| GENERAL |
| Type: | Citizen band transceiver |
| Frequency range: | 27.60125-27.99125 MHz |
| Channels / tuning steps: | 40 (UK CB27/81) |
| Mode: | FM |
| Frequency control: | PLL (C5121) |
| Frequency stability: | ?% |
| Clarifier or Delta tune: | No |
| Power supply: | 13.2 VDC (2-pin connector, on pigtail) |
| Current drain / power consumption: | RX: ? mA
TX: ? A |
| Antenna impedance / connector: | 50 ohm / SO-239 |
| Dimensions (W*H*D): | 114*32*170 mm (4.5*1.25*6.7") |
| Weight: | 735 g (1.62 lb) |
| Other features: | |
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| RECEIVER SECTION |
| Receiver system: |
Double conversion superheterodyne
1st IF: 10.695 MHz
2nd IF: 455 KHz
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| Sensitivity: | 0.7 uV (12 dB SINAD) |
| Squelch sensitivity: | |
| Selectivity: | |
| Image rejection: | |
| AF output power / speaker: | ? W at ?% distortion / ? ohm |
| External speaker connector: | TS "Minijack" (3.5 mm), 8 ohm |
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| TRANSMITTER SECTION |
| RF output power: |
High: 4 W
Low: 400 mW
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| Modulation system: | |
| Max FM deviation (Factory set): | ±? KHz |
| Spurious emissions: | Better than -? dB |
| Microphone impedance / connector: | ? ohm / 5-pin DIN (180°) |
| Microphone input level: | ? mV |
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| MISCELLANEOUS |
| Manufactured: | Thailand (By Maxon), 1991-199x (Discontinued) |
| Main PCB: |
111081-A by Maxon
Single sided with through-hole components
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| Sub PCBs: | ? - LED channel display and S-meter board |
| Additional info: |
This is an updated 77-104UK with a new main board, a new PLL
and a rotary encoder instead of a traditional channel selector.
This model always starts on channel 9 at power on.
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| Related documents: |
PLL: C5121
FM-IF: MC3357P
AF amplifier: KIA7217AP
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| Known markets and approvals: |
United Kingdom
CB27/81, MPT1320UK
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| Sams Photofact #: | None |
| Modifications and fixes: | |
| Reviews: | |
| Options / Accessories: |
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