I was confused, Ron... no the screen doesn't need to be
resonant. It's merely a control voltage.
Now, there -is- a need to modulate the screen of the
final.
--
-Geoff/W5OMR
The best way to do that is put a choke in the screen lead.
Or drop the B+ through a big resistor if you run 2
K3PID wrote:
Geoff, I can't imagine why you would want a resonant screen supply. Is there
any reason to? Isn't the screen supposed to be steady state? Would there be any
advantage to having it vary with the plate? How would you synchronize them?
73 K3PID
Ron H.
I was confused, Ron... no t
Geoff, I can't imagine why you would want a resonant screen supply. Is there
any reason to? Isn't the screen supposed to be steady state? Would there be any
advantage to having it vary with the plate? How would you synchronize them?
73 K3PID
Ron H.
_
cussion of AM Radio in the Amateur Service"
Sent: Tuesday, July 24, 2007 1:19 PM
Subject: Re: [AMRadio] RE: Average Age etc..
On 7/24/07, Peter Markavage <[EMAIL PROTECTED]> wrote:
I don't know Todd - you seemed a lot older when I met you, but then
again, I was probably suf
I would get about a 50% on the current extra test...
Brett
N2DTS
I just turned 65 in June. Retired on 24MY07. Now officially old buzzard.
I need to get me a slopbucket rig now so I can get on 20m during the day and
talk about colonoscopies, medications, blood pressure, social security, et
A.R.S. - WA5AM wrote:
Geoff,
Don't forget Mr. Lum/K5AYD still on just about every day and late
night from Cache, OK. Lum is, or will be 87 this year, born in 1920.
WWII vet, etc. BTW, I think Perry IS on this list, however he hasn't
posted anything yet.
This thread really makes me feel like a
Brian I'll toss my hat in as well as K5BAI's (no computer). I'll be 76 in
Oct and Jim is 78. Both of us are on AM each morning from north Texas. I well
remember when I got my First Class ticket. Kansas City the day before
Thanksgiving way back when. I show up and only one inspector wa
I always enjoy listening to Lum and his World-Wide Apache - K5"A"YD!
Besides, he's a fellow old tractor collector! :)
73',
Kent/KX5KW
On Tuesday 24 July 2007 12:02:12 pm A.R.S. - WA5AM wrote:
> Geoff,
>
> Don't forget Mr. Lum/K5AYD still on just about every day and late
> night from Cache, OK.
On 7/24/07, Peter Markavage <[EMAIL PROTECTED]> wrote:
I don't know Todd - you seemed a lot older when I met you, but then
again, I was probably suffering from the contest/DX party time from the
night before. According to the AMFone birthday announcements, I turned
107 on May 28th.
107, huh? Yo
Geoff,
Don't forget Mr. Lum/K5AYD still on just about every day and late
night from Cache, OK. Lum is, or will be 87 this year, born in 1920.
WWII vet, etc. BTW, I think Perry IS on this list, however he hasn't
posted anything yet.
This thread really makes me feel like a youngster. I'll be 50
Geoff/W5OMR writes:
Because When Inductive Reactance (X(l)) equals Capacitive Reactance (X(c))
you get Resonance! At least in triodes. Pentodes need some extra work,
due to screen voltages/current.
As far as I know, the condition of resonance: XsubL = XsubC ; holds for the
LC resonant cir
I don't know Todd - you seemed a lot older when I met you, but then
again, I was probably suffering from the contest/DX party time from the
night before. According to the AMFone birthday announcements, I turned
107 on May 28th.
Pete, wa2cwa
On Tue, 24 Jul 2007 09:36:50 -0400 "Todd, KA1KAQ" <[EMAI
Geoff I have never seen a tuned circuit in the screen lead.
Have you and if you have, I would like to see the diagram
for interest's sake.
Jim/W5JO
From: "Geoff/W5OMR" <[EMAIL PROTECTED]>
That brings up a
question... (and I'm asking because I just don't know
pentodes/tetrodes) should the sc
Rick Brashear wrote:
Yep! You're right, Ron. I know there was at least one schematic that had
to be drawn and you certainly had to have a working knowledge of current
flow and basic circuit design. I guess there were more questions then
relating to the type of equipment we used in those days.
In a message dated 7/24/2007 9:37:15 AM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
> John 'AWM - you just turned 70? Congrats, OM. When I saw you at
> Dayton, I would've guessed late 50s/early 60s.
Wow! Thanks, Todd. You made my week!
73,
John, W4AWM
**
On 7/23/07, Peter Markavage <[EMAIL PROTECTED]> wrote:
Central Electronics 100V and 200V (50's stuff) transmitters had no
transmitter tuning on the front panel. Once you aligned them properly,
there was no dip the dipper or peak the peaker or adjust the grid or
diddle with the buffer, etc.
Yes
At 08:30 PM 7/23/2007, kenw2dtc wrote:
Since we are going down memory lane, I thought I would put in my 2
cents worth:
http://w2dtc.com/w2dtc-radio-history-page.htm
73,
Ken W2DTC
Ken,
You're fortunate to still have the photos, and so many of them. For
whatever reason my parents didn't hav
Dave,
You were very lucky to start out with good equipment. Great photos and
history narritive.
73,
Ken W2DTC
--
http://members.cox.net/n7rk/history.html
Dave N7RK
__
AMRadio mailing list
List Rules (mus
Good evening - I have really enjoyed reading this thread. I have
subscribed to this reflector for a couple of years but rarely post as I
am a boatanchor collector who very rarely works AM. I do enjoy reading
what's posted here.
I am presently 55 and one of the younger of my local DX and boatan
Ken,
Very well done - thanks for sharing the trip.
I got my Novice ticket in 1954 when I was a freshman in highschool and got my
First Class Radiotelephone ticket when I graduated. We had a lot of common
experiences whithout ever meeting.
Again, thanks for the great presentation.
73
That was interesting reading Ken. Up until you started with
high power, I was with you. I licensed in late 1955 and got
on 80 meter CW as a Novice about 6 months later. My parents
would not let me order anything until I knew I had passed
the test. ARC equipment followed for about a year and
current extra test...
Brett
N2DTS
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Rick Brashear
> Sent: Monday, July 23, 2007 7:42 PM
> To: 'Discussion of AM Radio in the Amateur Service'
> Subject: RE: [AMRadio] RE
Since we are going down memory lane, I thought I would put in my 2 cents
worth:
http://w2dtc.com/w2dtc-radio-history-page.htm
73,
Ken W2DTC
__
AMRadio mailing list
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: h
I gotta get in here, too. I turned 70 yesterday and my next project, if I
ever get the time, is to recreate my old P-P 6L6 Novice rig and PS. I have all
the parts ready to go, including the exact same power supply trannies that I
got from an old radio store.
BTW, If anyone had my original rig
Central Electronics 100V and 200V (50's stuff) transmitters had no
transmitter tuning on the front panel. Once you aligned them properly,
there was no dip the dipper or peak the peaker or adjust the grid or
diddle with the buffer, etc.
Pete, wa2cwa
On Mon, 23 Jul 2007 18:41:48 -0500 "Rick Brashea
Yep! You're right, Ron. I know there was at least one schematic that had
to be drawn and you certainly had to have a working knowledge of current
flow and basic circuit design. I guess there were more questions then
relating to the type of equipment we used in those days. When I got my
General
Hey! I'm 62 but whose counting? I seem to recall that when I upgraded my Novice
license I actually had to draw a Hartley oscillator and label the component
values There were some multiple guess but they were rules etc as I recall...
K3PID ( was KN3PID at the time..)
Ron H.
This outgoing em
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