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Ham Radio Workbench Podcast Episodes

HF Watt Meters

9/7/2021

3 Comments

 
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HRWB137-HF Watt Meters
With Dr. Doug Millar K6JEY

Doug Millar returns to HRWB to talk about HF Watt Meters
PERMALINK - https://www.hamradioworkbench.com/podcast/HF-Watt-Meters

Our Website - http://www.hamradioworkbench.com/
Follow us on Twitter -  https://twitter.com/hamworkbench
Contact us -  http://hamradioworkbench.com/contact
Connect with us on Facebook - https://www.facebook.com/groups/hamradioworkbench/
BrandMeister Talkgroup 31075 - https://hose.brandmeister.network/group/31075/

Today’s show is all about the Function and Selection of the Watt Meter
Our guest is longtime friend of the show Doug Millar

For a better listening experience please be sure to download Doug’s slides at:
https://www.hamradioworkbench.com/uploads/1/1/9/9/119903037/k6jey_wattmeter_talk.pdf

What’s on your workbench?

Doug
122Ghz Radios http://www.bay-net.org/uploads/1/2/2/7/122774721/k6ml-122ghzradio-baycon2018.pdf

Rod
Colin KC8DHY shipment of surplus circuit boards and components from an estate - thanks to the wonderful US Postal service
Station controller - New hardware arrived here in Canada - Thanks George, Time to be a Beta Tester!
Amateur Extra -I got my US Amateur Extra last week - Whew!


Vince
The desoldering tool has arrived Hakko FR-301 https://www.amazon.ca/gp/product/B07BFVFMS9/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1 
Morse Tutor Kits almost ready to ship
https://ve6lk.com/morse-tutor-kits/ 


George
Station controller - New hardware arrived
     3 Beta testers (Rod, Mark, Mike)
Macro program
     Controls DCN, Icom, Yaesu (new & old)
New HRWB DC power strip kit
     1 in / 5 out, fused, power LED


If people want to get in touch with you, what is the best way?

Doug drzarkof56@yahoo.com 

Rod Twitter @VA3ON
YouTube https://www.youtube.com/Cycle25
www.cycle25.ca

Vince Twitter @VE6LK
www.ve6lk.com

George    DMR TG 31075
3 Comments

RF Test Equipment

8/10/2020

0 Comments

 
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​Today on the workbench, We talk test equipment with Doug Millar K6JEY.

Our Website - http://www.hamradioworkbench.com/
Follow us on Twitter -  @hamworkbench    https://twitter.com/hamworkbench
Contact us -  http://hamradioworkbench.com/contact
Connect with us on Facebook - https://www.facebook.com/groups/hamradioworkbench/
BrandMeister Talkgroup 31075 - https://hose.brandmeister.network/group/31075/

PERMALINK https://www.hamradioworkbench.com/podcast/rf-test-equipment

QSO Today Viurtual Ham Expo 2020 - https://www.qsotodayhamexpo.com/

​Doug on QSO Today - https://www.qsotoday.com/podcasts/K6JEY
hrwb-test-gear-for-hams.pdf
File Size: 4564 kb
File Type: pdf
Download File

0 Comments

Test Equipment with Jason from Siglent

3/12/2019

1 Comment

 
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This week, Jason Chonko from Siglent America joins us to talk about getting your first piece of bench test equipment.  We also explore signal generators, RF test gear, and exciting things coming from Siglent. Siglent will appear at the 2019 Hamvention.

