70cm - PA7MU

439.70MHz FM special receiver to receive my local repeater by JF1OZL (RX)
The reason of this production: In Japan, there are many local repeater in many towns. In my town we have KIDAMARI repeater. It receive 434.70MHz and transmit it in 439.70MHz.

A synthesizer-controlled 70cm-transceiver for 9600bd packet radio by DF2FQ (TX)
Until today, more than 10 years after the publication of the G3RUH-modem, there exists not a single radio from the large amateur radio manufactures, which is suitable for operation at 9600 bit per second with a sufficiently good quality.
What are the problems.

Packet trx Nokia MD59LS by PA3GCO
This is a description of the conversion of a second hand carphone into a packet transceiver in the 70 cm band. Needed are a controller and an rf switch circuit with pindiodes

Packet trx Nokia MD59LS by PA3GCO
This is a description of the conversion of a second hand carphone into a packet transceiver in the 70 cm band. Needed are a controller and an rf switch circuit with pindiodes.

2E0RHM'S
Moxon Anten-na for 433Mhz or 70cm Band

Simple 430 SSB transceiver by JF1OZLThis is my first 430-SSB-transceiver. This is very simple. This transceiver uses bilateral theory in many parts of whole configuration.

Home made UHF Yagi Antennas by ON6MU

70cm-Longyagis in 28Ohm-DK7ZB-Design by DK7ZB All Yagis in 28-Ohm-Technology, elements mounted with polyamid-clamps (Konni) or similar and 10, 8 or 6mm Diameter. Electrical details on the pages you see above, plots with "YO" from K6STI and "EZNEC +4" from W7EL.

J-POLE for VHF/UHF by ON6MU VHF/UHF J-Pole Vertical Antenna