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Letters and emails should contain complete name, address and daytime phone number. Letters to the Editor are submitted on the condition that Silicon Chip Publications Pty Ltd may edit and has the right to reproduce in electronic form and communicate these letters. This also applies to submissions to "Ask SILICON CHIP" and "Circuit Notebook".

National Broadband
Network deja vu

With regard to the Publisher’s Letter in the November 2009 edition, concerning the proposed National Broadband Network, I despair that government fails to either acknowledge the expectations of those they are supposed to represent nor learn from past, bitter experience.

Here we have the advantage of 20-20 hindsight following the cable roll-out in the 1990s, yet government sails on heedlessly. The arrogance is simply astounding. Government anti-Telstra prejudice is more than obvious, yet Telstra is more than ably equipped, materially and technologically, to deliver a sensible solution. We, the mute many, are led by the monumentally uninformed few. What are we to do?

Gary Broughton,
Renmark, SA.

Many motorcycles do
have ignition advance

I wish to comment with respect to your response to A. T. of Mount Gambier (Ask SILICON CHIP, December 2009) that “Most motorcycles do not have ignition advance . . .”.

This is incorrect. Many motorcycles have at least RPM-related advance and many modern injected bikes have load and throttle position related advance as well. RPM advance is used for the same reason that it is used in cars, to compensate for the change in time that the piston takes to move a given distance with varying RPM and the relationship of this to the more constant time required for the fuel mixture to burn and generate maximum cylinder pressure after ignition.

David Boyes,
Canberra, ACT.

Gas power station could provide desalination energy requirements

The January 2010 Publisher’s Letter sets out the facts of our government’s spin doctoring in regard to the power supply for desalination plants. Sure, the wind generators can supply the energy requirement (MWh) for the desal plants over a year but would make no difference to the extra generation (or loss of reserve capacity) required to supply the desal plant (MW) as that has to be available continuously.

As one of my lecturers from the past once remarked “the amount of work you can do (read MWh) is almost infinite – it is your rate of working (read MW) that is important”.

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