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SAM3, the best radio automation software out there!


IMPORTANT: Please use our new website to purchase our products. We have kept the old site here for nostalgic reasons and to maintain support of our old products! Below are links to appropriate product categories on our new site!

Accesories can be accessed here:
Transmitter accesories
Dummy loads
Coaxial cable and connectors
Mains power supply units
SWR and POWER meters
Wireless radio links

AM Transmitters (AM MAX)
FM Transmitters (Cyber Max+ and Cyber max micro)
FM kits (MAX PRO 3+, MAX PRO 4)
Antennas for FM radio (GP, dipole, log-periodic, 3/4 wave exterminator)
RDS encoders (RDS MAX 30)
Stereo encoders
Studio equipment
Electronics components (RF transistors, mica capacitors and much more)
Ham stuff
Solar powered transmitters

Also check our new guides here:
How to start
Coaxial cable
Audio equipment
New schematics
Wizards (formulas for radio)
Power supply

A KIT solution, an affordable professional unit

Frequency counter is one of the basic electronic measuring instruments. Many similar projects have been published in the previous years, but they all either lacked functionality, reliability or were simply too complex. This article presents a low cost frequency counter with a rich set of very useful functions (for example addition or subtraction of  intermediate frequency - 10.7MHz, 455KHz, 9MHz or CUSTOM) putting to shame even many professional and much more expensive models. Microcontroller does most of the work and keeps circuit simple. This is an easy to assemble KIT, including microprocessor and all parts, including mains transformer. A prescaler can be added to extend its usefulness to 4GHz or more (unit will display correct frequency with prescaler installed). Extensive instructions are provided with the unit.

Freqmeter, an example of enclosure (LCD option)


  • Display: LED or LCD (specify)

  • Display: LED or LCD (specify)

  • Freq. range: 0 to 1000MHz 

  • Power consumption: 2W

  • Input sensitivity: 200mV typ

  • Input sensitivity: 200mV typt 70~ C.  

Freq. meter - LED display
Freq. meter - LCD display

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