Adept Instruments - Tracking and RDF Transmitters

The T400 transmitter pictured above is a general purpose Tracking Transmitter. It was originally developed as a model rocket tracking transmitter and available in two forms (modes), AM and CW. They were sold under the business name Adept Rocketry, and hundreds of them are now in service. Adept always required proof of the buyer's Amateur Radio license, and for this reason we were responsible for many new Hams getting their licenses. If you are a Ham and are interested in hobby or amateur rocketry, then please check out our other website. www.adeptrocketry.com

  • T400-M-LB. Transmit Frequency: 433.92 MHz. GP-23A Lighter Battery Included. Output Power is 8 mW, and Battery Life is 100 hours typical. AM version transmits AM burst tone signals. CW version transmits keyed on and off CW signals.
  • Measures .55" wide by .55" thick by 2.5" long. Antenna wire extends 6.125" from PCB.
  • Weight: 6.5 grams. Weight with battery installed is 14.9 grams (0.53 ounce).

The "M" in the model designation T400-M-LB is for "Module." The transmitter circuitry is sealed in a solid block module that is water proof. The "LB" is for "Lighter Battery." In the image below, Model T400-S-LB, the "S" is for "Sleeve." The circuitry is protected in a sleeve of shrink tubing. It is water protected, but not necessarily water proof.

 
 
  • T400-S-LB. Same frequency, power, and performance features as T400-M-LB.
  • Measures .52" wide by .56" thick by 2.6" long (8.6" with antenna).
  • Weight: 5.1 grams. Weight with battery installed is 13.5 grams (0.48 ounce).
T400-M-LB, AM or CW Transmitter - Price: $49.00

T400-S-LB, AM or CW Transmitter - Price: $44.00

Selection
Enter Call Sign, Required
 
Adept T400 Transmitters will be pre-programmed with the operating mode, AM (default) or CW, and with the customer's Amateur Radio call sign. When operating, the transmitter will periodically identify by sending the call sign in Morse Code. Most of the T400 Transmitters are programmable and can be reprogrammed.
Besides your receiver of choice, suggested receiving accessories for tracking the T400 Transmitters are:
ANT440-3 - three-element directional receiving antenna - $49.00

ANT440-7BP - seven-element directional receiving antenna - $85.00

CABBNC3 - accessory cable connects antenna to receiver, 3 feet long - $6.95

SMABNC - accessory adapter connector for some receivers - $4.95

Attenuators - Often necessary for tracking

Additional GP-23A Lighter Battery for Transmitter

MORE INFO and CART

MORE INFO and CART

MORE INFO and CART

MORE INFO and CART

MORE INFO and CART

MORE INFO and CART

 
You may be able to supply your own BNC to BNC cable, and possibly an appropriate antenna. The SMA to BNC adapter connector is necessary for use with most hand-held Receivers and Handy Talkies.

The Adept transmitters transmit on 433.92 MHz, and because of the power level and modes, and because the signals are of the repeating type, they do not fall under the Part 15 rules of the Federal Communications Commission, FCC. Most of our tracking transmitters have a power output of 8 mW. Some of the smaller ones have one milliwatt output. A license is still required. The transmit frequency falls within the 440 MHz Amateur Radio (ham) band. An Amateur Radio License is required.

When ordering a T400 transmitter, Adept requires proof of your Amateur Radio License with the order. Your call sign is sufficient. When operating, the transmitter will periodically identify by sending the call sign in Morse code.

The T400 transmitters have been tested at a distance of 15 miles line-of-sight, and the signals were still receivable and very useable. A range beyond 50 miles is common when used at high altitudes. This has been tested on high altitude balloon flights.

 

T400-CR1025-A     Programmable Transmitter      AM or CW     Price: $29.00
The T400-CR1025-A is our smallest and lowest cost programmable transmitter. It is shown here at actual size when viewed at 96 pixels per inch. It uses a single 3 volt CR1025 Micro Lithium Battery.

This light weight transmitter is ideal as an additional backup for tracking and finding an otherwise lost balloon, drone, etc. when all else has failed. It also serves very well as the fox during an on-foot fox hunt.

Selection
Enter Call Sign, Required
  • T400-CR1025-A. Transmit Frequency: 433.92 MHz. CR1025 Lithium Battery Included. The output Power is 1 mW, and Battery Life is 100 hours typical. AM version transmits AM burst tone signals. CW version transmits keyed on and off CW signals.
  • Measures .43" wide by .27" thick by 1.36" long. Antenna wire extends 6.1" from end.
  • Weight with battery installed is 3.0 grams (0.1 ounce).
 
 
Note: This web site and this page are still a work in progress. They are being updated frequently. Additional versions of the T400 Transmitter will be included shortly. Please visit this website and this page often.
 
 
www.adepinstruments.com       08/11/16

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