I purchased the NJM2037 from Mouser. It's worked fine for me.
tim ab0wr
On Tue, 15 May 2018 21:01:23 -0700
"Jerry Gaffke via Groups.Io" <jgaffke@...> wrote:
Mouser sells the NJM2073D, I'd recommend that.
? ??513-NJM2073D, costs about $1, plus another $5 for shipping .
Or could get the UTC TDA2822 on Tayda, that looks second tier to me
judging from the looks of their datasheet.
The NTE7155 should also just drop in, not many are selling it.
Any of the three is a better bet than the WX clones.
The WX can simply fail if the supply voltage exceeds 8 volts or so,
or it might work fine at our 12v.? Luck of the draw (and whether it
was cut from the center of the wafer or the edge, that's my guess).
Here's a few suggestions to make the Mouser shipping charge
worthwhile: 283-200-RC? ? 200 ohm 3W resistors, put 4 in parallel for
a dummy load A BNC connector for the antenna, as the one in the kit
is not ideal. Some spare IRF510's?? 2n3904's?? RF gain pot?
?Cabinet?? Parts for a schottky diode RF probe?? Knobs?? Polyswitch
or fuse???
Jerry