Our Website - http://www.hamradioworkbench.com/
Follow us on Twitter - https://twitter.com/hamworkbench
Contact us for feedback and ideas - http://hamradioworkbench.com/contact
Connect with us on Facebook - https://www.facebook.com/groups/hamradioworkbench/
BrandMeister Talkgroup 31075 - https://hose.brandmeister.network/group/31075/

Save $100 on the Digilent Analog Discovery 2 Package by using code “HamRadioWorkbench2019” in your cart prior to checkout - https://store.digilentinc.com/ham-radio-workbench-bundle/

Novexcomm IC-7300 Rack Mount Panel - https://www.ebay.com/itm/3U-RACK-PANEL-FOR-ICOM-IC-7300-WITH-SPEAKER-AND-OPTIONAL-30-AMP-POWER-SUPPLY/382552443289?hash=item5911e70999:m:mJFFPuWcLZBPDsKsT1PTRZw&frcectupt=true

Novation Circuit Synth/Groovebox - https://novationmusic.com/circuit/circuit

EEVBlog Siglent VNA Teardown Video - https://www.youtube.com/watch?v=HxBcQDooAYs

Siglent 200mhz 2 channel Oscilloscope SDS1102X-E (under $400!) - https://www.siglentamerica.com/digital-oscilloscopes/sds1000x-e-series-super-phosphor-oscilloscopes/

Siglent 100mhz 4 channel Oscilloscope SDS1104X-E - https://www.siglentamerica.com/digital-oscilloscopes/sds1000x-e-series-super-phosphor-oscilloscopes/

Siglent DC Power Supplies - https://www.siglentamerica.com/power-supplies/

Siglent Signal Generators - https://www.siglentamerica.com/waveform-generators/

Siglent YouTube Channel - https://www.youtube.com/channel/UCJTMHHYrlZtYZ7v9L4QVPSQ
​


1 Comment

Spectrum Analyzers

6/19/2018

2 Comments

 
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Jason Chonko from Siglent America is joined by Nick KN6NK to give an in-depth intorudction to spectrum analyzers.  We talk about the specs, features, and engineering that make up this handy piece of frequency-domain test equipment.  We also explore several common spectrum analyzer uses such as filter and cavity tuning as well as radio purity evaluation.

Our Website - http://www.hamradioworkbench.com/
Follow us on Twitter - https://twitter.com/hamworkbench
Contact us for feedback and ideas - http://hamradioworkbench.com/contact
Connect with us on Facebook - https://www.facebook.com/groups/hamradioworkbench/

Save $100 on the Digilent Analog Discovery 2 Package by using code “HamRadioWorkbench2018” in your cart prior to checkout - https://store.digilentinc.com/ham-radio-workbench-bundle/

Siglent America - https://www.siglentamerica.com/

Siglent SSA3000X Series Spectrum Analyzers - https://www.siglentamerica.com/spectrum-analyzers/

EEVBlog Interview with Eric Qin Founder and CEO of Siglent - https://www.youtube.com/watch?v=v9M397sUkEA

Spectrum Analyzer Do’s and Don’ts - https://www.youtube.com/watch?v=E6P-R0C9ro0

Sweeping an Antenna for Return Loss - https://www.youtube.com/watch?v=X50qybdiLuk

LXI Tools https://github.com/lxi-tools/lxi-tools

​SSA3021X/SSA3032X reviews:
EEVBlog review https://www.youtube.com/watch?v=gkLciTsjGZg  teardown https://www.youtube.com/watch?v=-8fr_otW0q4
Block diagram in teardown at 27:05 https://youtu.be/-8fr_otW0q4?t=27m5s
The Signal Path http://thesignalpath.com/blogs/2017/09/20/siglent-ssa3032x-9khz-3-2ghz-spectrum-analyzer-tg-review-teardown-experiment/


2 Comments

Digilent Analog Discovery 2

1/16/2018

0 Comments

 
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​When working with circuits diagnosis and design become nearly impossible if you can’t see what’s going on.  Digilent has created a super portable and affordable instrument that when combined with its Waveform software suite, it delivers to its users a bench worth of test and measurement instruments in a USB device slightly larger than a deck of playing cards.  George has been a huge fan of this device for a while and suggests that it’s a great option for those who need a lot of capability on a budget or those who need a lot of instruments in a portable package.  Join Kaitlyn Franz, Instrumentation Product Manager for Digilent, as she introduces us to the many functions of the Digilent Analog Discovery 2.

