F, MHz

21.0

21.175

21.35

28.0

28.35

28.7

G, dBd

7.9

8.1

8.2

6.5

7.3

8.1

F/B, dB

21.3

25.0

21.1

18.1

27.0

17.4

Z, Ohm

27.3 -j11.0

24.1+j1.6

20.1+j17.0

31.9+j6.4

35.8+j0.2

41.0+j5.0

OD 25-mm

Ref. 21

Ref. 28

Driver 21

Driver 28

Director 28.1

Director 21.1

Director 28.2

Director 21.2

Director 21.3

Length, cm

716

520

626

508

490

682

475

628

472

Spacing to Reflector 14, cm

0

170

210

315

420

516

620

880

950