Re: [AMRadio] Mod Transformer Available

[Byron Lichtenwalner]

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: "Discussion of AM Radio" 
Sent: Tuesday, September 27, 2005 8:34 AM
Subject: Re: [AMRadio] Mod Transformer Available


> The ratings are 5500 primary 1.14 KVA, and 5500 secondary
> 198 Amp DC.
>
> Don,
> I don't know what you mean by don't add up! The discussion
> was pertaining to the use of this particular transformer, in
> conjunction with a specific set of tubes, and RF stage.
> What doesn't add up?
> Jim
> WB2FCN
>
> "Donald Chester" wrote
>
> > If you calculate, those numbers don't add up.
> __
> > AMRadio mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:AMRadio@mailman.qth.net
> > AMfone Website: http://www.amfone.net
> > AM List Admin: Brian Sherrod/w5ami
> >
> >
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM List Admin: Brian Sherrod/w5ami

Re: [AMRadio] Pi-Net vs Link Couple

[Byron Lichtenwalner]

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:
>
> > <>Geoff
> > Could you check the address you gave for the 250TH data? My browser
tells
> > me some info is missing
>
>
> It's on my personal server.
>
> http://w5omr.shacknet.nu:81/~w5omr/hamstuff/AM-Stuff/XMIT-Tube-Data/
>
> --
> 73 = Best Regards,
> -Geoff/W5OMR
>
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM List Admin: Brian Sherrod/w5ami

Re: [AMRadio] Pi-Net vs Link Couple

[Byron Lichtenwalner]

Geoff
Could you check the address you gave for the 250TH data?  My browser tells
me some info is missing.

Byron
- Original Message - 
From: "W5OMR/Geoff" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio" 
Sent: Thursday, September 22, 2005 8:18 PM
Subject: Re: [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 effect"  (turns ratio of link to plate coil) gives
> > a better match to the antenna)
>
>
>
http://w5omr.shacknet.nu:81/~w5omr/hamstuff/AM-Stuff/XMIT-Tube-Data/250TH.pdf
>
> --
> 73 = Best Regards,
> -Geoff/W5OMR
>
>
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM List Admin: Brian Sherrod/w5ami

Re: [AMRadio] Pi-Net vs Link Couple

[Byron Lichtenwalner]

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 effect"  (turns ratio of link to plate coil) gives a better 
match to the antenna)


If you have a 1000 pf that will take the voltage, start there.  If you 
loading to an untuned link,  I bet you can load that thing like your using a 
bucket of bricks.


Byron, W3WKR
- Original Message - 
From: "W5OMR/Geoff" <[EMAIL PROTECTED]>

To: "Discussion of AM Radio" 
Sent: Thursday, 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?  Does it load
heavier when at max. cap or minimum?

Byron, W3WKR



It was resonant, but I wanted to draw a bit more current in the final. 
Not necessarily at the 4kV of DC that a 250TH can take, (4kV @ 250mA would 
be quite suffiecient, as long as I had enough drive to compensate for 
exceeding the plate dissapation by only running 45mA of grid drive per 
tube - for a pair, I'd need more like 150mA at that kind of current) but 
what I wanted, was around 1500v @ 350mA.


I even started using a 40m coil (since it only had 2 turns less than the 
modified 80m coil) and added some capacitance from an added split-stator 
cap to resonate the final on 75m, but I find that the last 100 to 150mA of 
plate current does not result in an appreciable increase in power output. 
Yeah, I could get 400mA @ 1500v, but the output was only around 200w. 
Changing back to the previous coil, I can make around 350w of carrier 
input, but the plate current is only around 240~250mA.  1500v @ 300mA = 
450w DC input and I'd like to keep the current up, while I reduce the 
voltage.  It would also be around 5000 ohms of Z, vs
a reduced current at higer voltage (say 1500 @ 100mA) is 15000 ohms.  HUGE 
swing in impedance, which makes for a huge difference in audio.


If I could get a starting figure on what size capacitor to use, I'd add 
one.  I'd like to use a variable capacitor, but am unsure of the value 
range.  400 to 1000pf?  Less? More?


I'm asking... I don't know.