Please take a moment and take our listener survey!  http://survey.hamradioworkbench.com/

Starting in February 2018, you will no longer get Ham Radio Workbench in the Ham Radio 360 podcast feed.  Please find us in your favorite podcast app and subscribe to Ham Radio Workbench.

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Our RSS Feed for any other Podcast app - http://workbench.libsyn.com/rss

The Workbench Podcast is now the Ham Radio Workbench Podcast!

We have a new website - http://www.hamradioworkbench.com/

We have a new Twitter account - Please follow us! - https://twitter.com/hamworkbench

Contact us at workbench at our new domain or by using our new contact form - http://hamradioworkbench.com/contact

New Satellite - Fox-1D / OSCAR-92 - https://www.amsat.org/fox-1d-launched-designated-amsat-oscar-92/

Fox-1D / OSCAR-92 Telemetry - http://www.amsat.org/tlm/health.php?id=4&port=

FoxTelem Satellite Telemetry Software - https://www.amsat.org/foxtelem-software-for-windows-mac-linux/

SatNOGS (Satellite Networked Open Ground Station) - https://satnogs.org/

Kenneth Finnegan W6KWF (@KWF) gives a talk on Amateur Radio and the

Internet of Things - https://www.youtube.com/watch?v=Dt8N933BIBQ

Nick Kartsioukas KN6NK (@ExplodingLemur) appears as a guest on the

Embedded FM Podcast to discuss Information Security - http://embedded.fm/episodes/229

Winter Field Day 2018 - https://www.winterfieldday.com/

SharkRF OpenSPOT Server Software - https://github.com/sharkrf/srf-ip-conn-srv

NW Digital Radio 6 codec board - https://www.kickstarter.com/projects/985312845/6-channel-usb-ambe-transcoder-for-digital-voice-sy

Convert dBm to Watts - https://www.everythingrf.com/rf-calculators/dbm-to-watts

Kaitlyn Franz, Instrumentation Product Manager for Digilent - https://blog.digilentinc.com/author/kaitlyn/

Digilent YouTube Channel for tutorials and help - https://www.youtube.com/user/DigilentInc/featured

Analog Discovery 2 Product Page - https://analogdiscovery.com/

Digilent Instruments - https://store.digilentinc.com/all-products/scopes-instruments/

Digilent Forum - https://forum.digilentinc.com/
0 Comments

Precision Frequency References

9/12/2017

1 Comment

 
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Curious about what the “10 MHz” connector on the back of your test equipment or radio is?  Interested in calibrating an SDR to reduce tuning error?  Do you want an accurate frequency source for tuning radios?  How about a super accurate sense of what time it is?  This week, Dr. Frank M Howell K4FMH joins Jeremy and George to talk about GPS Disciplined Oscillators and Frequency references for your workbench.

Hurricane Watch Net - https://www.hwn.org/

Icom IC-9700 - http://qrznow.com/icom-ic-9700-vhfuhf1-2ghz-prototype-transceiver-shown-at-tokyo-hamfair-2017/

