Jim
I agree. They add up to me. The impedance defines the turns ratio, the
voltage rating defines the insulation characteristic, and the current
defines the size of the core and wire size in the secondary.
Byron, W3WKR
- Original Message -
From: "James M. Walker" <[EMAIL PROTECTED]>
To:
Geoff
Thanks. That one works.
B.D.
- Original Message -
From: "W5OMR/Geoff" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio"
Sent: Friday, September 23, 2005 8:01 PM
Subject: Re: [AMRadio] Pi-Net vs Link Couple
> Byron Lichtenwalner wrote:
>
> > &
: [AMRadio] Pi-Net vs Link Couple
> Byron Lichtenwalner wrote:
>
> > Geoff
> >
> > Don't have the tube characteristics here, but from your description
> > your changing the operating point of the amp by changing L/C ration.
> > Or the "transformer effe
y, September 22, 2005 5:59 PM
Subject: Re: [AMRadio] Pi-Net vs Link Couple
Byron Lichtenwalner wrote:
Geoff
Your last discussion on the L/C ratio of the tank intrigues me. Was the
circuit not resonate with the extra (now removed) turns?
On the link tuning, what series cap. value are you using?
Geoff
Your last discussion on the L/C ratio of the tank intrigues me. Was the
circuit not resonate with the extra (now removed) turns?
On the link tuning, what series cap. value are you using? Does it load
heavier when at max. cap or minimum?
Byron, W3WKR
- Original Message -
From: "W
Bob
>From: "Bob Bruhns" <[EMAIL PROTECTED]>
>To: "Discussion of AM Radio" <
I like your comment about SWL'ers. I remember well listining to the AM'ers
on the high end of 75 stiring my inquisitive nature and interest to "wanting
to do that".
I know that old Philco didn't have a BFO, so I would hav
Patrick
Love what you have done on the cap.
Think I would have "reinforced" the nut with a tight bit of hobby brass
tubing slipped over the nut to prevent the next screw adjusting from
breaking it entirely apart.
Byron, W3WKR
- Original Message -
From: "Patrick Jankowiak" <[EMAIL PROTECTE
And then how about a nice 5 or 6 DB antenna? A nice 4 sq. on 75 won't cost
much more than a 1KW, 100% mod. rig, is steerable, and legal.
Byron,
W3WKR
Ed
Shows you what high level modulation can do, with finals running in Class C
vs. the amp running in linear mode.
Byron, W3WKR
John
I has been a while since I used a loop and keyed a tube trqnsmitter, but
here is whaqt I remember.
VFO keyers in typical CW/AM rigs are single band devices since the shift
multiplies as the VFO output multiples to the next up band.
Since the keyer is adding (or subtracting) capacitnce to the V
Bill Let's do that any way. Would be nice to have a spare.
Byron
- Original Message -
From: "Bill" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio"
Sent: Thursday, June 23, 2005 4:03 PM
Subject: Re: [AMRadio] Viking Ranger movement
> Byron,
>
> If your find doesn't materialize, give me
The meter in my Viking Ranger appears to have an open winding.Any idea
where I might find a replacement movement or replacement meter?
Byron, W3WKR
From [EMAIL PROTECTED] Mon Jun 20 13:52:40 2005
Return-Path: <[EMAIL PROTECTED]>
X-Original-To: amradio@mailman.qth.net
Delivered-To: amradio@mai
ase edit your Subject line so it
> is more specific
> than "Re: Contents of AMRadio digest..."
>
>
> Today's Topics:
>
>1. Re: Hudson Communicates (peter markavage)
>2. Home Brew 4-1000 amp (Byron Lichtenwalner)
>3. 4-1000 amp (Byron Lichtenwa
From: "Byron Lichtenwalner" <[EMAIL PROTECTED]>
To: "amradio@mailman.qth.net"
Subject: Home Brew 4-1000 amp
Date: Thursday, May 26, 2005 12:20 AM
Friends
Yesterday I bought a great looking amp (see
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=57756316
Don
I would recommend looking at W3AM's web page for his revisions. I found
them helpful with references to other work people have done on the ranger
Byron, W3WKR
I have received several reply tat suggest using a regular 1/4 or 1/2 watt
pot and a "current amplifier" horiziontal output traqnsistor (NPN). That
triggered my memory, and I found such a circuit by W3BYM in Electric Radio,
Dec. 2000, that included some other recommened changes for the Ranger.
I have been following the discussion on Jim's problem, and have a similar
"quest".
I have been trying to find a 4 watt, 20 k pot. to use in a Ranger power
control circuit as described by W3AM. Have had no luck in finding on. Any
ideas?
Byron, W3WKR
If you had an amp rated at 1500 pep rated for Continuous Commercial Service
and were going to drive it with a Ranger, (with W3AM's modification as an
example) where would you set the carrier level with no modulation?
Byron, W3WKR
Hello Alan
The pictures of the trnsmitter brought back many memories. I built one just
like it in about 1955 or 1956 from a Handbook article. There waqs a
companion modulator with 807's, also using the economy power supply.
I still have a spot on my finger where I hit the plate choke while chang
Dave, I am not familiar with the 20V, but the problem you are describing
suggests a stray magnetic field around the meter might cause the deflection.
Have you changed any other wiring routing around the meter?
Byron, W3WKR
- Original Message -
From: "David Knepper" <[EMAIL PROTECTED]>
To:
Hello Frank
I have an earlyRanger that has a keyer added. Your right, it is a small
chassie supported by three long standoff and is positioned above the operate
switch. Since the transformer on the Ranger 1 did not have taps on the
transformer for the negative voltage supply, there were abunch of
Don
Sounds like your on the right track with the trapped dipole.
Another choice might be to use a random length wire and good ground with any
of the many automatic ant. tuners designed to end feed long wires. Used
one in a mobile installation with a 17 ft whip with reasonable success.
Byron, W3WK
Gary
I have read several of your writings that refers to "tilt". What is it, or
where can I go to learn more about it?
Byron W3WKR
> ------
> >
> > Message: 1
> > Date: Sat, 31 Jul 2004 00:34:25 -0400
> > From: "Byron Lichtenwalner" <[EMAIL PROTECTED]>
> > Subject: [AMRadio] Viking Ranger Bandswitch-VFO linkage
>
bandswitch
>
> I'll look in my parts unit after while and see what it could be
>
> de W5SUM
>
> owner of a few Rangers LOL
>
>
>
> -- Original Message ---
> From: "Byron Lichtenwalner" <[EMAIL PROTECTED]>
> To:
> Sent:
is beyond me.
> > ------
> >
> > Message: 1
> > Date: Sat, 31 Jul 2004 00:34:25 -0400
> > From: "Byron Lichtenwalner" <[EMAIL PROTECTED]>
> > Subject: [AMRadio] Viking Ranger Bandsw
is solvable so long as
nothing is broken
regards,
Mahlon - K4OQ
ps: Have any of you ever seen one of the Johnson assembly manuals? How
anyone ever managed to assemble a Ranger or a Valiant with this
information is beyond me.
> ------
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