Hi Jim,
My understanding was.
Under the old rules stage or stages, that provide output to the antenna,
total power should not exceed 1000 watts DC input. This includes the sum of
the driver and final in the case of GG output circuit.
I think that rule was tested.
John, WA5BXO
So I know that weird stuff does exist.
John, WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Bob Deuel
Sent: Thursday, February 16, 2006 6:05 PM
To: 'Discussion of AM Radio'
Subject: [AMRadio] Re: AM Transmitter Advice??
Hello Larry an
/tutor.htm
I summarized the events which led to Barton's paper in QST in 1931, followed by
Art Collins paper in 1935 on the benefits of this approach.
http://www.amwindow.org/tech/htm/heisingorwhat.htm
73
John
K5PRO
> Message: 4
> Date: Wed, 15 Feb 2006 18:48:52 -0500
> From
bands.
I prefer the switched coil assembly in a shielded box and mounted under
the chassis myself.
You may find more ideas at
http://wa5bxo.shacknet.nu/wa5bxo.qsl/pptriodes/pptriodes.htm
Good Luck
John, WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf
io it goes. Then - the kit of new (NOS, and/or tested to new spec)
tubes, a thorough RF-IF alignment, and we'll see how the Old Girl does.
I'm hoping to be rather pleasantly surprised - it sure will look pretty,
at any rate!
Cheers
John KB6SCO
h worse before, and I
used it for twenty years. This difference doesn't translate to hugely
gross errors on the dial, and it's livable as-is currently.
Cheers
John KB6SCO
On Fri, 3 Feb 2006, Jim Wilhite wrote:
John is this an R388?
Yassuh. Collins R-388, sn in the 3-digit range, was a Navy rig
originally. I have a copy of the TM for it - but it's silent on the
mechanics (or a picture or schematic) of the PTO. It does have a circuit
description, ho
On Thu, 2 Feb 2006, Jim Wilhite wrote:
the counter. Follow the instructions for alignment.
The Instructions would be at/in/on
URL? Pointer? Secret subterranean Knowledge Vault?
Enquiring minds
Cheers
John KB6SCO
;t do that - it arrived in my care thus disfigured. All is now
well, however.
Cheers
John KB6SCO
PS: THANKS Howard
(equivalent carrier about
20 watts) then this will be a big improvement. If your driver rig is 100
watts carrier and 400 to 500 watts PEP then you will not see a lot of
difference when you go to the 813s linear.
How ever 813s class C plate modulated will run the legal limit easy.
John, WA5BXO
Oops, I hit reply and forgot to remove all the topics in my reply on the
chimney, please accept my regret! Duh!
73
John
K5PRO
something from phosphor bronze
springy stock, or even some old EMI gasket material or finger stock.
John
K5PRO
-Original message-
From: [EMAIL PROTECTED]
Date: Mon, 30 Jan 2006 09:31:09 -0700
To: amradio@mailman.qth.net
Subject: AMRadio Digest, Vol 24, Issue 75
> Send AMRadio mailing l
not need enclosed, "Bud" style
racks.
These will be used to hold my ever-growing horde of BA Stuff - mainly
recievers and related gear.
Shipping will be to Carson City, NV zip 89706.
Pay via PayPal, MO, Cheque, Cash, potatoes, live chickens, etc.
Please get back to me priva
BTW
I would support a RM where all amateur radio licensees should have
to build there on equipment.
That should open up a bucket of worms!!
John, WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John E. Coleman (ARS
WA5BXO)
Sent: Monday
a time and place for all.
John, WA5BXO
around $100 total - then
it's possible that your microphone will need a pre-amp (if it's not
already "powered"). I'd certainly consider the Compressor first, though.
It's an easy 'fix' that might wake up some signals out there - good audio
processing
Just my 200 millidollar...
Cheers
John KB6SCO
on
limited band width audio.
This takes me to the new RMs that or in place. I can see all the sides as
having made good points. And I just don't know what to do. I feel that the
FCC is going to get annoyed at the whole thing and wash there hands of it
and I don't know where that wil
> Message-ID: <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Do you accept PayPal?
> Regards,
> Gary...WZ1M
> - Original Message -
> From: "John Lyles" <[EMAIL PROTECTED]>
> To:
> Sent: Sunday, January 22, 2006 6:01 PM
> > $20 for all, postpaid
> >
> > GE Ham News:
> > RCA Ham Tips:
It's entertaining, if nothing else.
