Table 3.

Transducer models and peak-to-peak voltages applied to transmitting transducers for measurements at 2.5 or 5 MHz intervals. For all frequencies of 20–72.5 MHz, the transmitting and receiving transducers are Panametrics (Olympus) matched pairs. For 10 and 15 MHz the transmitter and receiver are Panametrics, but the receiver model is different as noted in a table footnote.

Frequency (MHz)	Method 2 :TPX film		Method 1 : TPX sheet
	p-p volts	Transmitter model	p-p volts	Transmitter model
10	-	-	2.02	V311a
15	-	-	0.679	A319Sb
20	8.34	V358	8.48	V358
22.5	6.56	V358	-	-
25	7.11	V358	9.39	V358
27.5	8.16	V358	-	-
30	9.98	V358	13.36	V358
32.5	12.9	V358	-	-
35	19.9	V358	20.30	V358
37.5	19.5	V358	-	-
40	16.4	V358	36.60	V358
42.5	22.3	V358	-	-
45	21.3	V358	32.30	V358
47.5	28.5	V358	-	-
50	28.7	V358	32.70	V358
52.5	36.5	V358	-	-
55	40.8	V358	10.35	V358
57.5	49.9	V358	-	-
60	56.8	V358	11.58	V358
62.5	52.2	V358	-	-
65	66.6	V358	14.59	V358
67.5	76.4	V358	-	-
70	73.8	V358	20.40	V358
72.5	75.2	V358	-	-

^aDelta OOJWM4

^bPanametrics A313S