Welcome to the thread!
1) DMIC has no Point-To-Multipoint products in its portfolio... it has a broad portfolio of Point- -To-Point products that cover a range of data rates, distances, and operating frequencies. This allows them to sell their products in many different markets throughout the world; they have a top-notch sales force to do this. NTRO has one Point-To-Multipoint product and no other products; it is a far less diversified play but it happens to be in a niche that is particularly hot right now. There are many other companies in this niche, notably PCMS and privately-held Ensemble Communications; PCMS was first out of the gate with a P-MP product but it suffers under a heavy debt load and an erratic past performance... its other (P-P) products are only so-so... while Ensemble is the newest kid on the block with claims of the greatest technology. Recently, DMIC led a $25M round of financing for Ensemble which will be used to help bring their product to market; I expect DMIC will develop closer ties to Ensemble (including a possible acquisition of Ensemble) as Ensemble proves its technology and product in the marketplace.
2) DMIC uses high-order modulation (e.g., 64-QAM) to achieve high spectral efficiency in their point-to-point products... these products do not offer multiple-access (like P-MP products) so CDMA (code-division multiple-access), TDMA (time-division multiple-access), and FDMA (frequency-division multiple-access) really doesn't enter the picture. DMIC's products are occasionally used for "access" but, more often, they are used for "backhaul"... e.g., multiple-users in a building are connected by a traditional wired-LAN and this building/LAN is then connected to another building (which houses a wireless HUB connected to an ESS switch on a fiber-optic network) by a DMIC radio. But despite the allure of P-MP, its worth remembering that the biggest, fastest-growing market for DMIC's wireless products is still outside the US (e.g., in Latin America and Asia) where terrain and time-to-market make wireless an obvious winner as compared to traditional wireline.
3) Yes ADAP (formerly known as CMIC) is a competitor. In their former incarnation as California Microwave (CMIC) they were trounced by DMIC... they seem to be doing better now. I looked at them briefly last Spring but got distracted by my day-job and never bought a stake in them; given this stock price movement this past year, I now wish I did.
DMIC is, by far, my largest holding and we're not yet close to my price targets... so I'll keep holding.
Rob |