changeset 29:6d7486db31cb

Quadband-ideas: Epcos M034F is also D1016
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 29 Jan 2020 23:59:50 +0000
parents 3799892b1a79
children 658010a51ff4
files Quadband-ideas
diffstat 1 files changed, 11 insertions(+), 9 deletions(-) [+]
line wrap: on
line diff
--- a/Quadband-ideas	Sat Jan 25 22:41:11 2020 +0000
+++ b/Quadband-ideas	Wed Jan 29 23:59:50 2020 +0000
@@ -29,18 +29,20 @@
 CMU200 instrument) has given us the necessary confidence boost with this
 particular way of implementing a quadband GSM MS.
 
-Epcos M034F
-===========
+Epcos M034F aka D1016
+=====================
 
 TI's Leonardo+ and E-Sample boards used a magic component made by Epcos (the
 canonical SAW filter manufacturer during that era) that was called M034 or M034F
-at the time of TI's designs in question.  Epcos later gave it a completely
-different name when they released it into volume production, thus the name that
-is needed in order to buy this part and that is physically marked on the
-component package bears to resemblance to M034 - but we will not be able to
-disclose this other name until we physically produce our first FreeCalypso
-hardware product with this quadband FEM in it, meaning until and unless someone
-pays for it.
+at the time of TI's designs in question.  However, the same component is also
+known by a completely different name of Epcos D1016; this new D1016 name is the
+only one under which this component can be bought for the purpose of building
+new quadband FreeCalypso hw, and the physical markings on the component package
+only say "EPCOS D1016", no mention of M034.  We (FreeCalypso) have no idea as
+to how and why this component got two completely different names.  Here is a
+picture of the part:
+
+https://www.freecalypso.org/members/falcon/pictures/Epcos_D1016.jpeg
 
 The component in question is an integrated quadband FEM (front end module),
 integrating the antenna switch and SAW filters in one component package, with a