--
73 = Best Regards,
-Geoff/W5OMR



__
AMRadio mailing list
Home: http://mailman.qth.net/mailman/listinfo/amradio
Help: http://mailman.qth.net/mmfaq.html
Post: mailto:AMRadio@mailman.qth.net
AMfone Website: http://www.amfone.net
AM List Admin: Brian Sherrod/w5ami 

Re: [AMRadio] Pi-Net vs Link Couple

[Byron Lichtenwalner]

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: "W5OMR/Geoff" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio" 
Sent: Thursday, September 22, 2005 5:14 PM
Subject: Re: [AMRadio] Pi-Net vs Link Couple


> I need to better proof-read my posts, before hitting the 'send' button..
>
> W5OMR/Geoff wrote:
> <>Donald Chester wrote:
>
> > What does 1500 watt pep have to do with it?
>
>
>
> Well... you know.  I certainly don't want to Advertise ;-)
>
> > My Gates BC1-T uses a pair of 833A triodes in parallel, with a
> > pi-network followed by a T network and another L netork, to couple the
> > final to the antenna.  The grid tank uses a tapped coil, with the tap
> > grounded to produce the out of phase voltage.  Both the adjustment of
> > the tap and the neutralising cap will affect neutralisation.
>
>
>
> My rig is a pair of 250THs in the final, modulated by a pair.  Like what
> you prefer, the final has plug-in coils for the grid input tank, as well
> as the final output tank.  The problem I have with that rig however, is
> that there seems to be some interaction between the grid circuit and the
> final circuit, even though the plug-in grid coil and link are
> 'underneath' the chassis, that the final coil and link sits on top of.
> When the rig was built back in the mid 50's, most everything available
> was steel, so that's what was used as a chassis.  (there, that makes
> more sense ;-))
>
> A suggestion of physically raising the final coil further up to get out
> of the field of the grid tank could be realized, if i wanted to give up
> the front-panel control of the Faraday [-shielding-] sheilded link.  As
> a result, neutralization is as close as possible/
>
> > The problem with grid neutralisation, sometimes called Rice
> > neutralisation, is that it doesn't hold very well over a wide
> > frequency range, especially if you attempt to switch over several
> > amateur bands.  My Gates stays neutralised over the 160m band from 1.8
> > to 2.0, but I never have tried to use it on any other band.
>
>
> I've got plug-in coils for that rig, from 80m thru 10m, but I'm more
> than a little leary of running a pair of 250TH's in Class C on 10m ;-)
>
> I wonder though Don, while I've got your .. uhm 'ear' (eyes?)  The link
> could use a little tuning to take a bit more heavier load in the final.
> I've modified  one of my 80m B&W HDVL plug-in coils and removed two
> turns on each side (4 turns, total), to raise the plate current a bit,
> because the Q is a bit sharp in that circuit.  A breif excursion
> off-resonance, w/1.5kWDC on the plates, draws around 550mA.  At
> Resonance (with 125mA of grid drive) the thing dips to around 200mA.
> That said, what value of series capacitance would you suggest/recommend
> to tune the link?
>
> > Plate neutralisation, using the same kind of tank circuit as a
> > pushpull final, and single ended grid tank, works better over a wider
> > freq range, because the plate-to-ground capacitance is usually much
> > less than the grid-to-ground capacitance, and capacitance across one
> > side of the tank circuit upsets the balance of the circuit.  Also,
> > grid  loading effects cause some additional unbalance, even if the
> > capacitance is perfectly balanced out with additional fixed
> > capacitors.  The pushpull circuit works best of all, since it is
> > inherently a balanced bridge circuit, and theoretically works equally
> > well over an extremely wide frequency range.  Limitations lie in the
> > precision of the balance of the split stator tank capacitors from
> > minimum to maximum capacitance.
>
>
> In my rig, the neutralizing caps come from the crossed grid-input lines,
> and big silver disks mounted on screws on the back end of the B&W
> bread-slicer butterfly tuning capacitor are what nulls out the
> differences in capacitances in the two tubes.  However, I know it is
> possible to use a single tube in the final, like K5SWK's single 833,
> modulated by a pair.  I -think- Otis is using a big capacitor in place
> of the 2nd tube and he's able to maintain a balanced tank circuit.  I
> had him on the phone earlier, but we didn't talk about rigs.
> Looking forward to your reply and info.
>
> That should read better.
>
> -Geoff
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM List Admin: Brian Sherrod/w5ami

Re: [AMRadio] The zeal to eliminate AM mode on the amateur bands.