Circuit Board Printer - Voltera - https://www.voltera.io/

Circuit Board Printer - BotFactory - https://www.botfactory.co/page/homepage
KF7IJZ’s Workbench
  • Remote Airspy Server w/ ASUS Tinkerboard
    • Airspy SDR Receivers
      • Airspy R2 - 24Mhz - 1.8Ghz 10Mhz Bandwidth SDR Receiver - $169 - https://v3.airspy.us/product/a-airspy/
      • Airspy Mini - 24Mhz - 1.8Ghz 6Mhz Bandwidth SDR Receiver - $99 - https://v3.airspy.us/product/a-airspy-mini/
      • SpyVerter HF Converter - $49 - https://v3.airspy.us/product/a-spyverter/
    • ASUS Tinkerboard
      • I Used a Tinkerboard because I had one, but I would recommend an ODroid device instead - http://www.hardkernel.com/main/main.php
      • Tinkerboard Hardware - https://www.asus.com/us/Single-Board-Computer/Tinker-Board/
      • Tinkboard Linaro Linux Distro available on that page under Downloads
      • Armbian Distro for Tinkerboard - https://www.armbian.com/tinkerboard/
      • Good review of Tinkerboard - https://forum.armbian.com/index.php?/topic/4614-asus-tinker-board/
    • Software
      • Spyserver for ARM 32 Bit - http://airspy.com/download/
      • Airspy on ARM Instructions (do this first) - http://photobyte.org/running-spyserver-raspberry-pi-3/
  • Arduino MIDI Mute Button
    • Hardware
      • Adafruit Pro Trinket 5V - https://www.adafruit.com/product/2000
      • Adafruit 24mm LED Arcade Buttons - https://www.adafruit.com/product/3430
      • Adafruit MIDI Jack - https://www.adafruit.com/product/1134
    • Arduino MIDI Wirting and Communication Guide - https://www.arduino.cc/en/Tutorial/Midi
    • Use “Debounce” Example code from Arduino IDE
    • Arduino MIDI Message Guide (code is deprecated, but message formats are relevant)- http://little-scale.blogspot.com/2011/08/simple-examples-of-sending-midi-data.html
    • Eagle Best Practices
      • 1/16” Margin around the edge of the board
      • Avoid acute angles on circuit traces
      • Vias should be at least 0.04” in size
      • Traces should be at least 0.03” in size
      • Keep good space between signal lines and ground planes/traces
  • Other Links
    • Perseus SDR - http://microtelecom.it/perseus/
    • SDR Console Software - http://sdr-radio.com/Software/Download1/Download
    • RF Space - http://rfspace.com/RFSPACE/Home.html
    • Cloud SDR - http://www.cloud-sdr.com/
    • SDR# Tuner from Mouse - https://www.rtl-sdr.com/building-a-tuning-knob-for-sdr/

KJ6VU’s Workbench
  • RIDGID Toolbox for KX3 Project - http://www.homedepot.com/p/RIDGID-22-in-Pro-Organizer-Black-222571/205440492
  • BBC Micro:Bit - http://microbit.org/

K4FMH’s Workbench
  • Trimble based GPS GPSDO 10Mhz / 1PPS Clock - http://www.ebay.com/itm/Trimble-GPS-Receiver-GPSDO-10MHz-1PPS-GPS-Disciplined-Clock-sine-and-square-wave-/252162780444?hash=item3ab612ad1c:g:o2IAAOSw1WJZHdMY
  • PCTEL GPS (L1) 26dB Timing Antenna Kit - http://www.ebay.com/itm/PCTEL-GPS-L1-26dB-TIMING-ANTENNA-KIT-GPS-TMG-26N-W-Mount-Kit-/263159662203?epid=1209248913&hash=item3d4589c67b:g:KU0AAOSw8gVX3BPx
  • Six Output Video Distribution Amplifier - Sigma Electronics VDA-100A - https://www.ebay.com/sch/i.html?_odkw=SIX+Output+Video+Distribution+Amplifier+Sigma+Electronics+VDA-100A&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.XSigma+Electronics+VDA-100A.TRS0&_nkw=Sigma+Electronics+VDA-100A&_sacat=0
  • Leo Bodnar Precision 2 Output GPSDO (450Hz - 800Mhz) - https://v3.airspy.us/product/lb-gpsdo-1/
  • HP 3586A Selective Level Meter - http://ve2zaz.net/HP3586_AD5962/HP3586_AD5962.htm


K4FMH’s Blog - http://k4fmh.com

WWV - https://www.nist.gov/pml/time-and-frequency-division/radio-stations/wwv

EEVBlog Frequency Reference Videos
Rubidium - https://www.youtube.com/watch?v=zPPB7ZzO_TA
Cesium - https://www.youtube.com/watch?v=3yTL06ZU5SU

