Ham Radio Maker

Sunday, 14 April 2019 21:46

Schematic of Step Attenuator

Written by
Rate this item
(0 votes)

Searched online to find some schematics of step attenuators and then edited schematic into QUCS.

Simulator result

DB

Volts Expected DB Calc DB
5    
4.46 1 -0.99
3.55 3 -2.97
2.52 6 -5.95
1.26 12 -11.97
0.403 22 -21.87
0.0675 42 -37.39

The +20 db step is off quite a bit.

Read 3657 times Last modified on Sunday, 14 April 2019 22:00
Ron

Leave a comment

Make sure you enter all the required information, indicated by an asterisk (*). HTML code is not allowed.

BITX20@groups.io Feed

Feed not found.
 

Buy RF Front End Board Kit for EU1KY Antenna Analyzer


David Richards Blog

Dave Richards AA7EE

  • Testing Out Different Headsets with a Crystal Set and Assembling a Sound-Powered Headset
    Before building Jim W4LF’s Hobbydyne™ crystal set, I put together an impedance matchbox, for matching the detector diode to a variety of different headsets and earphones, so that I could determine the best ones to use. The world of serious crystal set listening was new to me, so I did some reading up. To give […]
  • A Crystal Set Impedance Matchbox
    Growing up as the youngest of 4 boys, I was well positioned to receive all the hand-me-downs. Although that might sound as if I just ended up with second-rate stuff, that was not the case at all. I inherited a lot of great things from my older brothers. I couldn’t have cared less that they’d […]
  • A Little WSPR Beacon (Aren’t They All Little?)
    I first tried WSPR out in 2009, with a Signalink USB interface attached to my FT-817 and PC. For anyone interested in QRP and QRPp, the process of being able to decode a signal that is up to about 34dB below the noise level is quite fascinating. Morse code, sent by way of CW, engages […]

Frequency VFO synthesizer Microb v.4

Frequency synthesizer Microb v.4 (Microb v.4S)

This looks pretty awesome. Might have to get one.

Manhatten Construction si5351 VFO by AA7EE

si5351 VFO by AA7EE

This si5351 Manhatten style constructed VFO is really slick

uBitx v5 Un-boxing