[Byron Lichtenwalner]

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 have gone back to my
model airplanes without AM to lite my fires for a hobby that's kept me
involved for more thwn 50 years.

Byron, W3WKR

Re: [AMRadio] how-to fix a ceramic/metal air variable capacitor

[Byron Lichtenwalner]

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 PROTECTED]>
To: <[EMAIL PROTECTED]>; ;
<[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Wednesday, August 24, 2005 11:56 PM
Subject: [AMRadio] how-to fix a ceramic/metal air variable capacitor


> This is not specifically related to either list, but I thought I would
show
> how I just fixed a snall transmitting air variable cap. I hope it is
> helpful to anyone who has had this happen. If nothing else, it saved me
> from having to use a substitute or take one from another complete radio
set.
>
> Repairing the cap:
> http://rawfire.torche.com/~opcom/caprep/index.html
>
> Here is a rack of nice ITT FAA AM and GE FM commo gear I just put
together.
> http://rawfire.torche.com/~opcom/uvrack1/index.html
>
> It's too hot outside, so been playing indoors...
>
> Patrick
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net

Re: [AMRadio] Re: How can we rid the HF bands of AM ?

[Byron Lichtenwalner]

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

Re: [AMRadio] power ratings

[Byron Lichtenwalner]

Ed
Shows you what high level modulation can do, with finals running in Class C
vs. the amp running in linear mode.
Byron, W3WKR

Re: [AMRadio] FSK mods for Valiant

[Byron Lichtenwalner]

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 VFO circuit ,
any change if VFO frequency will also change the shift frequency.

I am not a fan of AFSK.  But if you can generate a carrier with the SSB
adapter, think about keying the BFO  in that section.  Then a single keyer
will give you shift over the entire range, and side band selection will give
you the choice of mark/space signalling.

Byron, W3WKR

Re: [AMRadio] Viking Ranger movement

[Byron Lichtenwalner]

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 and I will see if I
have
> a movement that can be put in yourold case, and use your old dial.
>
> Bill
> - Original Message - 
> From: "kenw2dtc" <[EMAIL PROTECTED]>
> To: "Discussion of AM Radio" 
> Sent: Monday, June 20, 2005 2:16 PM
> Subject: Re: [AMRadio] Viking Ranger movement
>
>
> > "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"
> >
> > Well, more or less Yes:
> >
> >
> > http://w2dtc.com/w2dtc-for-sale-or-swap-page.htm
> >
> > 73,
> > Ken W2DTC
> >
> >
> >
> >
> >
> > __
> > AMRadio mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:AMRadio@mailman.qth.net
> >
> >
> >
> > -- 
> > No virus found in this incoming message.
> > Checked by AVG Anti-Virus.
> > Version: 7.0.323 / Virus Database: 267.7.9/23 - Release Date: 6/20/05
> >
> >
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net

[AMRadio] Viking Ranger movement

[Byron Lichtenwalner]

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@mailman.qth.net
Received: from rwcrmhc14.comcast.net (rwcrmhc14.comcast.net [216.148.227.89])
by mailman.qth.net (Postfix) with ESMTP id 1C4A8859C15
for ; Mon, 20 Jun 2005 13:52:28 -0400 (EDT)
Received: from ken (pcp0010148457pcs.midltn01.nj.comcast.net[68.39.97.103])
by comcast.net (rwcrmhc14) with SMTP
id <2005062017511401400gcs21e>; Mon, 20 Jun 2005 17:51:14 +
Message-ID: <[EMAIL PROTECTED]>
From: "kenw2dtc" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio" 
References: <[EMAIL PROTECTED]><[EMAIL PROTECTED]>
<[EMAIL PROTECTED]>
Subject: Re: [AMRadio] cooking Baxter's goose
Date: Mon, 20 Jun 2005 13:51:02 -0400
MIME-Version: 1.0
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2900.2527
X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2527
X-BeenThere: amradio@mailman.qth.net
X-Mailman-Version: 2.1.4
Precedence: list
Reply-To: Discussion of AM Radio 
List-Id: Discussion of AM Radio 
List-Unsubscribe: ,

List-Archive: 
List-Post: 
List-Help: 
List-Subscribe: ,

X-List-Received-Date: Mon, 20 Jun 2005 17:52:40 -


 Bacon, WA3WDR said:

"This was a compromise.  The move was to 3890, as opposed to the original
3885.  The idea was QSOs could slide toward 3880 during Glenn's broadcast."