Cheers
John KB6SCO
CBS Laboratories Volumax 400, Automatic Peak Controller
with Manual, $75
Going to Albuquerque Hamfest next weekend, will also have two 12 hy 500 mA
Raytheon power chokes from RA1000 there
73
John
K5PRO
New Mexico
Back Issues of Electric Radio:
#83 (march 96)
#167 (april 03)
#169 (june 03)
#178 (march 04)
#179 (april 04)
#181 (june 04)
$2 each or $10 for all, + postage
73
John K5PRO
Speech Amp using 6AS7G, Bias PS
Sept/Oct 1948 vVIII,n3, NBFM Tx with 2E26 on 10, Hifi
May 1949 vIX,n2, Tiny Tran 10 and 11 meter 5763
July 1949 vIX, n3, Designing Modulators, RCA Voltohmyst
Jan/March 1950 vX,n1, Code Practice Unit, Electronic Keying, Overmod Ind
73
John K5PRO
New Mexico
better driver XFMR as part of the
external circuit and go to the grids directly.
John
Coleman
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Craig Roberts
Sent: Saturday, January 21, 2006 10:19 PM
To: Discussion of AM Radio
Subject: [AMRadio] 32V-2
, etc.
Thanks!
Cheers
John KB6SCO
Our prayers will be about you and family tonight Don. 73
John, WA5BXO
some streets twice in this mans life time. Once was enough to
make me curse and hate lawyers and politicians. HIHI
CUL,
John
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Gary Schafer
Sent: Tuesday, January 17, 2006 8:09 PM
To: 'Discussion
someone's way once and in a while.
John,
WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jim Wilhite
Sent: Tuesday, January 17, 2006 8:34 AM
To: Discussion of AM Radio
Subject: Re: [AMRadio] Web page appears in opposition to RM-1130
Also Jim, you may not need a BFO for CW in the phone band, HIHI.
John, WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of W1EOF
Sent: Monday, January 16, 2006 10:44 PM
To: Discussion of AM Radio
Subject: RE: [AMRadio] Web page appears in opposition
t the heterodyne you cause won't be heard over seas. That should
start an inquiry. Then again, they would probably just take 40 meters
away from us.
John,
WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of W1EOF
Sent: Monday, January 16, 2006 1
nowhere except to a stick to hold it up off of the ground.
It doesn't take a mathematical antenna expert to experiment You only
need some extra wire.
Fun Stuff
John,
WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John Lawson
Sent: Wedn
have an electrically efficient antenna
system as I can, give my particular constraints.
But the question I still have is - what do you think of modifying the
Loop into a dipole - I'm going to try it anyway, just for the halibut -
but I have also thought of replacing the ladder-line with coax and a balun
at the feed point - dunno yet.
Cheers
John KB6SCO
that amount of reflected power.
Cheers
John KB6SCO
t put up a "real antenna" so I'm pretty much comiited to
making this one work as well as I can. Until I move the QTH to somewhere
with a few acres and room for Lots of Wire.
Cheers
John KB6SCO
On Mon, 9 Jan 2006, [EMAIL PROTECTED] wrote:
Sand?? Doesn't this make it solid state??? klc
Well, u - tube envelopes are made out of. ?
Cheers
John KB6SCO
in control
circuit helps a lot with this. I did with out one for years learning how to
talk by watching the scope. But it is a lot nicer and more relaxed when you
have one.
John
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of W5OMR/Geoff
Sent: Monday, Januar
Then, you can blow the sand out, or just leave it in there - won't hurt
the electrical specs of the coil...
Cheers
John KB6SCO
On Sun, 1 Jan 2006, Jim Wilhite wrote:
Thanks Bob, need 25K 10W.
Maybe not helpful: Surplus Sales of Nebraska has this 25K 8W
(RWV) RA50AIRD253
but it's 3" dia and costs $95.
Cheers
John KB6SCO
orgot what your wattage spec was)
Cheers
John KB6SCO
er sideband
and my upper would surely be crossing over when tunning on there frequency
and listening LSB.
Happy New Year to all.
John Coleman
WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of W5OMR/Geoff
Sent: Saturday, December 31, 2005 8:25 A
preciated...
Cheerz and Happy NuYeerz
John KB6SCO
rought in.
