The final speaker for the conference has been posted, Phil Horkin-AF7GY will be speaking about using line of sight (LOS) for MIMO applications. Here is a quicks summary of his talk:
As a brief explanation of the topic, Line of Sight (LOS) MIMO is rather new technology that uses multiple antennas on both the transmitter and receiver, much like conventional (Non-Line of Sight MIMO), but operates in the absence of multipath. Because of this distinction, there are constraints on how this technology may be used, requiring careful placement of both transmitting and receiving antennas, but where it is applicable, may be used to double or triple the link throughput without a linear increase in aggregate transmit power.
LOS MIMO has its greatest applicability to high data rate systems, either for fixed wireless, or with one node moving. While this will have somewhat limited applicability to amateur radio, our thought has been that this is an example of a digital system employing SDR and radio communications technology that many amateurs may find interesting.
Scott S., KD7VBS
Don Marshall, KE7ARH
Dave W. AE7TD
John Petrich, W7FU
Terence Chan KE7SFF
Puyallup in March 2016
December MicroHAMS meeting will be dinner only with some door prizes for participants!
New SDR Group – John Petrich, W7FU
John is making a special interest group (SIG) about Software Defined Radio(SDR).
Please stay tuned for another message to MicroHAMS real soon that talks about this.
We’ll meet three times a year.
Let’s compile a list of names of MicroHAMS who would be interested.
He’s open to ideas about the location to meet.
The first group meeting will be after the holidays.
Low end SDRs (in terms of price) have been of the most interest, generally.
SDR Links and Ideas from Scott Slack, KD7VBS
SDR# (SDR sharp)
RTL-SDR 2 has better frequency stability and can be modified for lower bands.
Hobbyist’s guide to the RTL-SDR by Carl Laufer
MHDC SDR Idea
We could have an early start session at MicroHAMS Digital Conference 2016 about getting started with SDR, say, 8:00 AM.
Bill Vodall WA7NWP
Seattle Maker Fair this weekend
SEP 26 Spokane Hamfest Washington state convention
SEP 26 Scouting Radio and Electronics Merit Badge and Tech License – contact Tim KK7TM@KK7TM.com
Bill Vodall — WSPR and his Raspberry Pi-based beacon!
Weak Signal Propagation Reporter (WSPR)
Bill’s website: http://wa7nwp.blogspot.com/
K1JT Author’s website: http://physics.princeton.edu/pulsar/K1JT/wspr.html
WSPR Network: http://wsprnet.org/drupal/
RADWAV SKyPi-40 XCVR Bundle: http://radwav.com/special.html
Amateur Logic episode discussing the Raspberry Pi WSPR shield
New and improved RTL-SDR available on Amazon for $20 http://amzn.to/1SLPS6F
New book: Hobbyist’s guide to the RTL-SDR by Carl Laufer http://www.amazon.com/gp/product/B00KCDF1QI/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00KCDF1QI&linkCode=as2&tag=book0674-20&linkId=XHRIQAZC3JVLUJWM
KIO hex beam antenna: http://www.k4kio.com/