Monday, January 4, 2016

TESTING THE HF SSB TRANSCEIVER




HF SSB TRANSCEIVER (Also known as Radio JJ and Radio Nelayan)
  • Type : Amateur Radio
  • RF Output power : 25-100 Watts
  • Transmitter Final : MosFet IRFP150N push pull
  • Frequency Range : 80 to 20 meter
  • Supply Voltage    : 13.8 VDC
  • Current Drain    :  TX max 25 amp  RX 400mA (may varies)
  • Mode : SSB (LSB and USB)
  • Memory Channel Storage  : 19 Channels
  • Receiver Type  : Single Conversion 
  • Step 1Hz, 10Hz, 100Hz, 1Khz, 10Khz, 100Khz, 1 Mhz
  • Frequency Generator DDS AD9850
  • LCD Readout 16x2 Green Colour
  • RIT
  • Frequency/Channel Locked/Unlocked mode
  • Dual VFO
  • Analog meter for Signal Strength and RF Power level 
  • Built-in AGC
  • Built-in Mic Compressor 
  • Antenna impedance/connector : 50 ohms / SO-239
  • Antenna input : PL259
  • Weight : 3.9kg
  • Dimension : H 8.5 x  W 25 x L28.5 cm
  • Colour Black
  • Manufactured : Homebrew Bandung Indonesia 

Microphone connection
Pin 1 -  Mic +
Pin 2 -  Short with Pin 3
Pin 3 -  Short with Pin 2
Pin 4 -  NC
Pin 5 -  PTT +
Pin 6 -  Short witn pin 7 (GROUND)
Pin 7 -  Short with pin 6 (GROUND)
Pin 8 -  NC


Function 



PRESS ONCE
PRESS AND HOLD FOR TWO SECOND
MODE
CHANGING MODE  USB/LSB (AM,CW UNVERIFIED)
LOCKED/UNLOCK . THE DISPLAY SHOWS “ < > “
PRESS AGAIN FOR UNLOCK
MENU

PROGRAMMING MEMORY CHANNEL
VFO
CHANGING VFO A OR VFO B
DISPLAY WILL SHOW AN ARROW   -> “
(UNVERIFIED)
RIT
DISPLAY SHOWS “0.000” TURN DAIL FOR INCRESEMENT OR DECRESEMENT
WHEN IN VFO MODE
VFO A = VFO B or VFO B = VFO A
STEP
BY PRESSING STEP BUTTON. AN UNDERSCORE WILL BE PRESENT BELOW THE DIGIT. HOLD THE STEP BUTTON TO MOVE THE UNDERSCORE TO THE DIGIT FOR STEP. TURN THE DAIL TO MOVE THE UNDERSCORE LEFT OR RIGHT THEN RELEASE STEP BUTTON AND TURN DAIL KNOB.

MEM (MEMORY)
DISPLAY MEMORY CHANNEL
TRANSFER MEMORY FREQUENCY TO VFO


Programming Memory  channel. (MEM)
1. PRESS AND HOLD MENU BUTTON.
2. PRESS AND HOLD MEM BUTTON UNTILL “SAVE TO M “ APPEARS ON THE SCREEN THEN RELESED MEM  
    BUTTON
3. TURN DAIL TO SELECT MEMORY CHANNEL.
4. PRESS MEM BUTTON UNTILL “SAVING” APPEARS ON THE SCREEN
5. RELEASED MENU BUTTON


This is a Homebrew SSB Transceiver made from Indonesia -Bandung.
No specification or user manual but I will up date for more information near future. Easy to operate with less button and knob.

The price is affordable for newbies. It has very good audio quality on received with built-in AGC. During the test on transmit, I received a very good feed back with more to base audio quality.
There are few modification to enable the Transceiver having continuosly without any gap from 2.100 MHZ right up to 17.100 MHz. The Bandpass Filter (BPF) seem has limited ranges.

Some of you might thinking of using a Antenna Tunner for these radio. Do not whistle as that is bad attitude and could cause interference to others. You might try experiment with low pitch tone just enought to tune the antenna tunner. Used low power when tunning or else the final mosfet might burst.

End Feed antenna are built for low power transmissions or QRP and advisable not to used above 20 watts.

Experimenting with these radio are fun but when goes faulty do not get frustrated, there is always a way when there is a will.

Thanks for sharing and if there are more information and wish to shared with others, please e-mail me. 9m2da@marts.org.my and no spam please. Thank you.

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