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EIP 548A 10Hz - 40Ghz

Microwave Frequency Counter

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The 548A is an automatic CW microwave frequency counter featuring 1 Hz resolution.  It is complete with the 26 to 40 Ghz external mixer, top storage pouch, laminated quick reference instructions & a copy of the user manual.  This unit is in excellent physical and electrical condition and of course has the extension to work with the external mixer.   The Reserve on this item is 699.00

Features and Specifications

  •  Frequency range: 10 Hz to 26.5 GHz; 10 Hz to 100 MHz (band 1), 10 MHz to 1 GHz (band 2), 1.0 GHz to 26.5 GHz (band 3)
  •  Frequency resolution: 1 Hz
  •  Sensitivity: 25 mV (band 1); -20 dB (band 2); -30 dB to 12.4 GHz, -25 dB 12.4 GHz to     18 GHz; -20 dB 18 GHz to 22 GHz, -15 dB >22 GHz (band 3)
  •  Maximum input: +7 dBm
  •  Input impedance: 50 ohm (bands 2 & 3), 1 megohm (band 1)
  •  Standard time base accuracy: 10 MHz, <3 X 10-7th/month
  •  12 digit LED display
  •  10 Mhz External Reference in.
  •  Oven Oscillator (Option 05)
  •  Extended Frequency Capability (Option 06)
  •  GPIB (IEEE-488) interface (option 08)
  •  APC-3.5(f) connector (band 3), BNC (f) (bands 1 & 2)
  •  100, 120/220, 240 Vac 10%, 50-60 Hz operation
  •  Weight: 20 lb; Size: 89 mm (3.5 in) H x 425 mm (16.75 in) W x 356 mm (14.0 in) D




As our many customers will attest, we will do our very best to resolve any customer problems.  But our official policy is: 

  • All items sold are guaranteed against D.O.A. only. 
  • All claims must be made within 3 days of receipt. 
  • All warranties are void if the calibration / warranty seals are broken.

10Mhz GPS Locked Signal


Ascent Concepts and Technologies is a Research & Development Lab.  As a service to the companies and institutions we work with, we broker their excess equipment & acting as application specialists on their new equipment needs.  We are now offering quality used equipment to the public with the same level of professionalism and service.   Please feel free to email at thomasknox@ascentconcepts.com or call Thomas @ 1-303-554-0307 with any Technical questions.  Please feel free to email at waltwhite@ascentconcepts.com or call Walt @ 1-720-276-8288 with any Shipping or Logistical questions. We make every effort to evaluate and guarantee our equipment.  Although we do not provide NIST traceable calibration, we do have in house calibration equipment and will make every effort to test and verify performance on equipment we sell.  However we do not warranty any items shipped outside the United States. 

Shipping Policy

Buyer will pay $40.00 packing and shipping in the continental United States.  We will make every effort to ship within 24 hours of receipt of payment.  We ship with FedEx & UPS only. We will be glad to ship with other carriers using the purchasers shipping account.  Please contact us to make any special shipping arrangements. For shipping rate research, our shipping address is Boulder, CO USA ---- Zip Code is 80305.

Foreign buyers:  Unless special provisions have been made, you are responsible for making your own shipping arrangements and all costs related to customs, duties & special packaging requirements.  Please do not ask us to quote you international shipping rates. Use the address information above to research you own shipping rates. You can email waltwhite@ascentconcepts.com to get the packaging fee, package weight and size for your research. Items sold outside the USA are sold as is.  


 Payment Policy

We accept Credit Card payment through Paypal.   We accept Cashiers Check or Money Orders.


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The equipment shown is a representation only.  We often have multiple units in stock so please email us with your needs.  We have a large inventory and can usually find any test and measurement item in a short time frame.------Inquires info@ascentconcept.com