Initial Testing - Ramsey Electronics HR-80 Instruction Manual

INITIAL TESTING OF YOUR HR-80:
You're now ready to power up and test your HR-80, but before you
begin take some time to sweep off your bench of any loose
component leads or solder splashes. A clean work area not only
makes testing less frustrating but also less prone to problems.
REQUIRED FOR INITIAL TESTING AND ALIGNMENT:
A known frequency standard in the 10MHz range such as:
• Crystal oscillator or,
• RF signal generator or,
• Grid Dip oscillator or,
• QRP transmitter such as a Ramsey QRP-80
• A Ramsey frequency counter CT-90 or,
• Any accurately calibrated receiver covering 80 meters
• At the least, personal familiarity with the 80 Meter Ham
band
And the following:
• Coil alignment tool ( can be homemade per directions) and
• 9-volt battery, antenna earphones or a small speaker.
Connect the following:
Fresh, 9-volt battery,
Earphone or speaker,
Antenna or at least a random length of wire.
Adjust the three controls to the middle of their ranges
Press the power switch "on". You should hear background noise
immediately, at least a gentle hiss.
See if the volume control does its job, vary it and notice how the
volume changes.
See if the RF gain control has some effect on what you hear.
If everything seems ok so far, feel the tops of the two IC's with
your finger. Neither should feel hot or warm
Slowly rotate the tuning control. At this point you may or may not
hear anything, since neither coil has been adjusted. If you do
HR-80• 13