Listen to this sound bite and you will hear that there was no compromise at
all:

http://w2dtc.com/sound-bites.htm

73,
Ken W2DTC

[AMRadio] 4-1000 amp

[Byron Lichtenwalner]

Please note!  The Amp is in Washington, near Chattaroy.  
Byron
From [EMAIL PROTECTED]  Thu May 26 08:00:11 2005
Return-Path: <[EMAIL PROTECTED]>
X-Original-To: amradio@mailman.qth.net
Delivered-To: amradio@mailman.qth.net
Received: from web52809.mail.yahoo.com (web52809.mail.yahoo.com
[206.190.39.173])
by mailman.qth.net (Postfix) with SMTP id 83D27859C09
for ; Thu, 26 May 2005 08:00:08 -0400 (EDT)
Received: (qmail 69328 invoked by uid 60001); 26 May 2005 11:49:31 -
Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com;

b=G/Qq8ZJB2d+UKiTJdygtllD9H0aLHRUZhN7WoI2skJf8y0lP5la6havFL57NK0EydA//Fu+2xHKQJbHlw0SeGaoZt+9MugnkPAwrOdhFP5+oL3IbA+FHiLIPayDfo2+bvyOxPHlimvVlvU2EMcaoKk76qErFXtVKCw8pY1zwoxg
   ;
Message-ID: <[EMAIL PROTECTED]>
Received: from [64.236.240.190] by web52809.mail.yahoo.com via HTTP;
Thu, 26 May 2005 04:49:30 PDT
Date: Thu, 26 May 2005 04:49:30 -0700 (PDT)
From: VJB <[EMAIL PROTECTED]>
To: amradio@mailman.qth.net
In-Reply-To: 6667
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Subject: [AMRadio] Pete's playing
X-BeenThere: amradio@mailman.qth.net
X-Mailman-Version: 2.1.4
Precedence: list
Reply-To: Discussion of AM Radio 
List-Id: Discussion of AM Radio 
List-Unsubscribe: <http://mailman.qth.net/mailman/listinfo/amradio>,
<mailto:[EMAIL PROTECTED]>
List-Archive: <http://mailman.qth.net/mailman/private/amradio>
List-Post: <mailto:amradio@mailman.qth.net>
List-Help: <mailto:[EMAIL PROTECTED]>
List-Subscribe: <http://mailman.qth.net/mailman/listinfo/amradio>,
<mailto:[EMAIL PROTECTED]>
X-List-Received-Date: Thu, 26 May 2005 12:00:11 -

Pete,

I can't remember making any requests to the League
that would be of benefit only to myself.

It's kinda like filing comments with the FCC, some
people talk a lot, some people take action.

Have you ever participated on behalf of the hobby in a
rulemaking proceeding, Pete? I can't find you anywhere
listed. Maybe you're too busy defending the League to
actually, uh, take some action.

Best wishes,

Paul



--- [EMAIL PROTECTED] wrote:
> Send AMRadio mailing list submissions to
>   amradio@mailman.qth.net
>
> To subscribe or unsubscribe via the World Wide Web,
> visit
>   http://mailman.qth.net/mailman/listinfo/amradio
> or, via email, send a message with subject or body
> 'help' to
>   [EMAIL PROTECTED]
>
> You can reach the person managing the list at
>   [EMAIL PROTECTED]
>
> When replying, please 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 Lichtenwalner)
>
>
>
--
>
> Message: 1
> Date: Wed, 25 May 2005 15:38:19 -0400
> From: peter markavage <[EMAIL PROTECTED]>
> Subject: Re: [AMRadio] Hudson Communicates
> To: amradio@mailman.qth.net
> Message-ID:
> <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset=us-ascii
>
>
> On Tue, 17 May 2005 05:46:29 -0700 (PDT) VJB
> <[EMAIL PROTECTED]> writes:
> > Okay Pete, so the Hudson Division communicates.
> >
> > If their example were followed by the other 95
> percent
> > of the "system" I wouldn't have a complaint and
> > neither would so many other disappointed people
> who
> > wish to support the League.
>
> If your Director and Vice Director are not doing
> their job, vote someone
> in who will. Their terms only last 3 years.
> >
> > Instead, we see every possible effort to keep it a
> > closed door Masonic-style secret club whose
> activities
> > are presented to members to react to, not to
> > participate in.
>
> Funny, with all your "posts" here, there, and
> everywhere, it seems you
> are participating, but, for some reason, you desire
> that one-on-one
> personal attention direct from Newington. If
> everyone wanted that
> "personal" attention, they would probably have to
> hire more staff.
>
> Pete, wa2cwa
>
>
> --
>
> Message: 2
> Date: Thu, 26 May 2005 00:22:21 -0400
> From: "Byron Lichtenwalner" <[EMAIL PROTECTED]>
> Subject: [AMRadio] Home Brew 4-1000 amp
> To: "Discussion of AM Radio"
> 
> Message-ID: <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset=iso-8859-1
>
> From: "Byron Lichtenwalner" <[EMAIL PROTECTED]>
> To: "amradio@mailman.qth.net&q