Lady Heather Disciplined Oscilator Control Program - http://www.ke5fx.com/heather/readme.htm

U-Blox GPS Receivers and Timing Devices - https://www.u-blox.com/en

Gerry Sweeny on YouTube - https://www.youtube.com/user/gezzasw

WGUR “The Noise” - http://www.gcsuradio.com/

K4FMH on Linux in the Ham Shack - http://lhspodcast.info/2015/10/lhs-episode-155-interview-with-frank-howell/

​K4FMH on Twitter - https://twitter.com/frankmhowell
1 Comment

Digital Oscilloscopes

9/13/2016

0 Comments

 
Continuing the conversation with Alan Wolke W2AEW on Oscilloscopes.  This time we focus on digital oscilloscopes and how they compare with analog oscilloscopes.

Alan W2AEW's Test Equipment YouTube Channel: https://www.youtube.com/user/w2aew

Alan W2AEW on Twitter: https://twitter.com/AlanAtTek

Packtenna:  http://www.packtenna.com

Pacificon 2016:  http://pacificon.org

Don W6GPS Videos on the Kenwood TH-D74:  https://www.youtube.com/user/w6gps

Interview with Don W6GPS on the Kenwood TH-D74:  https://www.youtube.com/watch?v=IIlLnll6TGc

TH-D74 Manual (from Japan) Here

KF7IJZ’s Raspberry Pi Cluster Setup Part 2:  https://www.youtube.com/watch?v=eZ5uX-JJbyY

Einstein@Home:  https://einsteinathome.org
0 Comments

Analog Oscilloscopes

8/30/2016

0 Comments

 
Alan Wolke W2AEW from Tektronix joins us to talk Oscilloscopes. Alan is a field application engineer for Tektronix, the world's most well-known oscilloscope maker. He also has a YouTube channel that is chock full of great information for those wanting to better understanding oscilloscopes and test equipment in general. Alan joins us for a two part session to deep drive on oscilloscope features and applications. In part one, we introduce the oscilloscope, what it's used for, some introductory concepts, and some comparisons of analog and digital scopes. We also discuss probe quality.

Alan Wolke W2AEW
Youtube - https://www.youtube.com/user/w2aew
QRZ - http://www.qrz.com/db/W2AEW
Twitter - https://twitter.com/alanattek

Rigol DS-1XXX Z Series:  https://www.rigolna.com/products/digital-oscilloscopes/ds1000z/

Great community support from http://www.eevblog.com/forum/

Inexpensive Used Tektronix or HP Scope, Tektronix 465B

Used Tektronix, Hameg, Leader, Kenwood, Hitachi

Don't buy a service grade scope!

Stay away from Vacuum tube models!

Tektronix 465, 475, 485

Tektronix 2215 (2200 series in general) 2225, 2400 series 2445, 2465

Make sure probes are rated for frequency or greater and make sure compensation range contains the input capacitance of the scope

Find Dave Jones video on Proper Probe Usage (how not to blow up your scope!) - https://www.youtube.com/watch?v=xaELqAo4kkQ

Pico Scopes:  https://www.picotech.com/oscilloscope/2000/picoscope-2000-overview

Bit Scope:  http://www.bitscope.com

Saleae:  https://www.saleae.com

Digilent Analog Discovery 2:  http://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/

