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Transceiver

It is the transceiver made also from whom at once if it is a its original work group. The SSB opportunity with comparatively high difficulty was suddenly made also in it. (Even if it says thing of 7 years ago)
The copy of the manufacture report which Mr. OM of two area added the part list, the illustration of parts, etc. from JF3BAF Mr.Yoshiura, and was intelligibly edited into me who do not have the money on hand of data radio-related [ sufficient ] soon after starting service those days was obtained, and this machine challenged the first transceiver manufacture. A report is the thing with which JE1UCI Mr.Tomikawa had the Minister of Posts and Telecommunications prize won in the its original work article contest of the ham fair for 1989 years. an output -- survey -- 215mW (it measures in the JARL electric power technology division) final -- the object for small signals -- transistor 2SC2053 is used The frequency which can carry out variable is 50.157MHz - 50.251MHz.
since it has not been come to hand by 1SV50 which suited the circuit diagram by the VXO system of the electronic tuning with a barricade cap, while there was stock by DEGIT instead, 1SV68 of the nearest characteristic was used -- although stability is somewhat bad, it is used enough (It may be such a thing if a barricade cap is used) IF -- 11.2735MHz -- pico -- the crystal filter of business is used Each unit made from the FCZ board is stuck on a land, it mounts in both sides, and the substrate is miniaturized. And it is ?

Original circuit Examination was made [ that it is various and ], and although it was very wonderful, it tampered with the place with which it can tamper personally, so that it might be easy to make also from a beginner. Since for change to have asked the amplified type using 2SC1815 since effectiveness of AGC は simplified first was bad, and it was hard to ask a gain to the whole few, it added one step of AF amplification by 2SC1815. It unites with meter which is also using the S-meter circuit, and is change of a gain. And it is even if it calls it what. It is adoption of SuperVXO. (After-mentioned)

When it is able to QSO by the transceiver personally made although transmission was completed, and why or reception was not completed, a substrate was not settled in a case or troubles were variously suffered when it assembled Joy It is equal, when a child is born, although it may be exaggerated. There was impression. This memorable its original work transceiver of No. 1 Although the LCH-1 type was named, present 2 type is unlikely to come out. HIHI

It is such touch when a lid is opened

FB design which a lid opens only by loosening four screws (imitation of JA1AMH Mr. Takada's pico DX series).

An upper lid is separable if the middle connector of speaker wiring is removed.

The mini hand microphone supplies the power supply from the main part by ECM. 4 pin microphone connector is adopted.

The circuit of IF frequency neighborhood is concentrating [ this field seen from the top ], and the back is arranged for AF, the electric power amplification circuit transceiver change circuit, etc

Super VXO circuit where the center connected the crystal (13MHz) of the VXO section and this frequency to two-piece parallel It could adopt and the large frequency variable range (about 94kHz) has been obtained even with cheap crystal (it is one-piece the thing of 250 yen by Satow electricity.), and the ready barricade cap. Although it may be が and the barricade cap characteristic, it is [ another ]. Super VXO circuit It seems that slight stability which is the feature has fallen victim. (HI from which frequency shifts little by little among QSO whenever it transmits and receives)

The inside seen from width

it has adjusted by the commercial tester, the its original work RF probe (it manufactures only for a capacitor and a diode), and HF transceiver IC-726.

Communication which exceeds 1,000km distance with the small output of this transceiver has been performed.

Bibliography Mobile ham magazine The January, 1990 issue
For [ which will be made on a holiday ] /its original work admission
50MHzSSB transceiver
Hisao Tomikawa Mr. work