F, MHz

21.0

21.175

21.35

28.0

28.35

28.7

G, dBd

8.4

8.6

8.7

8.1

9.3

9.8

F/B, dB

24.8

25.1

18.6

13.4

20.4

14.3

Z, Ohm

25.9 -j9.9

28.6+j0.9

34.9+j13.1

26.8-j4.8

23.5+j0.4

49.8+j51

OD 25-mm

Ref. 21

Ref. 28

Dr. 21

Dr. 28

Direct. 28.1

Direct. 21.1

Direct. 28.2

Direct.

21.2

Direct.

28.3

Direct.

21.3

Direct.

28.4

Length, cm

700

530

677

510

496

647

490

645

478

624

464

Spacing to Reflector 14, cm

0

70

234

270

340

388

560

657

900

1022

1200