Wednesday, 28 August 2013

Re: [Amateur-repairs] In search of the basic test equipment for workbench.

 


I like to have a decent shortwave receiver handy. My current preference is a
DX-400/CR-2021, but if you've got room for a R-390A ... Nice for sniffing
oscillators and IF stages, monitoring transmit signals, and it entertains you
when not serving as test gear.

73

-J9im

On Wed, 28 Aug 2013 14:16:48 -0700 (PDT), Jim wrote:

>Here's my list of essentials --
>
>-- Harbor Freight $2.99 DVM (OK to substitute a $299 Fluke 179 DVM) OK to have several
>-- MFJ-269 antenna analyzer (OK to substitute an MFJ-259)
>-- VTVM -- whatever's working, from the swapfest
>-- dual-channel 100 MHz analog 'scope, your choice
>-- AADE LC-2 cap/inductance meter
>-- RF power meter that's not subject to easy tampering, like a Bird 43
>-- el cheapo RF power meter like a CB tester, Realistic 3-meter is my preferred choice
>-- signal generator good to your max freq of interest, HP8640B recommended, with 1024 MHz option
>-- another signal generator, BA or GR is OK
>-- audio signal generator, HB is fine
>-- freq counter good to your max freq of interest, at least 6 digits, NOT some cheap piece of junk
>-- ESR tester, Chinese junk is OK
>-- big isolation transformer and big variac, minimum 5 amp
>-- homemade DC load capable of sinking at least 20 amps (a bunch of car headlights works FB) with a current meter
>-- RF dummy load, more than one, pwr good to your max HF output and another one good to your max freq
>-- probes and test leads as required for all the equipment
>-- coaxial interconnects as required for all equipment using coax connectors
>-- 30 or 40 dB coaxial tap good to at least 1 GHz
>-- big-a$$ DC power supplies at (nominal) 13.8VDC, 28VDC, 48VDC
>-- metered variable DC supply, 0 - 35VDC or thereabouts
>-- big-@$$ handful of clip leads, more than you can count
>
>One piece I've also found useful is one of Kent Britain's log-periodic microwave PCB antennas on a length of microwave-suitable coax, for use as a signal sniffer.
>
>And ... a shipping scale, so you can weigh your junk before you take it to the post office.
>
>
>Add to that, I have a couple of spectrum analyzers, but I don't consider those to be essential, just "nice to have."
>
>
>73
>Jim N6OTQ
>
>
>
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--
Ham Radio NU0C
Lincoln, Nebraska, U.S.S.A.
TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time!

"Give a man a URL, and he will learn for an hour; teach him to Google, and he will learn for a lifetime."

HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/
http://incolor.inetnebr.com/jshorney
http://www.nebraskaghosts.org

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