[AMRadio] Home Brew 4-1000 amp

[Byron Lichtenwalner]

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=5775631689&ssPageName=ADME:B:EOAB:US:6
 )
, only to find I had misunderstood the shipping costs.  It is now mine, but
stranded in Arizona.

If anyone is interested, make me an offer.  The best offer will get it, but
you get to pay the shipping, or better pick it up.  It's a 400 pound
(approximate) monster.

Private responses please to [EMAIL PROTECTED]
Best offer by Friday at 8 A.M. gets it.
Byron, W3WKR

Re: [AMRadio] Power Resistor

[Byron Lichtenwalner]

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

Re: [AMRadio] Power Resistor

[Byron Lichtenwalner]

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.


Think I am all set now.  Thanks for all the suggestions.

Byron, W3WKR 

Re: [AMRadio] Power Resistor

[Byron Lichtenwalner]

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

Re: [AMRadio] AM Amps

[Byron Lichtenwalner]

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 

Re: [AMRadio] WTB: Millen 90801 Exciter

[Byron Lichtenwalner]

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 changing
coils in the final when I forgot to turn off the B+.

There was also a tubeless VFO that plugged into the 5763 that kind of
drifted around the band.  A Heath VFO was put in place to address that
problem.

Big project for a 16 or 17 year old than.

Byron, W3WKR

Re: [AMRadio] You Won't Believe This

[Byron Lichtenwalner]

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: "Discussion of AM Radio" 
Sent: Saturday, January 01, 2005 8:45 PM
Subject: Re: [AMRadio] You Won't Believe This


> Sorry John, but that is not the answer.  I did clean the face.  Besides
> that, the meters of the 20V-3 are behind a glass panel to avoid accidental
> contact with the meter zeroing adjustment.
>
> Nope, this is definitely a weird problem that occurs when you attach the
B+
> lead and just one lead.
>
> Thanks
>
> Dave, W3ST
> Publisher of the Collins Journal
> Secretary to the Collins Radio Association
> www.collinsra.com
> Nets:  3805 Khz, Monday/Wednesdays 8 PM EDST
>   14250 Khz Saturday, 12 Noon EDST
>
> - Original Message -
> From: <[EMAIL PROTECTED]>
> To: 
> Sent: Saturday, January 01, 2005 9:05 PM
> Subject: Re: [AMRadio] You Won't Believe This
>
>
> > Static charge on the case?  Disassemble and wash carefully with fine
dish
> > soap. Dry carefully with a paper towel and let it set a day until all
> moisture is
> > sure to be gone. Take precautions not to build up another charge when
> > reinstalling.
> >
> > You might just wipe the face carefully and see if that has any effect
but
> if
> > it has a big charge built up, you may have to mproceed as above.
> >
> > 73 and Happy New Year.
> >
> > John,  W45AWM
> > __
> > AMRadio mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:AMRadio@mailman.qth.net
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net

Re: [AMRadio] Early version Johnson Ranger I

[Byron Lichtenwalner]

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 10 watt
carbon resistors in a voltage divider to feed the 6al5 to generate the -40
volts for the keyer.

