[ARC5] Some information...

[CARL HUETHER]

Now you went and did it Mike! Before I go to bed I'll have read that complete first issue you linked to, including the ads. I'll get to the other tomorrow.

I dont remember the Sherwood article but that was during my travelling overseas days and it is probably still unwrapped and in a box in the attic. I rarely throw anything away.

I have have every issue of HRM since Skip Tenney (recently SK) and Jim Fisk (missed by all) came to National Radio to sell them on placing an ad. I was wearing my Service Manager hat and signed up for a subscription on the spot.

Living in NH it wasnt much of a ride to Greenville after a visit to my favorite old car junkyard (Im a confirmed gearhead) along the way and then friends over in Mason on the back way home. Those HRM guys rarely went home on Saturday.

Carl




> On September 12, 2019 at 6:04 PM MICHAEL ST ANGELO <mstangelo at comcast.net> wrote:
> 
> 
> Carl,
> 
> The TL part was a TL442. I remember it well. 
> 
> Rob Sherwood replaced the original dual diode detector in the R4C with a MC1496 design. Check has excellent article in the December 1977 issue of Ham Radio Magazine om page 10:
> 
> <https://www.americanradiohistory.com/Archive-DX/Ham%20Radio/70s/Ham-Radio-197712.pdf>
> 
> Rob Sherwood used the TL442 a replacement for his MC1496 mixer since it used less biasing parts. Check this Notebook article in the October 1978 issue, page 94 in Ham Radio:
> 
> <https://www.americanradiohistory.com/Archive-DX/Ham%20Radio/70s/Ham-Radio-197810.pdf>
> 
> I have both parts and used them in various designs. I replaced the mixer in my Ten-Tec Argonaut 505 with a 1496 design.
> 
> Ham Radio Magazine was and is my favorite radio magazine. I looked forward to every issue, especially the October Receiver issues. Each issue was full of excellent application, theoretical and historical articles. I remember articles from HR but forgot what I ate last night.
> 
> Mike N2MS
> 
> > On September 12, 2019 at 4:35 PM CARL HUETHER <k1uhy at comcast.net> wrote:
> > 
> > 
> > Ken, Im glad to see that old IC still in use.
> > 
> > Back in the mid 80's to late 90's when I was running RadioKit I sold a Product Detector kit to replace the poor one in the Drake R4C that used a TI IC (cant remember the designation,TL???) that became unobtainium and adapted the round can version of the 1496. I used my own R4C as the test bed.
> > 
> > I probably still have some in a parts cabinet.
> > 
> > For tube versions I like the Pullen (also in the mixer) but it is a bit more involved with bullet proof no overloading.
> > 
> > Carl
> >