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100, 50 & 25KHzCrystalCalibratorMarker Generator
Description:A compact, fully built and tested Crystal Calibrator or Marker Generator with dual (AC & DC) power optionsThis modern take on the classic marker, provides 3, pinselect-ableoutputs to give 100KHz, 50 KHz or 25 KHz marks.Based around a high accuracy (5 ppm) 1 MHz crystaloscillator whose out put is then divided to providethe3 output frequencies as square waves.A variable output potentiometer allows the outputsquarewave shape to be trimmed if needed.Comprising a small footprintPCB(1.6\" x 3\" approx) it can be built into a small box or tin for bench/portable use, or is small enough to be retro fitted into a vintage (tube) radio.The marker can be powered by applying 9 -20V DCto thebarrel jack (2.1 x 5.5 mm center positive) or if mounting in a tube based radio, the unit can also be powered byapplyingthe heater AC voltage (6.3 - 7.5 V AC) to the blue screw terminal block. On boardrectificationand smoothing then feeds the 5 volt regulator.An RCA socket provides the output allowing connection to a radio, see photos for more information.Take a look at the Photos also as these are part of the product description.Please Note: PCB Color may vary from the photos, layout and features remain unchanged.
For a version that has a 1MHz output and outputs are switch selected, search for;Item number153992327219Whats included?1. Fully assembled calibrator pcb as described in listing/photo description.2. Link to our web site for the user guide
Questions?We always respond to product related questions, please ask before making your purchase if any details are unclear or need clarification. Remember the photos are also part of the sale description.
Other Details1. Shipping is free within the USA, Overseas buyers will pay shipping and import fees. We ship in one business day after receipt of full payment.2. Please make sure your ship to address is correct with , this reduces shipping delays and issues.3. Returns - start a return by accessing customer support on your account page, we generally offer 60 day return windows.4. We provide follow up technical support after sale if needed - we are only an email away.
About responseWe always leave positive response after shipping your item, no exceptions.Our products and service are all designed to give you the customer a 5 Star experience, however, we understand that sometimes things can go wrong (we are only human), and occasionally we may not meet our high standards. Before leaving less than 5 Star response, or Neutral/Negative responsefor us, please give us an opportunity to resolve the situation to your satisfaction first. We are only an email away and will always respond.
