We Love 50MHz !

I have been very active on 6m Band.

I was stationed JE1BQE in 1971, and JA9QZH in 1976. There were many HAM Radio Operators to enjoy 6m Band in the 1970's, who were junior high school or high school students. I used to enjoy talking with them when I was a boy, too.

My licence in 1970's was Amateur 2nd-Class Radio Operator, Output power limit is 50 watts, that there was no difference between Amateur 1st-Class Radio Operator and Amateur 2nd-Class Radio Operator.

I upgraded my license to 1st Class in 1983. Recently, the output power limit is 1000 watts for Amateur 1st-Class Radio Operator, and is 200 watts for Amateur 2nd-Class Radio Operator.

I am an active member of SMIRK (Six Meter International Radio Klub).

6m Band is very Mysterious !

I have been enjoying HAM Radio from Overseas. I received JE1BQE/DL licence in West Germany in 1976, but 6m Band could not use 6m Band in Europe in 1970's. I operated HAM Radio from Saipan (KK6RT/KH0, KH0/JE1BQE) in 1992 for 4 days. I could not hear any signals on 6m Band during the first 3 days, but 6m Band opened between Japan and Saipan on the 4th day, and I could have QSOs with more than 200 stations. 6m Band was very mysterious.

I am looking forward to having a QSO with you from my other HAM Radio Stations, which are JD1BOO station on Ogasawara Island and HL3ZCG in Daejeon (Korea).

50MHz SSB/CW Home Made Transceiver Ver. 1

[General]

* Frequency Range ： 50.000 ～ 50.500 MHz

* VFO ： 1 Hz Step DDS

* Power Supply ：＋13.8 V DC

[Transmitter]

* Output Power ： 50 W

* Final Device ： 2SC2290 X 1

* Mode ： SSB / CW

* SSB Modulation ： Balanced Modulation

[Receiver]

* Circuit Type ： Double Superheterodyne

* 1st Intermediate frequency ： 14.000 MHz

* 2nd Intermediate frequency ： 11.2735 MHz

* LNA ： 2SK125 X 2 Grounded Gate Amplifier

* 1st Mixer ： Double Balanced Mixer (Quad Diodes)

* Selectivity ： 3kHz （SSB） / 500Hz （CW）

* Sensitivity (SSB) ： 0.1μV (S/N 10dB)

* Intercept Point 3 ：＋25dBm (By Pass LNA)

50MHz SSB/CW Home Made Transceiver Ver. 2