The Transceivers where made fully open by removing coding diodes. The testings are done with 50 Ohm dummy load, Revex W570 SWR and power meter and 13,8 Volt to the transceivers.

6 Meter
T8E                               T81E
50 MHz = 6,2 Watt                 50 MHz = 5,0 Watt
54 MHz = 5,0 Watt                 54 MHz = 5,5 Watt
60 MHz = 4,2 Watt                 60 MHz = 4,0 Watt
62 MHz = 2,5 Watt                 61,600 = 4,0 Watt Highest transmittable. 
63 MHz = 1,5 Watt
64 MHz = 0,6 Watt
65 MHz = 0,2 Watt
66 MHz = 0,1 Watt
66,630 MHz = Highest transmittable (PLL unlocks above this frequency)


2 Meter
136 MHz = 5,0 Watt                136 MHz = 5,5 Watt 
144 MHz = 5,5 Watt                144 MHz = 5,0 Watt
148 MHz = 5,0 Watt                148 MHz = 5,0 Watt
150 MHz = 4,5 Watt                150 MHz = 5,5 Watt
160 MHz = 3,8 Watt                160 MHz = 3,5 Watt
170 MHz = 3,2 Watt                170 MHz = 2,0 Watt
180 MHz = 2,2 Watt                180 MHz = 1,4 Watt
185 MHz = 1,3 Watt                185 MHz = 1,0 Watt
190 MHz = 0,7 Watt                190 MHz = 0,8 Watt
197 MHz = 3,8 Watt                197 MHz = 0,8 Watt
200 MHz = 3,0 Watt                200 MHz = 0,7 Watt 
210 MHz = 5,0 Watt                210 MHz = 0,1 Watt 
220 MHz = 5,1 Watt                220 MHz = Transmits but 0 power
225 MHz = 1,3 Watt                225 MHz = Transmits but 0 power
228,825 MHz = 1,3 Watt Highest transmittable.      229,975 Transmits but 0 power

1 Meter
                                  331,600 MHz = Lowest transmittable 0 power 
360 MHz = 0,8 Watt Lowest TX      360 MHz = 0,05 Watt
370 MHz = 0,8 Watt                370 MHz = 0,02 Watt
380 MHz = 1,6 Watt                380 MHz = 0,01 Watt
390 MHz = 3,0 Watt                390 MHz = 0,01 Watt


70 Cm
400 MHz = 2,0 Watt                400 MHz = 1,6 Watt
410 MHz = 2,7 Watt                410 MHz = 3,8 Watt
420 MHz = 4,8 Watt                420 MHz = 4,0 Watt
430 MHz = 4,2 Watt                430 MHz = 4,7 Watt
440 MHz = 5,0 Watt                440 MHz = 3,5 Watt
450 MHz = 4,0 Watt                450 MHz = 3,0 Watt
460 MHz = 3,4 Watt                460 MHz = 3,2 Watt
470 MHz = 2,5 Watt                470 MHz = 1,5 Watt
480 MHz = 1,2 Watt                480 MHz = 1,0 Watt 
490 MHz = 0,8 Watt                490 MHz = 0,4 Watt
497,850 = 0,4 Watt Highest TX     492 MHz = 0,2 Watt

23 Cm
                                  1240 MHz = 0,8 Watt
                                  1250 MHz = 0,6 Watt
                                  1260 MHz = 0,5 Watt
                                  1270 MHz = 0,6 Watt
                                  1280 MHz = 0,8 Watt
                                  1290 MHz = 0,9 Watt
                                  1300 MHz = 0,8 Watt

RX area

50 MHz - 230 MHz (For Both)    
300 MHz - 1000 MHz (For Both)
1240 MHz - 1300 MHz (Only T81E)

To make the IC-T81E transmit on 220 MHz the TX bandpass filter must be modified.
By making changes in the TX bandpassfilters and PLL circuitry it can be possible to expand the TX further according to this tabel.

T8E                                     T81E
50 MHz - 76 MHz                         50 MHz - 87,980 MHz 
136 MHz - 230 MHz                       136 MHz - 230 MHz
300 MHz - 600 MHz                       300 MHz - 600 MHz
                                        1240 MHz - 1300 MHz

To make the transmitters work on other bands than this, a logical override circuit must be made and mounted into the transceiver. This circuit intercepts the signals between the microprosessor and the radio circuitry and enables the TX when the PTT switch is pressed even if TX clearence from the microprosessor is missing. With this extra circuitry monted into the transceiver it should be possible to enable TX on 76 MHz - 136 MHz and for the T81E on frequencies between 600 MHz and 1000 MHz.

If you wish to use the transceiver on the air band, the logical intercept circuit must be mounted. Then you must modify the TX bandpassfilter and maybe the PLL circuit. Then you have to mount a micro relay or an electronic switch. With this relay you will be able to switch the audio signals from the mic circuit from going to the FM modulating varactor diode to the base of a prefinal transistor in the TX circuit.

This will make the transmitter transmit AM instead of FM. The AM circuit can be mounted on the same board as the logical intercept circuit.