CW Broadcast

FM Broadcast Transmitters & Accessories

We have transmitters for LPFM, FM Translators and full power Broadcasters, all at affordable prices & with excellent service! 

CW Broadcast transmitters are available in two main groups. The lower power ES series have power levels from 50 to 1,050Watts.  The high powered PS series range from 1,500W to 5,000W and feature advanced internal control and monitoring systems that includes sophisticated setup and operating software (included).

Below:  The ES series (50W to 1050W)
CW Broadcast FM Transmitter Products - ES

                                    Below: The  ES Series Rear Panel
ES Series Back Panel

Buy with confidence! 
All ES series transmitters feature a 24 month warranty backed by CircuitWerkes!
FM1050ES Transmitter
Our ES Series transmitters offer output powers from 50 watts to 1200 watts.  Our lowest power transmitter, the FM50ES is a perfect solution for those breaking into FM broadcasting on a small-scale. Whether you are setting up a new radio station for a church, a school, or non-profit, this unit will help you get on the air quickly and cost effectively.

The ES Series can be used as a stand alone transmitter or translator. All models have front panel programmable FSK ID. They are perfect for small markets as a main analog transmitter, as well as for LPFM applications and can also be used as an emergency or back up at the largest stations.

Meets or exceeds all FCC standards**. The FM150ES and FM300ES are FCC type certified for use on LPFM stations.
FM150ES Data Sheet Product Manual
FM300ES Data Sheet Product Manual
FM500ES Data Sheet Product Manual
FM750ES Data Sheet Product Manual
FM1200ES Data Sheet Product Manual

CW Broadcast High Powered transmitters from 1.5kW to 5.0kW
Below:  A medium power 4kW Gamma Series Transmitter
PS Series Gamma Transmitter
Below:  Gamma series back panel when used as an amplifier.  Gamma units can be either amps or a complete transmitter (with internal exciter). Output connector options include 7/8" EIA flange (shown) or 7/16" DIN.
Gamma Amp Back Panel

Gamma Series 1500-5,000 Watts

CW_Broadcast Gamma
                  Transmitter The Gamma FM Series achieves up to a maximum of 80% efficiency with LDMOS based amplifiers. This results in a low cost of ownership. There is also additional cost savings resulting from the lower heat generation of these amplifiers. Less power being lost to generated heat requires reduced power requirement by HVAC systems to cool the transmitter building. The electric power savings in this new PTEK design is significant.

1000 watt power amplifier modules keep the GAMMA reliable and coupled with the hot pluggable power supplies ensures you stay on air.

Meets or exceeds all FCC standards**.
Gamma 1500 Data Sheet Product Manual
Gamma 2000 Data Sheet Product Manual
Gamma 2500 Data Sheet Product Manual
Gamma 3000 Data Sheet Product Manual
Gamma 3500 Data Sheet Product Manual
Gamma 4000 Data Sheet Product Manual
Gamma 4500 Data Sheet Product Manual
**All CW Broadcast transmitters exceed FCC emissions standards out of the box. 
Additional output filter modifications are available for customers requiring ultra
low spurious emissions.  Reduces out of band energy by an additional 20-25dB
(typically approx -100 dBu).    Call (509) 290-6652 or email us for details.


The full line of CW Broadcast transmitters include a complete remote control interface (for external remote controls) on the rear D-25 connector.  The RC interface includes basic operational analog I/O such as primary metering along with GPI inputs for On/Off and Raise/Lower.  Serial commands and serial data outputs are also available on the D-25.  Simple serial commands can be entered via a terminal program for basic transmitter commands.  Additionally, CW Broadcast offers an inexpensive line of internal and external Web-based network remote controls (see below) to enhance your control and monitoring capabilities.

  D25 Remote
                Control Interface Pinout

 Webserver Remote Controls:
                        Broadcast External RC

We produce Internal remote controls for the ES series.  Also available is an inexpensive universal external remote control that works with both the ES and Gamma transmitters.  The external remote control can be added in the field to any CW Broadcast transmitter.  Also works with PTEK Gamma or ES series transmitters made since 2013.

Main Page of the CW Broadcast Transmitter  Webserver

Product Manual

Audio Processing (Coming Soon)

Used  & Refurbished Transmitters:   From time to time we accept trade ins of working equipment from customers that want to upgrade to more powerful or newer transmitters.  Click here for our current list of used equipment available for direct sale.

Other Products:  CW Broadcast has strategic alliances with other broadcast equipment manufacturers.  We can offer you antennas, feedline, FM Combiners/Diplexers and other essential equipment for building out your transmitter plant. 
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