Secondly, do a survey for interference. There's some utilities you can download as well with some limited support for PocketPC versions.
Free:
http://www.netstumbler.com/
http://www.boingo.com/download.html
Commercial:
http://www.airmagnet.com/
http://www.wildpackets.com/products/airopeek_nx
http://www.flukenetworks.com/us/LAN...er/Overview.htm
Thirdly, there are some other options you can do to reduce interference. Avoid reflective surfaces as they will bounce signals. Windows, mirrors, stainless steel, etc. UPSs nearby, microwaves, additional WAPs, Bluetooth, all can cause your own access point to "wait" for a free moment to send/receive packets..this delay causing a drop in signal strength.
You also should check if you have the same problems with a PC. If not, then there is definitely something wrong with your Pocket PC and/or Wifi Card. If not, then it's probably interference. Otherwise if you are unable to remove the causes of interference, your only choice may be to use the newer 802.11a wireless LANs. Most interference is in the 2.4GHz band which is what 802.11b uses. Although it's the most supported protocol, if you can't avoid intereference then what else can you do but go hardwire and run some CATs. You can avoid significant RF interference by using 802.11a's 5 GHz band. You'll also receive much higher throughput but the limited range may require additional access points depending on your desired coverage area.
Of course, you'd then also have to find an 802.11a CF card to purchase. It's easy to find the routers and PC Cards, but I dunno about CF if they even exist etc etc. I suppose you can google that.
JJB