If you considering modifications, look at W3AM and WA2HLR changes.  I have
made those changes and am within a week or so of completing then.  BTW, they
also have a PTT circuit if you going AM

Byron, W3WKR
- Original Message - 
From: "Frank" <[EMAIL PROTECTED]>
To: 
Sent: Saturday, January 01, 2005 2:19 AM
Subject: [AMRadio] Early version Johnson Ranger I


> Happy New year to all.
>
> I am in the process of restoring a Johnson Ranger I.  I obtained part of
the
> manual and a schematic.  That's when I noticed that two of the tubes were
> "missing."  The tubes are the 6AL5 bias tube and the 12AU7 keyer tube.
>
> My mystery was solved when I learned that the earliest version of the
> Johnson Ranger I used cathode keying and omitted the circuits around the
> 6AL5 and the 12AU7.  I have since downloaded the schematic for this early
> version Ranger from the bama web site.
>
> I would like to obtain a manual for this early version of the Ranger.  I
> have written W7FG to see if he has them available.  So far, no answer.
>
> So can anybody help me out?  Obviously I'd be happy to pay for the
copying,
> postage and the trouble.
>
> A second question is whether I should refit this old Ranger to bring it up
> to the later version standard.  Makes sense from an operational
standpoint,
> but what's the feeling about keeping this Ranger preserved as the early
> version.
>
> Thanks and 73,
> Frank, W7ND
>
> P.S.  The serial # on my Ranger I is 622.
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net

Re: [AMRadio] Antenna Tuner Wonderings

[Byron Lichtenwalner]

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, W3WKR
- Original Message - 
From: "Merz Donald S" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>;

Sent: Tuesday, December 14, 2004 11:39 AM
Subject: RE: [AMRadio] Antenna Tuner Wonderings


The antenna inventory at ARS N3RHT:

Radio works 80M Windom, one end in the attic and the other end in a tree at
the far corner of the property, with ends drooped down to fit the space, fed
with coax

Homebrew vertical dipole, about 40 feet total length, stuck upright in a big
ole pine tree and held lovingly in place by the tree's branches, fed with
450 ohm ladder line to a Heathkit B-1 balun and then coax into the shack.

Butternut HF-6V with the 160 meter option, on top of a 30 foot pole with a
home-made counterpoise following plans published in CQ. Some of the
counterpoise wires have broken. Fed with coax.

Homebrew from one of the W6SAI books 10-15-20 multi-band meter dipole in the
attic, center is Van Gordon 1:1 balun, tuned to resonance using MFJ 259, and
fed with coax

The other stuff is VHF or too junky to be worth mentioning. In a few weeks,
I will put up that 1977 NOS trap dipole that I mentioned.

My house is on a small, suburban lot, but that lot sits on the highest point
for 20 miles in all directions.

Anywaythat's what I'm working with here.
All ideas appreciated.
73, Don Merz, N3RHT





-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Monday, December 13, 2004 5:59 PM
To: Merz Donald S; [EMAIL PROTECTED];
amradio@mailman.qth.net
Subject: Re: [AMRadio] Antenna Tuner Wonderings


Don,

What kind of "crappy" antennas are you using, i.e., doublets fed with coax,
open wire lines, etc., or end-fed wires?  Or, some combination of types
maybe?

Rather that building up a bunch of tuners you might consider putting your
efforts into erecting a set of antennas that all worked directly off a 50 or
75 ohm coax feedlines.  Half-wave dipoles, one for each band, for example,
or one or more of the multi-band arrangements (G5RV, fan and trap dipole,
etc.).

Dennis D. W7QHO
Glendale, CA

The information contained in this e-mail may be confidential and is intended
solely for the use of the named addressee.
Access, copying or re-use of the e-mail or any information contained therein
by any other person is not authorized.
If you are not the intended recipient please notify us immediately by
returning the e-mail to the originator.(A)
__
AMRadio mailing list
Home: http://mailman.qth.net/mailman/listinfo/amradio
Help: http://mailman.qth.net/mmfaq.html
Post: mailto:AMRadio@mailman.qth.net

Re: [AMRadio] Frequency Response

[Byron Lichtenwalner]

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

Re: [AMRadio] Re: AMRadio Digest, Vol 6, Issue 45

[Byron Lichtenwalner]

Mahlon
Made the adjustment as per the instructions.  After a bit of fiddling, it
now switches to all three VFO positions.  Will start the reassembly process
now!

Thanks again.

