key once. Now display is 1.144.000 MHZ. 7. Enter this freq. into the U memory (Upper scanning limit) without the repeater offset. 8. Now from 1.144.000 MHZ with + displayed in VFO, go to 1.100.000 MHZ. The http://www.kb2ljj.com/data/yaesu/ft-470.txt (2 di 3)06/09/2009 23:29:52
http://www.kb2ljj.com/data/yaesu/ft-470.txt
fastest way is to push F/M key and DOWN key but if you pass 1.100.000 MHZ, you will need to restart from the beginning. 9. Push REV key to obtain 100.000 MHZ on the display. 10.Enter this into the L memory (Lower scanning limit) without the repeater offset. 11.Enter a value of 200.000 MHZ in U memory. 12.Now you can use the two limit memories L AND U as a third VFO able to scan from 100 to 200 MHZ (push F/M and MR when you are in L memory). 13.For UHF repeat same process at UHF vfo starting from 430.000 MHZ to obtain a range of 400 to 500 MHZ. 14.The sensitivity is lower than specifications outside the amateur band, but there are many transmitters you can stil monitor. 15.After this modifications restore your repeaters offsets.
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