Heathkit HM-2102 - Page 2

Page 2 [eeeern arse]
INTRODUCTION
The Heathkit Model HM-2102 VHF Wattmeter is a reliable
instrument for measuring the forward and reflected RF
power of a radio transmitting system in the 50 to 160 MHz
VHF range.
When the Function switch is set to the 25 watt or the 250
watt position, the maximum forward power indicated on the
meter helps you to tune your transmitter for maximum
efficiency. When the switch is set at the SWR setting, the
Wattmeter measures the reflected power and indicates on
the SWR scale the mismatch between the transmission line
and the load (antenna). This information is also valuable for
antenna adjustments or to determine the frequency range of
the antenna. The circuitry includes an internal calibration
facility for 2-meter and 6-meter bands.
This Wattmeter may be permanently installed in your
transmission line and needs no other power source. The unit
gives negligible insertion loss, however, it is designed only
for a transmission line of a 50 2 nominal characteristic
impedance. The small cabinet is designed for use at your
Operating position, but for convenience the detector
portion may be removed and mounted nearby.
Read the “Kit Builders Guide” for complete information on
unpacking, parts identification, tools, wiring, soldering and
step-by-step assembly procedures.
PARTS LIST
Check each part against the following list. The key numbers
correspond to the numbers in the Parts Pictorial (fold-out
from Page 3). To order replacement parts: Use the Parts
Order Form furnished with this kit. If one is not available,
refer to “Replacement Parts’’ inside the rear cover of the
Manual.
KEY PART PARTS DESCRIPTION PRICE KEY PART PARTS
No. No. Per Kit Each No. No. Per Kit
RESISTORS Other
. 1
1/2-Watt A2 143-1
Al 1-157 2 Coan uowviolee .15 a3 250 1
Al 1-44 1 2200 © (red-red-red) 15 ng louse ;
A1 1-105 1 10 kQ (brown-black- .15
orange)
Al 1-50 1 68 kQ. (blue-gray- 15
orange)
DESCRIPTION PRICE
Each
51 Q, 1-watt (green-brown- .20
black)
10 kQ precision 1.00
50 kQ control 1.00
200 kQ control with switch 2.75
(appearance may vary)