Byron
- Original Message - 
From: "Mahlon Haunschild" <[EMAIL PROTECTED]>
To: 
Sent: Saturday, July 31, 2004 9:41 AM
Subject: [AMRadio] Re: AMRadio Digest, Vol 6, Issue 45


>
> Byron,
>
> I've some experience at this.  Problems I've seen:
>
> -  Dry/congealed lubricant in the VFO bandswitch shaft bushing (ANY
> friction in the VFO switch will stop the mechanism cold)
> -  Imperfect machining of the drive cam, making the pins bind up instead
> of passing through
> -  Height/depth of the drive cam set wrong
> -  Drive arm too far away or too close to the drive cam
> -  Registration off (e.g. VFO set for 11 meters when the rest of the
> bandswitch isn't).  The VFO switch has three positions:  160, 80 thru
> 10, and 11.
> -  Broken VFO switch (God forbid)
>
> Is your problem any of these?  I have a Ranger assembly manual that
> contains the complete set-up procedure for this, but lets try to
> eliminate the obvious first.  Your problem 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.
> > ------
> >
> > Message: 1
> > Date: Sat, 31 Jul 2004 00:34:25 -0400
> > From: "Byron Lichtenwalner" <[EMAIL PROTECTED]>
> > Subject: [AMRadio] Viking Ranger Bandswitch-VFO linkage
> > To: 
> > Message-ID: <[EMAIL PROTECTED]>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > Hello Friend
> > I am in the process of restoring a Ranger I.  The bandswitch does not
switch to the 11 meter position at the last clockwise click of the
bandswitch.  Is there a prescribed set-up procedure for this mechanical
linkage?
> >
> > Byron, W3WKR
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net

Re: [AMRadio] Viking Ranger Bandswitch-VFO linkage

[Byron Lichtenwalner]

Ronnie
Thanks for the reply.

No, the switch/knob do not go another notch counter-clockwise from the 160
meter position.  Thanks good ness!

Byron
- Original Message - 
From: "ronnie.hull" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio" 
Sent: Saturday, July 31, 2004 9:54 AM
Subject: Re: [AMRadio] Viking Ranger Bandswitch-VFO linkage


> Byron
> check and see if it goes PAST 160 meters the other way, if so, your knob
> is one detent off. This could be baa...
>
> if that is not it.. there is probably something wrong with the 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: Sat, 31 Jul 2004 00:34:25 -0400
> Subject: [AMRadio] Viking Ranger Bandswitch-VFO linkage
>
> > Hello Friend
> > I am in the process of restoring a Ranger I.  The bandswitch does
> > not switch to the 11 meter position at the last clockwise click of
> > the bandswitch.  Is there a prescribed set-up procedure for this
> > mechanical linkage?
> >
> > Byron, W3WKR
> > __
> > AMRadio mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:AMRadio@mailman.qth.net
> --- End of Original Message ---
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
>

Re: [AMRadio] Re: AMRadio Digest, Vol 6, Issue 45

[Byron Lichtenwalner]

Hello Mahlon
Thanks for the check list, but no.  I have checked the things you listed,
and they are not the problem I am dealing with at this point.

The cam is well lubricated and the pin passes freely in moving from the
160-80 meter position to the 40 and up position.  there is no engagement of
the pin from the 40-10 meter position to the 11 meter position.  That's why
I was looking for the "official" set up procedure.

I don't know about the height of the cam above the chassis and it starting
position with the vfo switch in the 160-80 meter position.  If I knew that
was right, I could get the lever with the pins set by trial and error.  Just
trying to verify the starting position.

Thanks for the check list.  At least can eliminate some potential problems.

Byron W3WKR
- Original Message - 
From: "Mahlon Haunschild" <[EMAIL PROTECTED]>
To: 
Sent: Saturday, July 31, 2004 9:41 AM
Subject: [AMRadio] Re: AMRadio Digest, Vol 6, Issue 45


>
> Byron,
>
> I've some experience at this.  Problems I've seen:
>
> -  Dry/congealed lubricant in the VFO bandswitch shaft bushing (ANY
> friction in the VFO switch will stop the mechanism cold)
> -  Imperfect machining of the drive cam, making the pins bind up instead
> of passing through
> -  Height/depth of the drive cam set wrong
> -  Drive arm too far away or too close to the drive cam
> -  Registration off (e.g. VFO set for 11 meters when the rest of the
> bandswitch isn't).  The VFO switch has three positions:  160, 80 thru
> 10, and 11.
> -  Broken VFO switch (God forbid)
>
> Is your problem any of these?  I have a Ranger assembly manual that
> contains the complete set-up procedure for this, but lets try to
> eliminate the obvious first.  Your problem 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.
> > ------
> >
> > Message: 1
> > Date: Sat, 31 Jul 2004 00:34:25 -0400
> > From: "Byron Lichtenwalner" <[EMAIL PROTECTED]>
> > Subject: [AMRadio] Viking Ranger Bandswitch-VFO linkage
> > To: 
> > Message-ID: <[EMAIL PROTECTED]>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > Hello Friend
> > I am in the process of restoring a Ranger I.  The bandswitch does not
switch to the 11 meter position at the last clockwise click of the
bandswitch.  Is there a prescribed set-up procedure for this mechanical
linkage?
> >
> > Byron, W3WKR
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net

