Powered by a 50 FARAD SUPER CAPACITOR. No batteries needed. Rechargeable by any USB source.
  *Recharge time is approximately 30 minutes. The  RED LED ( next to the USB jack ) will light up 
    immediately to confirm that the charger is supplying power to the unit. The GREEN LED will light up when the
    capacitors are fully charged. NOTE: Unlike batteries, Capacitors may be left on the charger indefinitely.

This is a Bob Beck  device similar to the BT5 . It is housed in a similar  4"x 2" x 1"  ( 100 x 60 x 25 mm ) plastic box. The BT11 has many advanced features not found in  the BT5. The core engine is identical to the BT5.

*  A Low Power Indicator LED is included....when this YELLOW LED lights up, charge the Capacitors.

*   There is a voltage booster / regulator.  This new and improved power supply method will maintain a constant 10             volts available to the circuitry all the way down to about 2 volts remaining in the Capacitor.

*   A 12 position Modulation  Frequency selector switch encompassing DELTA / THETA / ALPHA / BETA  and GAMMA 
    The selections are 0.5 / 2 / 4 / 7.83 / 10 / 20 / 30 / 40 / 60 / 70 / 80  and 111 Hertz

*  The Carrier "note" frequency is ADJUSTABLE from approximately 840 to 1000 Hz. ( see below for adjusting                suggestion )

*  A built in adjustable run time timer , ranging from approximately 5 minutes to 40 minutes. NOTE: THERE WILL
    BE NO OUTPUT UNTIL THE START BUTTON IN PRESSED.

*  A Blue LED indicates that the unit is running during the selected time period. The LED will 
    glow brighter with higher Power settings and will flash according to the Modulation setting.
    The Blue LED indicates that the BT11 is providing signal output during the selected time. It
     is normal for the LED to go out while earclips are connected to your ears. Located near the 
     ear clip jack.

*  The Start Button begins the Timed output.

*  Amplitude ( POWER  on / off) controls the strength of the output signal. Just like in the BT5 .

*  Furnished with standard ear clip ( same as supplied with  the BT5 ).

 Units are 100% professionally manufactured In the United States of America. 

WARRANTY STATEMENT: 

* ONE (1) YEAR LIMITED WARRANTY to original  DOMESTIC buyer.  Warranty void if physically damaged or from water damage.  INTERNATIONAL BUYERS ARE ENCOURAGED TO PURCHASE A PROTECTION POLICY FROM ALLSTATE: https://www.ebay.com/cdp/help/protection-plan/allstate.  The ear clips and accessories are not included in the 1 year warranty  . DOMESTIC  Buyer pays freight to return merchandise to us for repair. We pay freight to return to the customer. We will repair or replace at our discretion. We recommend International buyers purchase the offered Allstate Insurance plan, as the expense for the insurance will be cheaper than the freight to return the device for warranty issues and we offer NO direct warranty for International buyers..

Here is a clever way to set the Carrier signal to a given frequency: plug  a standard audio headphone in to the ear clip jack ( most head phones have a 3.5 mm plug ) . Set the Modulation to 0.5 Hz ( this will allow you to hear the Carrier for one second and then one second of silence, then repeated ). Turn the Amplitude to a comfortable level so as to be able to hear the Carrier frequency...it will be normal to only hear from one side of the headphone. Now , using your computer, go to any on-line signal generator site...such as https://www.szynalski.com/tone-generator/. Set the desired frequency and adjust your computer's sound system to a comfortable level.  Adjust the Carrier setting knob on  the BT11  to cause the same frequency in your headset,  as you are hearing from your computer....like tuning a guitar or piano with a tuning fork. 

To understand "carrier" and "modulation", imagine an organ key being played. For example middle C is 440 Hz. As long as the key is held down, the note  heard is the 440 Hz tone. This tone , in this example , is our "Carrier". Now the organist, being very talented, will hold the key down for ONE second, then release the key for ONE second, then repeat the pattern by holding down the key for One second. The interval from the initial pressing of the key until it is pressed again is HALF a HERTZ, or 0.5 Hz...it occurs in 2 seconds. This is our "modulation".
    Researching the published info on various CES devices reveals that there are many different carrier and modulation frequencies available. Bob Beck mentions in his Protocol Handbook that 1000 Hz is the "magic" number. There is a product on the market called "the Bumblebee". Their advert states that their carrier is 909 Hz. There are google results that indicate that the frequency to "awaken the pituitary gland" is 852 Hz. During our R&D, we were in communication with  previous customers, who suggested that the carrier be adjustable, as it could not be determined which one frequency would be the best....so we did...we made it adjustable from 840 to 1000, so as to please all the desired frequency settings. Only your research will determine where you choose to set it.
     The Power Knob is identical in circuit and function as the BT-5, which is detailed in The Bob Beck protocol Handbook at the top of page 73.
      The BT-11 is basically a BT-5 with added versatility. I hope this answers your questions.....

We are the Manufacturer. Ask about quantity discounts.

The HS Code is  8543.70.00.00 

The "Brass" label is printed label...NOT real brass....

The knobs shown in the pictures may vary , depending on availability at time of shipment. The larger knob
on the 12 position switch is the normal design.

It is normal to experience skin irritation from the ear clips in the course of using these type of devices. The irritation can be diminished by using pieces of cotton cut from a "facial cleanser make up pad" and soaked in salt water , then placed between the metal electrode of the ear clip and the user's skin. We include a "facial cleanser pad" with each shipment. 

Answers to many questions can be found in the BOB BECK PROTOCOL HANDBOOK, which is available as a free download in .PDF format.

WARRANTY STATEMENT: 

* ONE (1) YEAR LIMITED WARRANTY to original  DOMESTIC buyer.  Warranty void if physically damaged or from water damage.  INTERNATIONAL BUYERS ARE ENCOURAGED TO PURCHASE A PROTECTION POLICY FROM ALLSTATE: https://www.ebay.com/cdp/help/protection-plan/allstate.  The ear clips and accessories are not included in the 1 year warranty  . DOMESTIC  Buyer pays freight to return merchandise to us for repair. We pay freight to return to the customer. We will repair or replace at our discretion. We recommend International buyers purchase the offered Allstate Insurance plan, as the expense for the insurance will be cheaper than the freight to return the device for warranty issues and we offer NO direct warranty for International buyers.

ABOUT ME: 
 I am a semi-retired Electronics Engineer with over 50 years experience.  I hold several patents in electronic technology. A google search of Frank Jessup patents will give the details. You can purchase with confidence, knowing that I do know what I am doing. 


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