diff --git a/Analog-TV-Receiver.md b/Analog-TV-Receiver.md
index f775cd2..aa18a0b 100644
--- a/Analog-TV-Receiver.md
+++ b/Analog-TV-Receiver.md
@@ -1,6 +1,8 @@
-This analog TV receiver supports PAL only. This signal used to be widely adopted for television broadcasts.
+This analog TV receiver app currently supports wideband amplitude-modulated PAL only. This signal used to be widely adopted for television broadcasts.  The picture is assumed to be 625-line x 768-width interlaced but app reduces the image size to 52-line x 128-width to reduce processing overhead and to fit on the PortaPack screen.  The resulting 52x128 image is then stretched to 104-line x 128-width, and multiple frames are displayed on top of one another in lieu of de-interlacing (i.e. the first image may be just the odd lines, the second may be the even lines, and repeat).
 
-Due to hardware limitations, this app can only show black and white images.
+The app does not yet support sync signals, so frames may be misaligned both horizontally and vertically.  The picture can be aligned left/right by moving focus down to the screen area and turning the encoder dial, but will tend to drift over time.
+
+Due to hardware limitations, this app can only show black and white images.  This app does not yet support SSTV.
 
 ## References: