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Technology Stocks : Nokia (NOK) -- Ignore unavailable to you. Want to Upgrade?

To: S100 who wrote (11848)	5/23/2001 8:00:00 AM
From: Wallace Rivers	Read Replies (2) \| Respond to of 34857

This has little to do specifically with NOK, but... I was wondering if anyone knows the manufacturers of accessories which allow hands free operation of cell phones? IMHO they will become mandatory shortly in virtually all US states. I don't know if there are any "pure plays" in that particular market, I would guess that manufacturers of these devices have these accessories as a small part of a much bigger pie. TIA, Wallace

To: S100 who wrote (11848)	5/23/2001 10:58:20 AM
From: 49thMIMOMander	Respond to of 34857

Functioning with min max temperature for the RF parts were tough to achieve in the bad old days, especially for car phones. My point that the car phones actually were -30 degree (C and F) in the morning, when the car had been parked outside in the winter, turned on an all the oscillators,etc were supposed to start and lock on to carriers, bias currents,etc. On the other extreme a handset on the dashboard of a car in south USA, close to the equator, the sun shines on it, is probably taking all components, battery above their max temp, especially if charged at the same time. My understanding is also that the charging circuitry is much more complex than earlier, faster charge times, measuring a lot of stuff, burping the battery,etc. Having too hot handsets sending too much spurious energy can drop other handsets on the same carrier (time slots) and neighbouring carriers. (the demand on going from full tx power to low enough residual for the next timeslot is not trivial, but the network should avoid the worst case situations when allocating them) Additionally Lion batteries always have that capability of exploding (remember the Toshiba laptop). So my guess is that it is just an additional "improvement", probably a must for GPRS, 3G, but already now "tested" in less critical normal phones. I would also guess it has been in phones for some time, but maybe not specifically mentioned in the manual?? Charging batteries is not a trivial thing either as there are more and more cheap,etc batteries on the market, as well as all the different technologies, and the demand on fast charging times has increased. Condensed water, humidity is another problem as well as more mechanical lint from the pocket in combination with fat from the fingers on the keys, creeping down to the circuitboard Ilmarinen Btw, the most temp critical component for the northern user is the display, goes blind at low winter temperatures, need to keep the phone in a warm inner pocket for a while. In the land of the 200,000 lakes, 80,000 islands dropping it in water is also common.. (one need replace the lake or salt water with destilled water and then dry the phone, remove battery as soon as possible, preferably before one drops it, and not turn on power until dry) the first 20 of the 100+ information functions nokiaheaven-uk.com #20 gives battery type, size, charge,use and temperature #69 gives internal temperature