KENWOOD TH-28e/48e Manufacturer guarantees TX/RX specification only in amateur band. The above frequency range is for the microprocessor's range so that the receiver sensitivity or TX output power of expanded band may be reduced.
Remove the diode D8 from the control unit. (FM mode only) With Air Band and 340 Mhz expansion, operating band can be changed The frequncy can then be extended as shown in the table 1 an 2 on page 3 and 4.(See the destination chip diode position drawing on the attached sheet.)
The frequency display range may differ from the PLL lock range. The 360 Mhz band and the 800 Mhz band can be received. To expand the 360-Mhz band and the 800-Mhz band remove chip diode D8 of the control unit as shown in table 2.
You can switch between the UHF amateur band the 360-Mhz band and the 800-Mhz band by pressing the [ F ] key for 1 sec. and then the [ LOW ] key. Program scan is not possible over several bands, but is possible within each band. Initial step value is 12.5 Khz.
___________________________________________________________________ I I 360-Mhz band I Air band I I===================I=======================I=======================I I Step I5,10,15,20,12.5,25 Khz I5,10,15,20,12.5,25 Khz I I-------------------I-----------------------I-----------------------I I Frequency range I340.000-399.987.5 Mhz I 100.000 - 117.975 Mhz I I I FM I FM I I I I 118.000 - 135.995 Mhz I I I I AM I I-------------------I-----------------------I-----------------------I I Initial frequency I 340.000 Mhz I 118.000 Mhz I I___________________I_______________________I_______________________I
| Type: | Amateur VHF transceiver |
| Frequency range: | 144-146 MHz |
| Mode: | FM |
| RF Power output: | Hi: 2.5-5 W (depending on voltage) Lo: 0.5 W El: 20 mW |
| Receiver system: | |
| Sensitivity: | |
| Selectivity: | |
| Image rejection: | |
| Voltage: | 7.2-16 VDC |
| Current drain: | RX: Max 55 mA TX: Max 1.4 A |
| Impedance: | 50 ohms / BNC |
| Dimensions (W*H*D): | 50*116*38 mm (1.97*4.57*1.5") |
| Weight: | 330 gr (11.64 oz), with PB-13, antenna, handstrap and belt hook |
| Manufactured: | 1992-19xx (Discontinued) |
| Other: | RX: 118-174 / 430-440 MHz New price 1992 in Sweden: 3395:- SEK |
| Related documents: | User manual (1.8 Mb) |
| Modifications: |
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