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Meetinstrumenten - Frequentietellers

Klik voor vergrotingBCD readout frequency counter by GŲUPL
This frequency counter isn't the easiest to read, nicest, best frequency counter you can build. But if all you can find is a few 74HC390 and some ordinary 5mm red LED's, it does the job and is easy and fast to make!
http://www.hanssummers.com/bcdfreq.html

Klik voor vergrotingFrequency Counter by EI9GQ
This is the support page for the simple frequency counter project in Homebrew, RadCom October 2006. The original design used a gate time of one second which gives a count resolution of 1Hz. Maximum input frequency is about 50MHz. A VHF/UHF prescaler for this counter is described in Homebrew, RadCom February 2008.
http://homepage.eircom.net/~ei9gq/counter.html

Klik voor vergrotingFrequency Counter/Timer/Logic Tester by GŲUPL
This was my first frequency counter project. It includes quite a number of useful testing features which were very useful when building other projects.
http://www.hanssummers.com/counter.html

Klik voor vergrotingLCD Frequency Counter by GŲUPL
This frequency counter module is intended as a "digital dial" frequency readout for portable QRP radio tranceivers. It uses only six standard discrete logic IC's, i.e. no PIC or other microcontroller, no programming to be done, etc.
http://www.hanssummers.com/lcdfreq.html

Klik voor vergrotingRadio Frequency Counter by GŲUPL
This very tiny frequency counter was built to fit inside the front panel of a radio tranceiver. It now occupies pride of place in the front panel of my HF Receiver, alongside my panel mounting clock.
http://www.hanssummers.com/radiofreqcounter.html

Klik voor vergrotingSimple Frequency Counter by GŲUPL
This is an incredibly simple and cheap frequency counter with binary readout, based on the ideas of Onno PA2OHH. I built two versions: one Mk1 "prototype" for development and optimisation of component values, ...
http://www.hanssummers.com/sfreq.html

The NorCal Frequency Counter, FCC-1 by W3CD
The NorCal FCC-1 is a highly flexible frequency counter that incorporates features not found in any comparable unit. Its small size allows it to be incorporated into your favorite rig and your battery will hardly notice its modest current requirement.
http://www.norcalqrp.org/files/FCC-1_Manual.pdf

Klik voor vergrotingHF marker door PA2RF
De HF marker is een apparaatje dat een hoogfrequent grondgolf en een flink aantal harmonischen hiervan genereert. Met behulp van deze reeks marker-signalen kan eenvoudig een afstemschaal van een ontvanger of HF analyser gecalibreerd worden. In veel gevallen maakt dit simpele circuitje een duurdere frequentie teller overbodig.
http://www.home.zonnet.nl/laar60/1.htm

Klik voor vergrotingUniversal frequency counter & voltage meter by S56AL
For the purpose to be used with QRP transceivers I have developed some frequency counters with different types of displays (from simple 8 LED display to 2 x 8 character LCD), but the f-counter described on this page I have found to be the most useful.
http://lea.hamradio.si/~s57nan/ham_radio/fmtr/fmtr.html

Klik voor vergroting50 MHz frequency counter, voltage meter & SWR/PWR indicator by S56AL
This is a successor of the PIC16C71 4-digit LED f-counter & V-meter. Some hard to find parts used in the previous version, which are out of production for some time, has been omitted. A rather early PIC16C71 has also been replaced by 28-pin device PIC16F876.
http://lea.hamradio.si/~s57nan/ham_radio/fc_led_2/fcl2.html


Creatie datum : 19/04/2009 @ 22:01
Laatste wijziging : 17/09/2015 @ 23:52
Categorie : Meetinstrumenten
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