440_28ohm

	70cm - 28 Ohm Yagi Antenna

Type	Boomlength	Gain (435 MHz)*	F/B (435 MHz)
4 - Element	.35m	7.5 dBd	13 dB
5 - Element	.65m	9.1 dBd	16 dB
6 - Element	.85m	10.1 dBd	20 dB
7 - Element	1.00m	10.5 dBd	30 dB
9 - Element	1.50m	12.0 dBd	26 dB
10 - Element	2.00m	13.0 dBd	35 dB

	* Gain compared to Dipole

	4 Element - 28 ohm - .35m boom

Element	Position	8mm	6mm
Reflector	0 mm	336 mm	338 mm
Driven Element 10mm	80 mm	316 mm	316 mm
Director 1	190 mm	300 mm	305 mm
Director 2	330 mm	292 mm	297 mm

	5 Element - 28 ohm - .65m boom

Element	Position	8mm	6mm
Reflector	0 mm	334 mm	336 mm
Driven Element 10mm	135 mm	308 mm	307 mm
Director 1	260 mm	297 mm	301 mm
Director 2	460 mm	292 mm	296 mm
Director 3	630 mm	284 mm	288 mm

	6 Element - 28 ohm - .85m boom

Element	Position	10mm	8mm	6mm	4mm
Reflector	0 mm	330 mm	332 mm	334 mm	336 mm
Driven Element 10mm	120 mm	313 mm	312 mm	313 mm	311 mm
Director 1	325 mm	294 mm	298 mm	303 mm	308 mm
Director 2	420 mm	283 mm	287 mm	293 mm	297 mm
Director 3	645 mm	282 mm	285 mm	291 mm	297 mm
Director 4	850 mm	274 mm	276 mm	282 mm	288 mm

	7 Element - 28 ohm - 1.0m boom

Element	Position	10mm	8mm
Reflector	0 mm	342 mm	343 mm
Driven Element 10mm	105 mm	328 mm	328 mm
Director 1	155 mm	306 mm	310 mm
Director 2	305 mm	293 mm	297 mm
Director 3	520 mm	284 mm	288 mm
Director 4	770 mm	285 mm	289 mm
Director 5	960 mm	275 mm	280 mm

	9 Element - 28 ohm - 1.5m boom

Element	Position	10mm	8mm
Reflector	0 mm	330 mm	334 mm
Driven Element 10mm	125 mm	318 mm	318 mm
Director 1	220 mm	302 mm	305 mm
Director 2	400 mm	290 mm	294 mm
Director 3	625 mm	280 mm	284 mm
Director 4	875 mm	276 mm	281 mm
Director 5	1095 mm	273 mm	278 mm
Director 6	1300 mm	275 mm	280 mm
Director 7	1480 mm	266 mm	272 mm

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