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- Subject: Alinco DX70T Mod
-
- This mod is a little tricky to perform, since it uses surface
- mount devices, so I TAKE NO RESPONSIBILITY IF YOU BREAK YOUR RIG.
- Alinco, further, in their mod sheet, warns that performing this mod
- incorrectly will NOT BE COVERED via warranty. At first, I tried using a
- Salami sized soldering iron--- take my word, get a good, very fine point
- iron of about 15 or 20 watts max! Make sure it is static guarded too.
-
- Ok...Here we go.
-
- 1. disconnect power
- 2. disconnect antenna
- 3. remove control head, disconnect control cable
- 4. remove 4 screws on back of control head,
- 5 remove (unsnap is more like it) the control head back panel.
- 6. THE MOD:
-
- Once you have the back panel removed, and using the big VFO knob as
- your guide (circuit board facing you, LCD display not facing you). The
- VFO knob should be on the left side. On the right side, in the lower
- right hand corner, you should see 2 distinct columns of chip resistors.
- On the board, they are NOT labeled, but I will draw the diagram below
- to help you. You cant miss these because there are 5 chip resistors in
- the left-hand row, and the right-hand row has 7 chip resistors. Above
- both rows is a solder-pad.
-
- a(::) h(::)
- g-
- i-
- b - j-
- c - k-
- d - l-
- e - m-
- f - n-
-
- Several chip resistors will be soldered in, depending on the model
- of your rig, and a solder pad is jumpered. Here are the mods per
- Alinco:
-
- a. 45-60 Mhz TX/RX - solder a 0ohm or jumper across location i
- b HF RX down to 30 Khz - remove the jumper m
- c. beyond just Mars Mod - TX/RX everywhere remove both jumpers c and e
- d. HF RX up to 35 MHZ - solder a bridge across pad a
-
- After performing the above mods, reassemble the unit.
-
- 7. DONT FORGET to reset the microprocessor (with the radio off, hold
- the F button and simultaneously turn the power on.
- All memories are wiped out, but the new bands are opened.
-
- I've tried all mods with my Alinco rig and can confirm they work. I am
- able to pick up business band communication in the 46 Mhz range (FM), and
- cordless phones in 46/49 range. It TX's everywhere now too.
-
- I do not take responsibility if you perform this mod incorrectly, and I
- am not responsible for your operation practice if you choose to illegally
- transmit out of band.
-
- Thanks and again, sorry for such a delay in getting this out here.
-
- 73 de Joe BV/N0IAT Taipei, TAIWAN (FORMOSA)
-
-