[Premium-Rx] Reaction Instruments 685 AM-FM demodulator

[Charles Steinmetz]

Closing the loop:

Peter was originally looking for 2N4447 JFETs to repair the subject 
receiver.  I noted that Crystalonics makes the 4447 and also the 
similar 2N5432, and suggested contacting them.  I also noted that the 
very common (and inexpensive) J106 should also work in place of the 4447s.

Peter wrote:

>>The 2N5432 is interesting, while non stocked it is "available" from 
>>Digikey for only $46.76 each.  Yikes.  There are some sellers of 
>>them on ebay, one guy has them for $4.50 each plus $1 each shipping.

I replied:

>All of the 2N5432s listed on ebay are almost certainly counterfeit 
>-- don't bother with them.  Crystalonics sells small quantities 
>directly, so it's worth a call to inquire about both 4447s and 5432s.

I was buying some other Crystalonics parts today, and was reminded 
that they have a price list online -- so I looked up the 2N4447 and 
2N5432.  4447s are $10.25 each, and 5432s are $7.70 each.  Not 
jellybean cheap, but not bad for new parts direct from the OEM (if I 
were going this way, I'd go straight to the 2N4447s).  Crystalonics 
has a $25 minimum order for noncommercial customers, and takes 
payment by credit card.

I'm not suggesting that you should get 2N4447s, assuming the J106s 
work well (which I expect they will).  Just observing that things are 
not always as hard as one thinks they will be.  It pays to look or call.

Best regards,

Charles