"Honey!! Turn that thing off - both our wireless phones just caught on
fire... again!!!"
Cheers
John KB6SCO
who thinks a 20V would look nice sitting where he used to be
able to park one of his cars in out of the snow
transformers, ya just
can't "rewire" them.
Cheers
John KB6SCO
anaything in any of the places I know. BE's site is of no help, since this
machine was made in early 87.
It is a model 900-5502-010. I'd like to find the pinouts for the DB25s
on the back (one for each channel) at least, but a schematic/svc/ops
manual would be cool, too.
Cheer
they list the PTO for the KWM-2 - not the same animal at all.
Only 388 item they seems to have is a manual - and I gots one of them.
There's still the issue of "R&R" - it's not like an R-390... ;{}
Cheers
John
Yours was not full of mud for 2 - 3
years.
John
WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John Lawson
Sent: Sunday, December 25, 2005 3:47 PM
To: amradio@mailman.qth.net
Subject: [AMRadio] R-388 PTO info needed
Further to my Xmas E
to keep it, it's my Fave Reciever - for Ham and SWL -
Also: if you have a quote to perform the above, lemme know ASAP - I'm
'motivated' as they say in Real Estate.
Cheers and Best of the Season!
John KB6SCO
e damn PTO has become an SK on me... damn
Anybody have any experience to the contrary?? It's too late and I'm not
in the mood to dig around in it anymore tonight, but I really love this
radio - been with me 15 years now... ;{
Cheers and have a Merry Christma
the Season
John KB6SCO
which documentation is plentiful on BAMA and elsewhere.
Would prefer to buy originals, or can copy/scan your manuals and then
return them.
Please reply privately OFF-LIST to me.
Cheers and Best of the Season!
John KB6SCO
.
Next project is to get my second Ranger talking to the Ameritron AL80 so I
can get closer to burning my fence down... ;}
Cheers and Best of the Season!
John KB6SCO
In the meantime here is the PST file maybe some else can deal with it.
It is a PST with just the OLDAMRADIO folder from 8/8/2000 to 12/31/2001
http://wa5bxo.shacknet.nu/oldAMradioPST.zip
John,
WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John
I just realize that this export of the old stuff doesn't have dates. That's
weird! Can anyone explain why that would be? It has dates when viewed with
outlook while it is part of a PST, but I can't seem to figure out how to get
the date field to export to a spread sheet or a
Here you go Brian. I included December.
Download from here.
http://wa5bxo.shacknet.nu/oldAMradio.zip
DBF and MDB
John
WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Brian Sherrod
Sent: Friday, December 16, 2005 7:42 AM
To: amradio@mailman.qth.net
My outlook folder for "AMRadio" shows over 10500 entries and goes back
to 8/8/2000 I can export it to
1) a dbase type file,
2) a PST for Outlook,
3) or a ASCI delimited file.
And then zip it up and post it on my server.
Which would you like?
John Coleman
WA5BXO
-Origin
27;ll post them for all the world to see and download so everyone can
benefit.
Thanks John
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Bob Bruhns
Sent: Tuesday, December 13, 2005 5:17 PM
To: Discussion of AM Radio
Subject: Re: [AMRadio] MY new web layou
Sure go ahead
John, WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Tuesday, December 13, 2005 5:46 PM
To: Discussion of AM Radio; Discussion of AM Radio
Subject: [AMRadio] Link to you new web layout
John, looks good. I am
I haven't tried it lately but I had to right click on the link and say "save
target as".
HEY guess what
I found that I had downloaded it some time ago and have a valiant copy at
http://wa5bxo.shacknet.nu/radioeq/Johnson/valiant/
Go get it.
John, WA5BXO
-Original Message---
It was brought to my attention that my web page was really behind and
that I had left out some links to some very important stuff that Bacon
had done so I have corrected it now I hope.
http://www.qsl.net/wa5bxo
and
http://www.qsl.net/wa5bxo/amtech.html
Let me know if it is all OK now.
John
On Sun, 11 Dec 2005, Jim Wilhite wrote:
Use any frequency you choose and move about.
Diety knows there a quite a few hi-power SSB gorillas that follow that
exact approach
Cheers
John KB6SCO
have an easy-to-assemble
solution - dunno. Of course it's easy to sit here and conjecture about
it. ;}
Cheers
John KB6SCO
The 858S is probably 5 kV DC. RF rating is more dependent on the freq and RF
current than voltage. The High Energy HH58 series is 7.5 kV.