Red Pitaya:  http://redpitaya.com

Alan's Best Suggested OScope Video Links for Show Notes
Video Index PDF file

Basic operating and controls tutorials:
  • #242: How to use an oscilloscope on antique radios | NJARC
  • #160: Oscilloscope Basics, and how they can be used in the hamshack | tutorial
  • #11: Tektronix Oscilloscope Triggering controls and their usage
  • #10: AC / DC Coupling on an Oscilloscope
  • #238: Oscilloscope Vertical Position and Offset explained
  • #206: Importance of 10X Probe Compensation with your Oscilloscope
  • #9: Basic 1X and 10X Oscilloscope Probe tutorial
  • #179: How to make a peak to peak voltage measurement on a scope
  • #96: Tutorial on Digital Oscilloscope sample rate, record length and data processing
  • #69: Basics of Analog Oscilloscope Bandwidth
  • #68: Oscilloscope Probe Ground lead length affects on signal quality
  • #65: Basics of using FFT on an oscilloscope
  • #43: Analog Oscilloscope Basics: Making a Frequency Measurement
  • #35: Using the ADD/INVERT mode on an analog scope to view differential voltages
  • #33: Oscilloscope AUTO Triggering explained
  • #31: Analog oscilloscope ALT, CHOP, ADD, INVERT vertical controls
  • #25: Analog Oscilloscope bandwidth considerations

​Some Useful Applications of a scope in the hamshack and radio workbench:
  • #90: Measure Capacitors and Inductors with an Oscilloscope and some basic parts
  • #72: Simple Station Monitor for Ham Radio using an Oscilloscope
  • #7: Monitor your Ham Radio transmitter with an oscilloscope
  • #8: Two-tone test of SSB transmitter output
  • #37: Use a scope to measure the length and impedance of coax
  • #162: How to measure coax velocity factor VF and impedance Z
  • #138: How to Measure Output Impedance
  • #135: Measure Capacitor ESR with an Oscilloscope and Function Generator
  • #112: Use an Oscilloscope and Signal Generator help tune an HF Antenna, measure complex impedance
0 Comments

RF Power Meters, DC Power Meters, Digital Multimeters

8/16/2016

0 Comments

 
George and Jeremy discuss test and measurement equipment - RF Power Meters, DC Power Meters, and Digital Multimeters.

Digital Multimeter Comparison Video - https://youtu.be/tl76f0S3iOU

LM317 power supply Kit - http://www.ebay.com/itm/LM317-Adjustable-Voltage-Regulator-Step-down-Power-Supply-Module-LED-Voltmeter/141812241288?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D2%26asc%3D37470%26meid%3D8a24a918e95b4208bffa4707fe8c0eed%26pid%3D100005%26rk%3D4%26rkt%3D6%26sd%3D330942829760

Cheap kits and electronics - www.banggood.com
https://blog.adafruit.com/2016/08/11/portable-adjustable-power-supply-3dthursday-3dprinting/

Icom released a new ID-51 Plus2 - http://www.icom.co.jp/world/news/160808/ID-51_PLUS2_colorvariation.pdf

Kenwood TH-D74A Information - http://www.jvckenwood.com/en/press/2016/08/press_160808.html

KF7IJZ’s Raspberry Pi 3 Cluster - https://www.youtube.com/watch?v=KJKhRLKXr-Q

Must have Digital Multimeter features
  • Auto Ranging
  • True RMS A/C Measurement
  • Check max voltage and current specs
  • Backlight
  • Kick stand
  • Continuity testing beep
  • >4000 counts / 3 ¾ Digits - https://www.youtube.com/watch?v=U4JFeU-o2kc
Nice to have Digital Multimeter features
  • Capacitance
  • Diode check
  • Transistor check
  • Frequency counter
  • Computer connectivity
  • High quality probes
  • Impact resistant / weather proof case (rubbery)
What do you get as Digital Multimeter price increases?
  • Precision
  • “Nice to have” Features
  • Non contact sensing
  • Computer connectivity
  • Accessories
  • Power Handling
  • Faster continuity test response
Good test probe characteristics:
  • Silicone insulation not cheap wire
  • Good strain relief
  • Flexible
  • Sharp probe points
  • Removable alligator clamps
FLUKE TL71 10A PREMIUM DMM TEST LEAD SET FOR DIGITAL MULTIMETER PROBES NEW $18
Digital Multimeter Recommendations
  • Tenma 72-7780 6000 count TRMS - $60 - http://www.mcmelectronics.com/product/TENMA-72-7780-/72-7780
  • Extech…
  • Tenma 72- 10410 - $67 6000 count TRMS w/ USB - $67 - http://www.mcmelectronics.com/product/72-10410
  • Tenma 72-10415 22000 count TRMS w/ USB Connectivity $100 - http://www.mcmelectronics.com/product/TENMA-72-10415-/72-10415
  • EEVBlog Branded Bryman BM235 - ~$100US - https://www.eevblog.com/product/bm235-multimeter/
  • Fluke 87V - $340 - https://www.amazon.com/Fluke-FLUKE-87-V-Digital-Multimeter/dp/B00T3LZLFG/ref=sr_1_1?ie=UTF8&qid=1469753599&sr=8-1&keywords=fluke+87
  • Fluke 287- $450 -  https://www.amazon.com/Fluke-287-Electronics-Multimeter-TrendCapture/dp/B01HAWOWO0/ref=sr_1_1?ie=UTF8&qid=1469753537&sr=8-1&keywords=fluke+287
  • Keysight (Agilent) U1272A - $390 - http://www.mcmelectronics.com/product/KEYSIGHT-TECHNOLOGIES-U1272A-/72-8935

