FS: Discriminator Tap? New 2-Level and 4-Level FSK Decoder
 

New DDM-4 made by Texas 2-Way. Decodes POCSAG, 2- and 4-Level FSK,
Ham Radio Packet and Trunked Radio Data Channels. The DDM-4 sends
data to your computer which can be decoded by most decoding software.
Includes all original documentation. $50 includes Priority Mail
shipping. International orders okay with Buyer paying shipping
costs. PayPal or Postal Money Order.