[AMRadio] Viking Ranger Bandswitch-VFO linkage

[Byron Lichtenwalner]

Hello Friend
I am in the process of restoring a Ranger I.  The bandswitch does not switch to 
the 11 meter position at the last clockwise click of the bandswitch.  Is there 
a prescribed set-up procedure for this mechanical linkage?

Byron, W3WKR
From [EMAIL PROTECTED]  Sat Jul 31 09:46:04 2004
Return-Path: <[EMAIL PROTECTED]>
Delivered-To: amradio@mailman.qth.net
Received: from lakermmtao04.cox.net (lakermmtao04.cox.net [68.230.240.35])
by mailman.qth.net (Postfix) with ESMTP id AE9928582AF
for ; Sat, 31 Jul 2004 09:46:02 -0400 (EDT)
Received: from cox.net ([68.228.24.58]) by lakermmtao04.cox.net
(InterMail vM.6.01.03.02.01 201-2131-111-104-103-20040709) with ESMTP
id <[EMAIL PROTECTED]>
for ; Sat, 31 Jul 2004 09:41:41 -0400
Message-ID: <[EMAIL PROTECTED]>
Date: Sat, 31 Jul 2004 08:41:47 -0500
From: Mahlon Haunschild <[EMAIL PROTECTED]>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US;
rv:1.4) Gecko/20030624 Netscape/7.1 (ax)
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: amradio@mailman.qth.net
References: <[EMAIL PROTECTED]>
In-Reply-To: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
Subject: [AMRadio] Re: AMRadio Digest, Vol 6, Issue 45
X-BeenThere: amradio@mailman.qth.net
X-Mailman-Version: 2.1.4
Precedence: list
Reply-To: [EMAIL PROTECTED],
Discussion of AM Radio 
List-Id: Discussion of AM Radio 
List-Unsubscribe: <http://mailman.qth.net/mailman/listinfo/amradio>,
<mailto:[EMAIL PROTECTED]>
List-Archive: <http://mailman.qth.net/mailman/private/amradio>
List-Post: <mailto:amradio@mailman.qth.net>
List-Help: <mailto:[EMAIL PROTECTED]>
List-Subscribe: <http://mailman.qth.net/mailman/listinfo/amradio>,
<mailto:[EMAIL PROTECTED]>
X-List-Received-Date: Sat, 31 Jul 2004 13:46:04 -


Byron,

I've some experience at this.  Problems I've seen:

-  Dry/congealed lubricant in the VFO bandswitch shaft bushing (ANY
friction in the VFO switch will stop the mechanism cold)
-  Imperfect machining of the drive cam, making the pins bind up instead
of passing through
-  Height/depth of the drive cam set wrong
-  Drive arm too far away or too close to the drive cam
-  Registration off (e.g. VFO set for 11 meters when the rest of the
bandswitch isn't).  The VFO switch has three positions:  160, 80 thru
10, and 11.
-  Broken VFO switch (God forbid)

Is your problem any of these?  I have a Ranger assembly manual that
contains the complete set-up procedure for this, but lets try to
eliminate the obvious first.  Your problem 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.
> ------
>
> Message: 1
> Date: Sat, 31 Jul 2004 00:34:25 -0400
> From: "Byron Lichtenwalner" <[EMAIL PROTECTED]>
> Subject: [AMRadio] Viking Ranger Bandswitch-VFO linkage
> To: 
> Message-ID: <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hello Friend
> I am in the process of restoring a Ranger I.  The bandswitch does not switch 
> to the 11 meter position at the last clockwise click of the bandswitch.  Is 
> there a prescribed set-up procedure for this mechanical linkage?
>
> Byron, W3WKR