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JOPIX ITACA mod Jumper Functions | Radioaficion Ham Radio

JOPIX ITACA mod Jumper Functions


CB Radio JOPIX ITACA Jumper Functions

This radio is similar to the Magnum 257 which is manufactured in Korea and the Philippines, jopix this made in China.
JOPIX ITACA mod Jumper Functions

the 257 does sound stronger but our sample was the single final version but it could still modulate about 22w PEP out of the box. Probably need to raise the mic gain and the ALC a bit to really make her sing. This Chinese version has a lot of shielding added. We have had no troubles with the 257 and it has none of the shielding but guess they were working towards something here. All the pots are labelled which is a nice feature. Just might prevent someone from tweaking the wrong bit one day. This board has always been strong on FM and I am sure this one will be too but have not tested it. Extremely similar to the Phillipine manufactured radios but with a few significant modifications.

Jumper Functions

Inside the same little jumper board with four spots to put the jumper.

JOPIX ITACA mod Jumper Functions

CON1: ~ 10 Meter Only (28.000 – 29.699 MHz)

Continuous coverage (no 40 ch bandswitching required.)
All functions operate normally SHIFT functions in + or – offset mode and offset can be programmed by holding down the shift key for 3 seconds while Func is showing. Press clarifier knob to bring up Func in left hand upper corner of display.

Momentarily pressing shift with Func showing toggles between + offset and – offset and no offset.
Transmit frequency is altered by the offset.

STEP function allows frequency steps of 1khz, 10khz, or 100khz. The radio will always default to 10khz steps after STEP is pushed for a second time. Main use is to tune off the zeros or to reset end digit to a 5 or a zero or anything else from 1-9.
This radio will not change frequency in 5khz steps yet.

CON2: ~ 10 Meter & 11m Freeband Mode
  • At turn on, the radio defaults to where it was turned off.
  • To change mode, press FUNC and then press CALL for 3 seconds.
  • To return to previous mode, repeat above steps.
for information on Expanded mode operation, see CON3

CON3: ~ 11m Freeband mode (25.615 – 29.699 MHz)
In the Freeband or Expanded mode, the frequency range is divided into 10 Bands of 45 Channels each.
The Alpha channels 03A,07A,11A,15A,19A are available.
In Frequency readout mode just the frequency and Band information is shown.
  • A Band is 26.330 – 26.770 mhz
  • B Band is 25.615 – 26.055 mhz
  • C Band is 26.065 – 26.505 mhz
  • D Band is 26.515 – 26.955 mhz
  • E Band is 26.965 – 27.405 mhz (Normal US and Aust 40 ch CB)
  • F Band is 27.415 – 27.855 mhz  (International Free band)
  • G Band is 27.865 – 28.305 mhz  (Start of 10m band at 28mhz. Special 10m functions not available)
  • H Band is 28.315 – 28.755 mhz  (10 meter band. Special 10m functions not available)
  • I  Band is 28.765 – 29.205 mhz  (10 meter band. Special 10m functions not available)
  • J Band is 28.215 – 29.695 mhz   (10 meter band. Special 10m functions not available)
The frequencies outlined above can be further adjusted up and down by the use of the STEP function in 1khz increments. The final digit will change and radio will change channel up or down 10khz accordingly.

This is useful to get radio to drop down 5khz or to change channels on Zeros instead of fives when scanning the Ham or 11m free-band frequencies.

The Bands are shown on LCD display by letters (A through J) – Band E is regular 40 channel CB. To switch bands, press the CALL button momentarily.(do not hold down for 3 seconds).

In the Free-band mode, either the frequency or channel can be displayed on the LCD. To switch between frequency display and channel display, press the FUNC button and then press the CALL button momentarily (do not hold down for 3 seconds).

On the channel mode, the small number (0 – 9) to the right of the Band letter is the 1 kHz frequency display. Example: If the frequency is 27.355, then the channel display will indicate 35 E5. (35) being the channel, (E) being the Band, and (5) being the 1 kHz position of 27.355.

In the Freeband /Expanded mode, the  SHIFT (TX offset) function Will Not Operate.

CON4: ~ 40 Channel NZ CB Only (26.965 – 27.405 MHz)

THis radio would be greatly improved by being able to set the step to 5khz in the freeband and 10m modes. The position of the jumper sets the mode the radio will turn on in. You must open the radio to change the jumpers.

The ideal jumper setting is Con 2. You can go to the 10 meter mode with all the available shifts and steps and return to the freeband mode which includes the NZ and US 40 channel bands with a couple of clicks (Func and call for 3 secs)

JOPIX ITACA mod Jumper Functions
It has 5 memories that record frequency and mode. 3 button presses to enter and 2 to recall.

Jumper Functions

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