Low Noise Receiving Antenna for the 10- meter Band

Low Noise Receiving Antenna for the 10- meter Band

Credit Line: Radio #8, 1977: p.: 32.

By: Leonid Labutin, UA3CR

The receiving antenna was used for satellite receiving in the 10 meter Band. The antenna was installed at window on the 7- floor of the twelve store building. Figure 1 shows design of the antenna.

It is a variant of a helical antenna. For the form of the antenna it was used 1.8- m length of plastic tube in 15- mm diameter. Antenna has 34 turns of the wire in 0.6-mm (22-AWG) in each side of the helical dipole. Symmetrical transformer wound on a ferrite ring with sizes (OD x ID x H) 20x10x5- mm. It was used an RF ferrite ring. Each winding contains 2 turns. It was wound the same wire as it was used for the antenna. Antenna was connected to receiver through a 2.5- meter length of 75- Ohm coaxial cable.

The antenna provides very good receiving. Sometimes the receiving signals with the antenna were stronger to 12- dB compare to outdoor antenna for the 10- meter Band.

Leonid Labutin, UA3CR

Sometimes it was possible receive signals only with the low noise antenna and outdoor antenna at the times has received only strong noise.

73! de UA3CR

Figure 1 Low Noise Receiving Antenna for the 10- meter Band

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