What's a Radiotransverter?
The Radiotransverter is a telecommunications apparatus for general usage, which functions automatically and with adequate electronic protection, designed for the broadening of operative frequencies both in receiving and transmitting, on a two-way radio which functions with either analogical or digital modalities.
In 1999 the AEMME Telematica announced the launch of the first "AEMME all mode transverter FK-855", the realization of a project which was a breakthrough for the first time since the up until then used, classic transverter system. In fact, to work with a transverter one above all needs a transceiver predisposed for the specific use, which has a low-level TX output (100 mW typ) to send to the TX IN input jack for the transmission, together with the STBY connection to synchronize the RX / TX switching. To receive one needs to connect the RX IF output of the transverter to the usual antenna jack of the transceiver.
One might think that the use of such an accessory becomes difficult both for the complete absence of this predisposition on many modern transceivers, and for the fact that on those transceivers that offer this possibility, there is no effective way to adequately control the RF output level while it is transmitting. Moreover, there has always been the latent risk of destroying the transverter and the RF power final stage of the transceiver in the case of when there is an error in set-up, caused by an accidental pressing of the microphone’s PTT (!) therefore sending such radio-frequency to the antenna connector, connected of course to the RX IF output jack.
The "AEMME all mode transverter FK-855" which is what we call in brief terms a "radiotransverter", drastically simplifies the cables situation allowing you to connect to the transceiver with just one coaxial cable!
In this case, the transceiver through the antenna connection is connected to a perfect dummy load without standing waves where, like a real antenna, finds the signal to receive, while in transmission, the incoming RF power will dissipate greatly. Receiving we can normally activate and with precise results, attenuators, filters and anything else necessary, just as in transmission we can control the RF power level in base of the typology of the chosen emission, both within the analogical and digital modulation. This performance is obtained and is fully ensured thanks to the indispensable and exclusive electronic integrated protection which is provided right at the input stages of the radiotransverter without altering the power-handling capability of the dummy load (simulating the antenna) which the transceiver internally uses.