In message <199803041536.PAA13926@sp3at21.hursley.ibm.com>, Brian Jones writes >This may be [OT] but then again if the project turns out well I may >get asked to provide a PIC/LCD front end. > >A colleague is looking to build an RF probe to measure very small RF >voltages (mV or uV) in the range 2-30MHz for a college project. Any >ideas on how to do this fairly cheaply and accurately. Use a broadband amplifier, with a conventional RF voltmeter circuit. Is it a 50 ohm system? If it isn't, you will need a high-impedance buffer on the amplifier input. Leon -- Leon Heller: leon@lfheller.demon.co.uk http://www.lfheller.demon.co.uk Amateur Radio Callsign G1HSM Tel: +44 (0) 118 947 1424 See http://www.lfheller.demon.co.uk/dds.htm for details of my AD9850 DDS system. See " "/diy_dsp.htm for a simple DIY DSP ADSP-2104 system.