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STAMPER™ RF Modem - Wireless PBASIC Debugging & Programming

Ewave's STAMPER™ RF Modem is a wireless link optimized for wireless programming and debugging of the Parallax Basic Stamp processor. This product is a true "drop-in" wireless replacement for the serial cable normally used for programming and debugging of your PBASIC applications!

The STAMPER is available in two packages -- one (PN: STA-PRO) for general PBASIC Basic Stamp development and one (PN: STA-IFI) specifically for use with the PBASIC controller contained in the Innovation First Robot Controller.

Ordering Information

Acrobat PDF fileSTAMPER Data Sheet (194K)
Acrobat PDF fileSTAMPER User's Manual (500K)
Acrobat PDF fileEwave RF Modem Technical Manual (226K)

Upgrade Offer
Early adopters of the PBASIC Wireless Debugging package may upgrade their version 1.22 SCREAMER RF Modems to the latest version for small fee, or they may upgrade to the SuperSCREAMER RF Modem.

Features & Benefits
  • Protocols Supported:
  • Standard Features of the Ewave RF Modem family, which are:

    Common to All Modem Models:

    • Ewave's RF10K DualDSP modem core
    • FCC certified; no user license required.
    • Full duplex, allowing simultaneous transmission and reception of data.
    • Transparent, simple operation: Looks like a serial cable to your application.
    • Dynamic packetization of data, providing low latency while maintaining high throughput.
    • Commands may be sent on-the-fly (e.g., Transmit Power On/Off, Channel) or modem may be configured once and "locked" in the Data state for maximum transparency to your application.
    • Integrated antenna.
    • Operation from regulated 5V or unregulated ~7.2-10VDC (in which case the modem can supply 5V to another device); 3.3V also available.
    • Non-volatile (EEPROM) storage of user parameters (e.g., Channel, Baud Rate).
    • Status LEDs indicating Transmit and Receive Activity, Transmitter Power On/Off and Command/Data Mode.
    • 9600 bps sustained data throughput (higher data rate available if transparent CRC generation and checking is disabled).

    Optional (Varies by Modem Model):

    • 1, 5 or 40 user-selectable channels.
    • Programmable baud rates, up to 38.4K.
    • Transparent protection from errors and interference via 16-bit CRC (Cyclic Redundancy Code).
    • Packetization configurable via software parameters: Maximum Packet-Size Threshold and Next-Byte Wait Time.
    • High data reliability via transparent, automatic Retry/Acknowledge.
    • Support for RS232 "Break" conditions and RTS/CTS control signals.

Voltage (VDC) 5.0 regulated or 7.2-10 unreg.
Current (A) 140 mA, TX power ON
Current (A) 100 mA, TX power OFF
Sustained Data Rate 9600 baud or 1071 bytes/sec
Burst Data Rate 38.4 K baud
Range 300 feet typical
Frequency (MHz) 902-928

Ordering Information

This package may be ordered through the Innovation First web-site at this link:

[Jump to Wireless_Program_and_Debug_Radios in IFIrobotics' online store]

P/N Cost Photo Description To Order
STA-PRO $350.00 STAMPER Professional Pkg for the Rest of Us (NOTE: Parallax Basic-Stamp board not included) Click to Order
STA-IFI $350.00 STAMPER Professional Pkg for IFIrobotics Users Click to Order
STA-PAIR $340.00 STAMPER modem pair (mobile & base) Click to Order
STA-BASE $175.00   STAMPER modem (base only) Click to Order
STA-MOBL $175.00   STAMPER modem (mobile only) Click to Order
ANT-MOBL $10.00   Replacement antenna (mobile) Click to Order
ANT-BASE $10.00   Replacement antenna (base) Click to Order
PWR-9VDC $10.00 Transformer; AC Power 120V to 9VDC @ 200mA Click to Order
CAB-9M9F $7.00 Serial Cable - 6 foot DB9 male to DB9 female Click to Order
GEN-9M9M $5.00   Gender Changer DB9 male-to-male Click to Order
NUL-9M9F $10.00   Null Modem - DB9 male-to-female Click to Order
ADP-PALX $20.00   Remote Programming Adapters for Parallax Stamp Click to Order
ADP-IFIR $20.00   Remote Programming Adapters for IFI Robot Controller Click to Order
KIT-SER1 $10.00 Universal Serial Adapter kit Click to Order


  • This product was renamed from the PBASIC SCREAMER to STAMPER™.
  • PBASIC Wireless Debugging must be used with version 1.1 or later of Parallax's stampw.exe -- the Windows version of their Basic Stamp editor/downloader. DOS versions are not supported for Wireless Debugging.
  • PBASIC Wireless Debugging is not legal for use during the U.S. First Robotic Competition.


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