Michael Black wrote:

And of course, the subject header didn't say it all, since there are various
reasons someone might be looking for a given year's handbook, but not all
of those reasons actually require the specific year

But if I got that year, I would get what I want.

What I am actually looking for is the article or project on using 813's
as triode modulators. If that expands the editions, so be it.

js


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JS, Looking at my 1959 Handbook, there's no project using 813's in a
modulator, per se. The high-power modulator in that issue uses 811A's.
The only project using an 813 is an amplifier, utilizing a single
tube. I'll check deeper in that year and see if I missed something
obvious and/or imbedded in the text on modulation/modulators.

de K3HVG

Jack Schmidling wrote:
Michael Black wrote:

And of course, the subject header didn't say it all, since there are
various
reasons someone might be looking for a given year's handbook, but not all
of those reasons actually require the specific year


But if I got that year, I would get what I want.

What I am actually looking for is the article or project on using 813's
as triode modulators. If that expands the editions, so be it.

js

K3HVG wrote:
JS, Looking at my 1959 Handbook, there's no project using 813's in a
modulator, per se. The high-power modulator in that issue uses 811A's.
The only project using an 813 is an amplifier, utilizing a single
tube. I'll check deeper in that year and see if I missed something
obvious and/or imbedded in the text on modulation/modulators.

I have a 1964 (11th edition) handbook here, and it has only one transmitter
project which is a little QRP 4-tube set, the Knightkit T-60.
--scott


--
"C'est un Nagra. C'est suisse, et tres, tres precis."

K3HVG wrote:
JS, Looking at my 1959 Handbook, there's no project using 813's in a
modulator, per se. The high-power modulator in that issue uses 811A's.

The reference was from an ER article in issue 153-155 by W3BYM. His
email in in qrz so I asked him for more info.

However, seems like QRZ email addys are not much good. Most of them bounce.

js

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What I am actually looking for is the article or project on using 813's
as triode modulators. If that expands the editions, so be it.

I will do some searching, but I think the Radio Handbook, rather than the
Radio Amateur's Handbook, may have the article you are looking for. I know
it has an article on using 813s as triode modulators, which is rather
unusual. And, I am thinking it was further back. Will go upstairs to the
radio book library and do some searching.

73, Colin K7FM

COLIN LAMB wrote:

I will do some searching, but I think the Radio Handbook, rather than the
Radio Amateur's Handbook, may have the article you are looking for.

You are absolutely correct and someone has emailed the article to me.

Thanks,

JACK K9ACT




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The 16th edition Radio Handbook (1962) has a "Zero Bias Tetrode Modulator"
featuring a pair of 813s operating as grounded grid, zerio bias modulators
and claims to have 500 watt output. Page 683

I looked in the 11th edition of Radio Handbook and did not find it, but I am
about 87.22% certain that one of the Handbooks features 813s utilized as
triode modulators.

Will keep looking.

Colin K7FM

Well, could not find it in the upstairs library. Will need to go out to the
hamshack. If it is not there, I will look in the darkroom. Please say
nothing to my wife about my temporary book displacement.

Colin K7FM

"COLIN LAMB" wrote in message
.net...
Well, could not find it in the upstairs library. Will
need to go out to the hamshack. If it is not there, I
will look in the darkroom. Please say nothing to my wife
about my temporary book displacement.

Colin K7FM
OMG, another two-hobbied person (maybe three with the
books). I paraphrase James Thurber from a parody advice
column:
Q. Doctor, we have books the way some people have mice.
A. I can't tell if you are complaining or bragging.


--
---
Richard Knoppow
Los Angeles, CA, USA




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Posted via a free Usenet account from http://www.teranews.com

Q. Doctor, we have books the way some people have mice.
A. I can't tell if you are complaining or bragging.

I brag. My wife complains. Who says you can't have it both ways.

Colin K7FM