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FREE DPM6000 Power Meter Upgrade


Users of the popular DPM6000 Power Meter may have their unit upgraded FREE with new firmware (V2.40) and a minor mod in the log amplifier module to improve the frequency response flatness.

Units shipped prior to 9/1/17 only specified the frequency range (50KHz to 500 MHz) but not the frequency response. With this mod the frequency response can now be specified as: +/-  .5 dB from 50KHz to 250MHz for the FWD and REFL direct inputs.

To arrange your upgrade, please contact Audrie Crane from sales. We will pay shipping both ways (standard USP postage). We are committed to provide you the best possible products and thank you for your valuable feedback.



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Hantek 200 MHZ DSO available

Aurora, Oregon. After an extensive evaluation of portable digital scopes, taking into account performance, cost, and suitability for ham radio applications, PreciseRF is please to announce the selection of the Hantek 200MHZ DSO5202B Digital Storage Oscilloscope.

Our engineer Robert Kirkpatrick KI6HNA was so impressed with this scope that he purchased a Hantek DSO5202B for his own lab replacing an aging Tektronix scope.  Said Rob: “For hams wanting to equip their shack with a new modern scope, this scope is an ideal addition. Besides the usual scope functions, this scope includes a powerful FFT function, turning the scope into a digital spectrum analyzer ideally suited for the HF ham bands.”

Said Roger Stenbock of W1RMS. “With the exception of the Hantek 200MHZ DSO5202B, there simply is not a more economical scope out there that provides 200 MHz bandwidth and 1GSa/s for under $1000. The price is actually quite a bit lower….while other scopes in this performance range from Tektronix and Angilent are quite good, those scopes are priced out of the ham radio market…”

The Hantek DSO5202B Digital Storage Oscilloscope is a 200MHz scope that provides real-time sample rates up to 1GSa/s and equivalent sample rates up to 25GSa/s. In addition, it has 1M memory depth for better observation of waveform details. The 7 inch color TFT LCD Display with Windows-style interface and menus provide easy operation.

A PreciseRF exclusive is a NIST reference certificate. Each New Hantek scope undergoes a rigorous performance check with NIST traceable calibration instruments in our lab prior to delivery to you. This insures the scope meets published specs and characterizes the actual bandwidth and rise time achieved.


For product details and price visit


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Recommended Scopes

For HF measurements, a 50-100 MHZ scope will work very well. For two meter measurements a 200MHz scope is needed. We recommend portable scopes. They are simple and reliable and lower cost than bench top scopes. There are still some CRT scopes available new, but most manufacturers now produce only DSO (Digital Storage Oscilloscopes). While the CRT scopes are very easy to use, they do not provide for automatic measurements. However, they are well suited for many of the measurements ham radio operators need to make.


Our recommendation is the The Hantek 200 MHz DSO 5202B. It was especially selected for its high bandwidth, ease of use and suitability for ham radio measurements. We provide this scope in our packaged measurement offerings. It is a rugged reliable performer with a great user interface at an affordable price. By packaging this scope, you can save considerable money over buying the scope separately. This scope was especially selected for its high bandwidth, ease of use and suitability for TDR measurements. It is a great scope to have in your shack. It is well suited for use with our station monitors, two tone test generators, samplers, couplers and return loss bridges.


For those on a budget, older Tektronix scopes are available from on eBay. These scopes when new, costs thousands of dollars. They are very rugged and reliable.  Most of these scopes do not use a microprocessor and all controls are generally switches hard wired. These scopes can be had for bargain prices from $75 – $200. There are a number of service centers found on the internet which will repair and calibrate these scopes.

Tektronix model 465 100 MHz

Great scope! Produced by the thousands from the late sixties to the mid seventies. Considered by many the standard of portable CRT type scopes. They feature main and delayed time bases, excellent triggering, and very flat vertical amplifiers.







Tektronix model 475 200 MHz

High bandwidth version of the 465. Produced from the late sixties to the mid seventies. Used in high end computer service and some R&D applications. Will work well in HF and 2 meter measurements.




Tektronix model 2213/2215 60 MHz

Low cost, light weight, reliable. Used in the computer service industry and education. Produced from the mid seventies to late eighties. Uses ICs and discrete components, includes automatic intensity and TV triggering. The high efficiency switching power supply reduces weight and power consumption, although it can cause some low level noise to nearby receivers. Most control switches in the vertical and time base range setting are of the cam switch design, they are rugged and long lasting.





Tektronix model 2235/2236 100 MHz

Great scopes! The are a higher bandwidth version 2213 and 2215 models. They provide a high writing rate making low rep rate signal at fast sweep speed easier to view. They are characterized by low distortion and very flat vertical amplifiers. Also includes TV trigger and delayed sweep B triggering. Some even have digital volts, time and frequency measurement capability (2236). Produced from mid seventies to late eighties. They were and are still used in the high end digital service industries and some light R&D. These were considered the new standard following the model 465.


New scopes cost more. They provide very convenient automatic measurements. They are much lighter and thus more portable. Generally, sample rates should be greater than 1G samples. Many have FFT functions built in. This allows them to make frequency domain measurements and are handy as a poor man’s spectrum analyzer. They are available online and from the big electronic super stores. Both the Tektronix and the Rigol scopes are made in China.

The Tektronix version of the TDS 2000 series provides a lifetime warranty and NIST (National Institute of Standards and Technology) calibration certification. They also feature self calibration using internal amplitude and time standards.






Tektronix TDS2001C 50MHz – about $890

Tektronix TDS2012C 100MHz – about 1,300

Tektronix TDS2022C 200MHz – about 1,850







If you don’t need the NIST certification and guaranteed accuracy of the Tektronix scopes, the Rigol scopes provide the best new price and a similar feature set as the Tektronix scopes.

Rigol DS1052E 50MHz about $329

Rigol DS1102E 100MHz about $399

Rigol DS2202 200MHz about $1626