Clamp Current Probes - Tenma - $40 - http://www.mcmelectronics.com/product/72-9180#review

RF Watt Meters:
  • MFJ 822 (HF, 2m) - $60 - http://www.mtcradio.com/mfj-822-wattmeter-hf-vhf-1-8-200-mhz-300-w-mobile/
  • MFJ 842 (2m,220,440) - $60 -
  • Diamond SX-200 (HF 2m) - $90 - http://www.hamradio.com/detail.cfm?pid=H0-000009
  • Diamond SX-600 (HF, VHF, UHF) - $180 - http://www.hamradio.com/detail.cfm?pid=H0-000013
  • Bird Model 43 and slugs ($300 for meter + ~$50+ per slug)
  • http://www.birdrf.com/Products/Wattmeters_Line%20Sections/PortableWattmeters/43_General-Purpose-Wattmeter.aspx#.V6tGLpgrKUk

DC in-line power monitor:
  • Powerwerx Wattmeter-PP  $50 - https://powerwerx.com/watt-meter-analyzer-inline-dc-powerpole
  • RC Digital LCD Watt Meter Battery Voltage Current Power Analyzer Tester - http://www.ebay.com/itm/Digital-LCD-Watt-Meter-Battery-Voltage-Current-Power-Analyzer-Tester-60V-100A-RC-/281826900593?hash=item419e313a71:g:NZoAAOSwl9BWHPwg
  • West Mountain Radio PWRcheck - $185 - http://www.westmountainradio.com/product_info.php?products_id=pwrcheck

Sparkfun - How to use a multimeter - https://learn.sparkfun.com/tutorials/how-to-use-a-multimeter

Fluke - ABC's of DMMs (Digital Multimeters) - http://support.fluke.com/find-sales/Download/Asset/1260898_6116_ENG_M_W.PDF

Ideal Industries - Basics of Digital Multimeters - http://www.triotest.com.au/shop/images/basics_of_digital_multimeters.pdf

​EEVBlog Multimeter Videos
  • DMM Buyers Guide for Beginners:  https://www.youtube.com/watch?v=gh1n_ELmpFI
  • How a Multimeter Works: https://www.youtube.com/watch?v=yuCXsT3_WRE
  • Multimeter Counts and Resolution:  https://www.youtube.com/watch?v=U4JFeU-o2kc
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DC Power Supplies

8/2/2016

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George and Jeremy take a look at power supplies for powering radios and working on electronic projects.  They explain the differences between traditional radio power supplies and “lab” Constant Current / Constant Voltage power supplies.  They also provide helpful tips on what to look for when selecting power supplies for your radio or your workbench.

