Saturday, 23 December 2023

Re: [Amateur-repairs] SETTING UP A TEST BENCH

All this is giving me some ideas also.  I like the big screen TV for reading schematics.  My eyes are starting to get old.

A lot of people have mentioned a good soldering iron(s).  This is very important!  Mine is variable up to 750° or so, But I also have different size tips, normal for regular PCB components, and a BIG tip for things that have more thermal mass.

My sig gen is an HP-8648C has more than what I really need (9K to 3G, -139 dBm to +14.5 dBm)  [Below 30 MHz S9 is defined as -73 dBm, S1 is -121 dBm, so you want that covered.  40 over S9 is a pretty strong signal AT -33dBm]

Don't go with an elCheapo multimeter with a dial and a needle, you'll get elCheapo results.  Get something decent.  I have a Boonton 92C, it's an RF mV meter calibrated to 700 MHz has a max full scale of 3 volts, the bottom FS is 3mV and I can read 250, maybe 100 µV.

Also a VTVM for peaking and nulling non-RF levels.  Here I use an HP-410-C, which is actually a transistorized VTVM.

A good Frequency Counter.

One thing I just got is a 0 to 450 volt power supply.  This I can use on spare part electrolytic caps sitting around.

On the want list is another dummy load and coax so I can put it in the far corner of the basement.

One thing you can do is look at web sites of people who work on radios and see what they use and get ideas from there.  You know what you want to do with it, you know your skill level, ect.

Above all; HAVE FUN!






--

Bob
KD8WU

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