This transmitter has been specially designed for CW (telegraphy) and AM 100 % modulated amateur transmissions. Its singular features respect to the precedent G 222 transmitter, are frequency greater stability and the possibility of «break-in» manipulation with V.F.O. circuits always turned on. A relative RF output power meter of new design is also provided in the antenna circuit, particularly facilitating RF output stage adjustment. In addition to the above, the following features — already present in the earlier model G222 — are worthy of consideration: 1) Quick and easy frequency range switching. 2) VFO type driving generator. 3) Tuned plate circuit of RF output stage. 4) «P-section» antenna coupling circuit, permitting a number of fitting facilities to match antenna impedance. 5) Quick switching from CW to AM operation, oy means of a single switch. 6) Two 807 tubes — push-pull connected — AF modulator, permitting 100 % undistorted modulation, controlled with built-in meter. It allows use of full available AF output power. 7) AF modulator pass-band particularly suited to speech transmission, thus ensuring maximum intelligibility even under the most adverse conditions. 8) Quick switching from transmission to reception by means of a single «RECEIV.-TRANS.» switch, acting simultaneously on antenna an B + supply circuits of both transmitting and receiving sets. Operation of both units is immediate, because tube heating is always mantained. 9) Iso-wave performance facility, by shifting a single switch — while receiving — which turns on the VFO. 10) Metering features: plate current, output stage control grid current, modulation deepness, and relative antenna output power, on two different ranges, depending on antenna impedance. 11) Single chassis assembly, enclosed in a modern and high styled metal cabinet.