Tim KE4KE Website - http://www.ke4ke.com

Vance N3VEM - http://www.n3vem.com

Packtenna Mini - http://www.packtenna.com/

YouTube Packtenna Mini Video - https://www.youtube.com/watch?v=z4RONXiPnkE&feature=share

New KJ6VU KX2 portable case video - https://www.youtube.com/watch?v=dfhqIH3wuk8

Bioenno LiFePO4 Batteries for ham use - https://www.bioennopower.com/collections/12v-series-lifepo4-batteries/products/12v-8ah-lfp-battery-abs-sealed-black-case?variant=1014198656

Raspberry Pi Clock - from N0BEL - http://n0bel.net/v1/index.php/projects/raspberry-pi-clock

2 Categories
  • “Ham” 12v PSU
  • Bench/Lab PSU

Ham “High Current” power supply considerations and tradeoffs

Linear vs Switch?

Variable Voltage vs Fixed Voltage?

Meters vs no meters?

What do you add as you go up in price?
  • Precision
  • Linearity
  • Low Noise/Low Ripple
  • More current/power
  • Computer connectivity/programmability

Linear 12V High Current Power Supply: Astron RS-35A - $180 - http://www.hamradio.com/detail.cfm?pid=H0-004434

Switching 12V with Analog Meters: Samlex 1235M - $130 - https://www.hamradio.com/detail.cfm?pid=H0-008965

Switching Variable Voltage with Meters: Powerwerx SPS-30DM - $160 - http://www.hamradio.com/detail.cfm?pid=H0-011684

Switching 12V: Powerwerx SPS 30DV - $110 - http://www.hamradio.com/detail.cfm?pid=H0-010662

Switching 12V Variable Voltage: Alinco DM-330MVT - $160 - http://www.hamradio.com/detail.cfm?pid=H0-003728

Power Supply Accessories
  • West Mountain Radio Rig Runners - http://www.westmountainradio.com/rigrunner.php
  • Low Loss Power Gate Battery Charging System - $50 - http://ki0bk.no-ip.com/~pwrgate/LLPG/Site/LLPG.html
  • West Mountain Radio Super PWRGate PG40S - $140 - http://www.hamradio.com/detail.cfm?pid=H0-007770
  • PwrGuard Plus Low Voltage Disconnect - http://www.westmountainradio.com/product_info.php?products_id=pwr_guard
  • Anderson Power Poles
  • Crimper - https://powerwerx.com/tricrimp-powerpole-connector-crimping-tool

Workbench Power Supply - What specs do you care about?
  • 0-20v or more
    • Single ended 0-20v - voltage reference to ground
    • Maybe Dual ended +/- 15 volts
  • Low ripple (<1mv p/p) - what is ripple?  (EEVBlog Ripple and Noise https://www.youtube.com/watch?v=Edel3eduRj4)
  • 2-5 amps
  • Meters for Volts and Current (digital or analog)
  • Current limiting adjustment
  • Resettable output breaker
  • Short circuit protection
Test Leads - banana plug to whatever you need to connect to
What do you add as you go up in price?
  • Precision
  • Linearity
  • Low Noise/Low Ripple
  • More current/power
  • Computer connectivity/programmability

Dave Jones EEVBlog - earth ground vs ground referenced circuit - https://www.youtube.com/watch?v=xaELqAo4kkQ

Tenma 72-8345A 1-36V 3A Power Supply - $150 - http://www.mcmelectronics.com/product/TENMA-72-8345A-/72-8345A

Tenma 72-8350 1-20V 5A Power Supply - $160 - http://www.mcmelectronics.com/product/TENMA-72-8350A-/72-8350

Tenma 72-9465 1-36V 5A USB Controllable - $200 - http://www.mcmelectronics.com/product/TENMA-72-9465-/72-9465

GW Instek GPS-1850D - $200 - http://www.mcmelectronics.com/product/GW-INSTEK-GPS-1850D-/72-12100

Rigol Bench Power Supplies - https://www.rigolna.com/products/dc-power-loads/
Siglent Bench Power Supplies - http://siglentamerica.com/pd.aspx?tid=17&T=1
​

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