John
K5PRO
> Date: Sun, 4 Dec 2005 21:09:12 -0800
> From: Edward B Richards <[EMAIL PROTECTED]>
> Subject: [AMRadio] Data wante
here it lies as of this Weekend - if I have paid my dues
sufficiently I oughta be on the air by the weekend - and I'll be happy,
until I set my fence on fire - snowing or not. ;}
Cheers
John KB6SCO
sive) "answers" so I'm
Learning, which is a good thing.
Cheers
John KB6SCO
On Fri, 25 Nov 2005, Mike Dorworth, K4XM wrote:
Hello John. The filament windings should be on the outside and should be
fairly easy to remove and or replace. I have done it many times. You have
nothing to lose. Drive out a coupla laminations and pull the e and i out.
Then peel it like a
- little QRN and no QRM
(for once)
NOW: Today I'll try and get the Valiant healthy.
What else are 4-day weekends for???
Cheers
John KB6SCO
gh evilly whilst
exclaiming "It's ALIVE!!! It's ALVE!!!"
Damn electronics anyway. O well - need to get the Ranger and the Valiant
working - hopefully this weekend.
Cheers, thanks, and Happy Thanksgiving!
John KB6SCO
ying - I'll make a PDF of it and send you back the
original plus CDR, and pay for the shippin'.
Cheers, and Happy Thanksgiving
John KB6SCO
On Sat, 19 Nov 2005, Patrick Jankowiak wrote:
My friend has to sell his RCA BTA-1R.
I've just called him - (nice guy!) -
He sez it's Sold
"Missed it by That Much...!"
Cheers
John KB6SCO
(who inteded to reply 'to the list' this time... ;}
trying to acquire
something he's been drooling over since he was a Kid...
heheh!!
Cheers
John KB6SCO
Oh, do I love not watching what the 'reply-to' is set for...
sigh
tricrestoration.com
(crappy site, needs work)... so if Scott can help us out on this - I'd be
happy to offer my services to him in return...
Lemme know...
Cheers
John KB6SCO
On Wed, 16 Nov 2005, John Coleman ARS WA5BXO wrote:
I don't know if the power supply come from the same XFMR or not but what
does "10 on the knob" mean?
In the Ranger, the LV feed to it's rectifier is from two equidistant taps
between CT and the 'ends' of th
I don't know if the power supply come from the same XFMR or not but what
does "10 on the knob" mean?
John,
WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John Lawson
Sent: Wednesday, November 16, 2005 8:02 PM
To: Discussion of A
; as Johnson called
it - to go between the Ranger output and linear input.
And of course there a lots of topologies that will accomplish the task of
lowering the output of a tetrode or beam-power RF section without
upsetting the relative current balances.
Mebbe I oughta should by a junker Ranger... Just In Case... ;}
Cheers
John KB6SCO
input supply raises the voltage output just about enough to double the power
or vise versa. Then you could just forget the HV in the Ranger, as for as
plate/screen supply is concerned. Or if a guy was home brewing a modulator
of 20 watts or so, he might just use the PS from it.
John,
WA5BXO
line. Then I placed
a 100 watt lamp in series with a large variable 100 ohm 100 watt resistor to
ground. Not a very efficient thing to do but it did hold the bias steady on
the 805s modulator. This was long before I had access to the HV
transistors, ETC.
John, WA5BXO
-Original Message
conserve your modulation power will allowing the modulator to look into the
same load as it did before.
John,
WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John Lawson
Sent: Wednesday, November 16, 2005 3:22 PM
To: Discussion of AM Radio
Subject
On Wed, 16 Nov 2005, John E. Coleman (ARS WA5BXO) wrote:
The best way is still to reduce the supply voltage at the
plate/screen modulation point. A large resistor that has a bypass cap
across it works well.
As has been wisely pointed out to me - in the case of the Ranger
it to go is when the plate cap is removed. The
meter will still show screen current.
The best way is still to reduce the supply voltage at the
plate/screen modulation point. A large resistor that has a bypass cap
across it works well.
John,
WA5BXO
-Original Message-
From: [
On Sun, 13 Nov 2005, [EMAIL PROTECTED] wrote:
Great. I would LOVE to find a source of that material in the U.S.
Let us know!
