-Lots of people make electronics for use in hobby rockets. This is a brief
-list of only the things we've actually used ourselves.
-
-First off, Bdale and friends develop fully open hardware and software
-designs for rocketry avionics, under the name
-[Altus Metrum](http://altusmetrum.org).
-
-We also fly commercial altimeters in some projects. The cheapest off the
-shelf altimeter we've used and often recommend to beginners is the
-[Missile Works](http://www.missileworks.com/) RRC2-mini. At about $80, it
-gets the job done for simple barometric control of dual deployment. Note
-that while early versions had a firmware bug that we believe is at least
-partially responsible for Bdale's loss of his first L3 project, recent
-versions seem fine. For another $20, the
-[PerfectFlite](http://www.perfectflite.com/)
-[miniAlt/WD](http://www.perfectflite.com/catalog/MAWD.html)
-adds the ability to records the barometric flight altitude profile. Both
-of Bdale's L3 certs flew with one each of these two commercial altimeters,
-and we often use the MAWD as a backup for our
-[TeleMetrum](http://altusmetrum.org/TeleMetrum) units during test flights.
-
-The [BeeLine TX](http://www.bigredbee.com/BeeLine.htm) boards from Big Red
-Bee are radio tracking transmitters that just work. They require an
-[amateur radio](http://www.altusmetrum.org/Radio) license, but we think
-anyone flying big rockets can and should get one of those anyway!
-
-## Rocketry books we like ##
-
-Note that <i>Topics in Advanced Model Rocketry</i> is definitely not for
-everyone, as it's heavy on math and isn't a "how to" book at all! The
-others are great general books for learning about and gaining greater
-enjoyment from the hobby.
-
-<iframe src="http://rcm.amazon.com/e/cm?t=garbandgarb-20&o=1&p=8&l=as1&asins=0471472425&fc1=000000&IS2=1<1=_blank&lc1=0000FF&bc1=000000&bg1=FFFFFF&f=ifr&nou=1" style="width:120px;height:240px;" scrolling="no" marginwidth="0" marginheight="0" frameborder="0"></iframe>
-<iframe src="http://rcm.amazon.com/e/cm?t=garbandgarb-20&o=1&p=8&l=as1&asins=1412058104&fc1=000000&IS2=1<1=_blank&lc1=0000FF&bc1=000000&bg1=FFFFFF&f=ifr&nou=1" style="width:120px;height:240px;" scrolling="no" marginwidth="0" marginheight="0" frameborder="0"></iframe>
-<iframe src="http://rcm.amazon.com/e/cm?t=garbandgarb-20&o=1&p=8&l=as1&asins=0262632780&fc1=000000&IS2=1<1=_blank&lc1=0000FF&bc1=000000&bg1=FFFFFF&f=ifr&nou=1" style="width:120px;height:240px;" scrolling="no" marginwidth="0" marginheight="0" frameborder="0"></iframe>
+* [Topics in Advanced Model Rocketry](http://www.apogeerockets.com/topics_advanced_model_rocketry.asp) is definitely not for everyone, as it's heavy on
+ math and isn't a "how to" book at all! But, if you really want to understand
+ what's going on with higher performance models and/or inside the simulation
+ software we use when designing rockets, the material here will take you
+ a long way!