====== Keyer / Paddle Model KR5 ======
{{kr5.jpg?150|}}

===== Description =====
The KR-5 provides low cost action usually associated with higher-priced instruments.  Power must be supplied by a 6 or 12 volt battery or an a.c. operated 6 or 12 volt d.c. supply.  Tension is pre-adjusted for optimum actuation force and return time.  The molded paddles fit the thumb and forefingers of all hand sizes.

===== Reviews =====
  *[[http://p1k.arrl.org/cgi-bin/topdf.cgi?id=62630&pub=qst|Recent Equipment, QST, 1973, December]] (Must be ARRL member and logged in to view.)

===== Specifications =====
  ***Time Base:** Characters start immediately when the paddle is actuated.  A momentary closure of the paddle is all that is needed to form a complete character.
  ***Weight Ratio:** To enhance the quality of transmission and to give it smoothness and rhythm at low speeds (below 25 wmp) a weighting factor is built-in.  This is controlled by one resistor and may be changed by the owner if a different factor is desired, such as continued high-speed operation above 35 wpm.
  ***Monitor:** No monitor is provided.  However, the [[AC2]] can be connected to an output jack located on the rear panel.
  ***Output:**  The output is handled by a reed relay.  Rated at 15 volt-amps, it will key all regularly used keying circuits.  The maximum keying voltage is 400 volts.
  ***Speed Control:**  A single control, tapered to give easy adjustment, varies the speed from 6 - 60 wpm.  Contact spacing is made on the front panel.  Anti-vibration locks are provided.
  ***Electrical:** The KR-5 circuitry is completely solid-state.  It employs one dual JK integrated ciruit, six silicon transistors, and seven silicon diodes.  Pwer required (not furnished) is 6 volts d.c. at 150 m.a. or 12 volts d.c. at 200 m.a.  An a.c. operated 6 or 12 volt d.c. source can be used.
  ***Mechanical:** The case is formed aluminum finished in durable backed enamel.  Plastic parts are molded high-impact Cycolac(r).
  ***Size:** 2" high x 4" wide x 6" deep.
  ***Weight:** 1 pound, 6 ounces.