[The last renewal of this page: Nov. 5, 2010]

Even if it's inconvenient and its performance is very low, the AM let us feel the breathing of the radio propagation, and as the world porgresses and the technical innovation advances, I can not help to think its importance is getting larger for our amateures.
That is because I think that there is a starting point of amateur radio there, and from there, we can hear important messages for our amateurs.

My eager to have QSOs on AM getting back to our starting point got larger and larger day by day, and I purchased old radios of 1960's and have them restored to get the facility for AM operation again.
However, although its appearance is that of 1960's, I felt that I was not standing at the starting point of amateru radio yet, and started to build AM rigs by myself.

I had many failures, but anyhow, now I have some equipments that can be accepted for a practical use. Well, now the actual QSOs. I felt happy to find people who are interested in the same thing, and therefore I could make enjoyable QSOs in AM on 3.5Mhz, 14MHz, and 50MHz.

At the first moment in which I heard the AM signal of the station called me after more than 40 years, the sound got my old memory kept deep in my brain woke up, feeling the breath of the radio propagation, feeling my heart getting warm.
The S/N varies due to phasing (QSB), and feel phase distortion, got heavy QRM from both side of the tuned frequency, so it is not a "Loud in Clear", but that is why I can feel the large size of a scale of the radio propagation and dreamfulness of the life from it, when I imagine all the process of propagations that enabled a signal got arrived at me.

I am waiting for a day that we can meet in AM over the radio to come soon. Iam very happy to accept schedule QSO as well. Please contact me anytime.

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== AM radios for 3.5/14/50MHz at JR1MAF ==




The main rig is a series of equipment that I completed the homebrew in October, 2010, which are All tube all band (3.5-50MHz) AM/CW transmitter, All tube 3.5-4.0MHz single super heterodyne receiver, All tube VFO, and All tube crystal convertor for 7-50MHz.
The final tube of the transmitter is a 6146 and the output power is 10W.




This is also a homebrew portable radio. All tube AM/CW transceiver for 3.5/7MHz, and the output power is 5W. It is a decorative object of the shack rather than a radio for practical use, hi hi.




It is possible to QRV from old commercial made rigs.
TRIO VFO-1+TX-88A(Final:807/10W)+SP-5+CC-6(only for QRV on 50MHz doing a hard effort with this line)+9R59+SM-5




It is possible to QRV from old commercial made rigs on 50MHz also.
Nisshin-Denshi's SkyElite6 (Final:2E26/10W), TRIO's TR-1000 (1W), INOUE(ICOM)'s FDAM-3 (1W), TRIO's TR-1100 (1W), TRIO's TR-1200 (1W), National's RJX-601 (3W).




For 3.5MHz, homebrew rotary dipole (17m long)+ICOM's ATU AH-4 at 15mh, for 14MHz, homebrew 5 element Yagi at 22mh, and for 50MHz, homebrew 10 element Yagi at 24mh. (Both Yagi have been designed and optimized by Y.O.)



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