Also check out www.schmartboard.com - they have a range of prototyping
stuff aimed at the smaller items...
Cheers
John KB6SCO
That is exactly the way I build a lot of stuff Barrie.
John
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Barrie Smith
Sent: Sunday, November 13, 2005 12:37 PM
To: Discussion of AM Radio
Subject: [AMRadio] Dumber than a rock question . .
Well, guys
;mailto:[EMAIL PROTECTED]>
X-List-Received-Date: Sun, 13 Nov 2005 15:02:32 -
John (W5HG) wrote:
>Thanks Geoff,
> I have figured that much out about the latest rigs. The 100D was really bad.
> I dream of finding a good tube type from some little lady that has one stuck
> up
;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 PROTECTE
soldering
iron... ;}
Cheers
John KB6SCO
a tuner is adjusted correctly, as indicated by the SWR meter, the
transmitter will be loaded just as it was with the dummy load and will
not have to be retuned.
SEE http://www.qsl.net/wa5bxo/swr/swr.htm
John,
WA5BXO
ht now.
Nummer Five - No one's actually *answered* the questions I have
about 'waking up' the amp. (Yet, at any rate.) There has been some very
pertinent and helpful advice, however - much appreciated.
Nummer Six - see Nummer One. Don't curse the QRP - light a
Filament!
Cheers
John KB6SCO
7;m going to use it on AM fone - I'd be
appreciative of the experiences you've (collectively) had.
Cheers
John KB6SCO
tis was ever illegal (OVER 1KW DC input)
HE WAS NOT
John, WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of W5OMR/Geoff
Sent: Wednesday, October 26, 2005 5:43 PM
To: Discussion of AM Radio
Subject: Re: [AMRadio] BC-610 down=up and burnt't finals
grid and heater through the hole and not see the normal
little red glow that was supposed to be there on the plate.
John, WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Wednesday, October 26, 2005 3:58 PM
To: Discussion
Hi John,
Ed is correct. Better to be safe.
The effect of an impedance bump is a relative thing. Higher
frequencies are affected more. The position of the bump on the line
will affect its size.
Having a piece of metal near a low Z point on the tuned line
will have
'm not the brightest bulb in the
marquee when it comes to HF antennae and feedlines.
Cheers
John KB6SCO
is picking up
the radiated RF from the antenna then you will need to do better shielding
and bypassing on the exciter or move the antenna farther away.
John,
WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of W5OMR/Geoff
Sent: Friday, October 21, 200
ooaxial cable match might be used.
John,
WA6BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Edward B Richards
Sent: Tuesday, October 18, 2005 10:27 PM
To: amradio@mailman.qth.net
Subject: [AMRadio] need help
Hi, you guys who are better educated than I
ually much more symmetric
and uniformly built. We selected that source only for our 3 kW 800 MHz
amplifier that we developed. We were unable to get the ST part to play in our
amp without significant retuning.
73
John
K5PRO
> Date: Sat, 8 Oct 2005 08:36:32 -0500
> From: "Ed Swynar
I have checked out a HTX-242 2 meter FM radio for sale and it can be viewed
at
http://wa5bxo.shacknet.nu/mick-KAN%20stuff/
Please send your bids to [EMAIL PROTECTED] or [EMAIL PROTECTED]
Thanks, John, WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
on the output of the
813s.
I though I discovered it. HIHI Didn't realize that it had been
done before I was born.
John, WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John E. Coleman (ARS
WA5BXO)
Sent: Saturday, October 01, 2005 11
I have put an HTX-100 SSB/CW rig up for sale now on the website
http://wa5bxo.shacknet.nu/mick-KAN%20stuff/
Please send your bids to [EMAIL PROTECTED] or [EMAIL PROTECTED]
Thanks, John, WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John E
that he was using. I will place more up as time permits.
http://wa5bxo.shacknet.nu/mick-KAN%20stuff/
Please send your bids to [EMAIL PROTECTED]
Thanks, John, WA5BXO
and efficiency just a little. I really use this position mostly
for CW drive to the push pull 250th rig. But I have occasionally put it on
the air and switched the driver to AM.
John,
WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jim candela
this be reflected back to the modulator
as a varying load and won't all this have to be compensated for while
maintaining phase.
Like you, I just don't think that GG is a thing to do with high
level modulation.
John
-Original Message-
From: [EMAIL PROTECTED]
[ma
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