The Hacker Radio Group
Internals and workings of the Hacker
17th September 2006
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With the rexine removed from the woodwork, strips of pipe insulation are stuck to the wood. This is a good replacement for the foam that disintegrates after time.
Foam_repalcment.jpg
Commonly used amp board on early 18 volt Hackers. Note the presets to adjust output stage bias and clipping symmetry. Hacker took fidelity very seriously!
A205_Amp_board.jpg
Rear view of the Rp10 showing Ediswan transistors and original capacitors. A screen usually covers the circuit board top right but has been removed for viewing.
Hacker_RP10__workings.jpg
Later type to tuner board and suggested alignment procedure(not confirmed).
T309_Tuner_section.jpg
The Rp17a is highly compact and the batterys tent to jam inside if they swell slightly.
Rp17A_internals.jpg
The Hacker Democrat internals along with the damage caused by flat batterys leaking acid.
Rp34_Democrat_internals.jpg
The Rp34 Amp board is similar to the other larger Hackers but without the tone adjustment components.
Rp34_Democrat_amp_board.jpg
The Helmsman electronics work from 12 Volts rather than the normal 18. The Batterys are 8 D cells mounted in the bottem of the radio below the amp board(not shown).
Helmsman_Rp36_internals.jpg
The internals of the Rp35 .
Rp35_Herald_internals.jpg
The internal view of the Rp20
Rp20_Herald_internals.jpg
The RP18 is almost the same as the internals of the Rp20, but with the addition of the VHF board.
Rp18__Sovereign_internals.jpg
The later Sovereign is totaly revised over the earler Rp18. Note the Celestion speaker fitted.
Rp25A__Sovereign_internals.jpg
The internals of the later Hacker's are a far cry from the older models. Where is the sticker thar says
Rp70_Ranger_internals.jpg