|
|
|
|
|
|
Model No. 1513: 1.8-54 MHz |
Model No. 1515: 20-200 MHz |
||
Picture: JM CHERRY
Drake directional, through line wattmeter, using printed circuits, toroids,
and state of the art techniques, permit versatile performance and unsurpassed
accuracy, yet at a lower cost.
In contrast to VSWR measuring devices of the past, Drake wattmeters are
frequency insensitive throughout their specified range, requiring no adjustments
for power or VSWR measurements.
Negligible insertion loss allows continuous monitoring of either forward or
reflected power for fast ac-curate tune up and checking of transmitter-antenna
performance.
Indirectly measure radiated power (forward power minus reflected power) and VSWR
by means of a plastic monogram included. Each wattmeter makes possible quick,
accurate adjustments of antenna resonance and impedance match, when placed
between transmitter and matching network.
High accuracy; ideal as laboratory instruments. Removable coupler allows remote
metering.
SPECIFICATIONS
|
W-4 |
WV-4 |
|
| Coverage |
1.8-54 MHz |
20-200 MHz |
| Line Impedance |
50 ohm resistive |
50 ohm resistive |
| Power Capability | 2000 W continuous | 1000 W continuous |
| Jacks, Removable Coupler | Two SO239 input and output connectors | Type N input and output connectors |
| Semiconductors | Two 1N295 power meter rectifiers | Two 1N695 power meter rectifiers |
| Accuracy | +- (5% of reading +l% of full scale) | |
| VSWR Insertion | Insertion of wattmeter in line changes VSWR no more than 1.05:1 | |
| Size-Cabinet: Size-Coupler: |
6"H
x 3.7"W x 4"D (15.3 x 9.4 x 10.2 cm) 2.3"H x 3.5"W x 2.5"D (5.7 x 8.9 x 6.4 cm) |
|
| Shipping-Weight: Shipping-Size: |
3
Ibs. (1.4 kg) 8 x 5.8 x 7" (20.3 x 14.6 x 17.8 cm) |
|
| CONTROLS | Front panel 4 position switch selects scale and reflected power. | |
August 1968 - p 45 - Drake W-4 Wattmeter
(Recent Equipment )
