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To: Maurice Winn who wrote (21489)1/18/1999 12:48:00 AM
From: stealthy  Read Replies (1) | Respond to of 152472
 
All:

Note brief discussion of the PDQ on page 138 of the Feb Issue
of Red Herring; (scanned it briefly on newstand, don't have electronic version;)

Article compares its size, cost, internet surfing capability against couple of others including, pending 3COM VII version;

Bottom line seems to be approximately as follows:

- Estimated PDQ cost : ~ $ 400
- Estimated cost nearest competitor: ~ $ 800
- PDQ bulky in size/weight
- PDQ has more capable Browser

When someone gets copy of the electronic version, please post
the precise info.;

Thanks,

Stealthy



To: Maurice Winn who wrote (21489)1/18/1999 1:59:00 AM
From: SKIP PAUL  Read Replies (2) | Respond to of 152472
 
From ATI's 10K on QCOM shares owned:

INVESTMENT IN QUALCOMM

The Company owns 400,000 shares of common stock of QUALCOMM, a publicly held
developer of digital mobile communications technology. The Company also holds
warrants to purchase approximately 780,000 additional shares of QUALCOMM common
stock at an exercise price of $5.50 per share, expiring in November 1998.




To: Maurice Winn who wrote (21489)1/18/1999 10:28:00 AM
From: Clarksterh  Read Replies (2) | Respond to of 152472
 
Maurice - How about aerial length? Won't that be a problem with 820 MHz needing a long aerial and 4 GHz a short one?

You are correct that the expected frequency does affect the efficiency of an antenna, but thankfully it isn't as simple as a 4GHz antenna must be shorter than a 820 MHz one. If that were the case it would be somewhat impractical to be carrying around an AM radio (at 1 MHz or a wavelength of 300m) in my pocket. And you'd always be losing those 30GHz antennae. For a simple dipole antenna (in non-engineering speak, a straight wire) it is just important that the resonance not cancel itself. So from the mobile standpoint there are two different answers:

1) As long as you are frequency agile over only a small portion of your base frequency (e.g. 100MHz at 2.0GHz), it is probably not too important exactly how long your antenna is.

2) I suspect that a truly frequency agile mobile system will need two different antennae, but beyond that I can't say much since antenna theory is a black art with which I am only partially familiar.

Surprisingly, it is the basestations which will likely have a bigger issue, and that is probably why Walt brought up smart antennae. With a dipole being at a little bit of the wrong frequency will make the antenna a little inefficient, but in a directional antenna it will screw up the beamshape such that, for instance, the sectors in a basestation no longer overlap. Somewhat annoying for the user, but smart phased array antennae should help in this arena.

Hope this helps.

Clark