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Technology Stocks : LAST MILE TECHNOLOGIES - Let's Discuss Them Here -- Ignore unavailable to you. Want to Upgrade?

To: ynot who wrote (4996)	8/17/1999 3:11:00 PM
From: Raymond Duray	Read Replies (1) \| Respond to of 12823

Hi ynot, I set the system up using a couple of local wireless vendors. They proved to be far more knowledgable than the Radio Shack staff, and have special local knowledge which could prove crucial. You will need some special attention to the soldering of the Type "N" and mini-UHF connectors. A required non-standard whip built out of RG58U and a "N" on one end and mini-UHF on the other end is not available at Radio Shack. They do stock an RG8U cable in 50' lengths,with "N" type connectors here in Bend, however, the male/female thingy is perhaps problematic. Keep in mind that the typical dB loss for RG8U is on the order of -4.2dB per 100 L.F. The loss on RG58U is more like -14.4dB per 100' so don't be tempted to go cheap on the cable. The Yagi we selected can be found here: larsenet.com, not quite as conveniently as you might like, but it's buried in there somewhere. I believe Andrew and Maxrad have similar products. Be sure that you order the antenna to match cellular frequencies, i.e. 824-896Mhz. Pay attention to ohm matching and VSWR compatabilities. Take the phone up on the roof or whereever to assure yourself there is acceptable signal where you want to install the antenna. Roof structures, such as metal fireplace/furnace vents can cause echo problems, so beware. I found that contacting the tech at US Cellular was quite useful to determine base station location and specific things like just how tall their antenna tower is, (135' to be exact). Also, something that proved to be very informative is the CD version of MapQuest which allowed me to plot the terrain between my roof and the base station. Very clever software and highly recommended. Let me know if I can be of further assistance. Best, Ray