There are so many " What if's" that only guessing works well. There are also
" Shunt Trip" breakers that break with say 50 mills to cut a 20 amp circuit.
Usually we think of a breaker with a bi-metal strip heating and curling out
of the way at a certain temp caused by over current. Some even reset
the meter you describe is from a Johnson 6 and 2. It would need no repair.
it looked neat in the 6N2 mounted up side down.
- Original Message -
From: "Rick Brashear" <[EMAIL PROTECTED]>
To:
Sent: Friday, November 24, 2006 11:31 PM
Subject: [AMRadio] Meter
> I am in search of info on a m
The changes in the R&O will take effect Friday,
December 15, at 12:01 AM EST, 30 days after its publication.
__
AMRadio mailing list
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Partner Website: http://www.amfone.net
Help: h
ot be exceeded or the thing will become a magnet and not work.
Saturation, I think they call it!
Hope this hepls a little. 73 Mike
- Original Message -
From: "Jack Schmidling" <[EMAIL PROTECTED]>
To: "Mike Dorworth, K4XM" <[EMAIL PROTECTED]>; "Dis
- Original Message -
From: "crawfish" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio in the Amateur Service"
Sent: Friday, November 17, 2006 7:54 PM
Subject: Re: [AMRadio] Ranger Audio... the numbers
> Impedance at the plates is more than 50 ohms.
Some measurements:
Ranger modulat
Jim I do not know the laws but all new dryers have four wire cords. Only the
old ones are three. The ground wire would need to be twice as big as either
hot wire. By the codes I don't think you can use a neutral for fault
current. At the box, the neutral and ground are tied together. Most stoves
an
Let me add that a 6L6GC is rated at higher voltage and I suppose the 5881
military 6L6 is rated for more volts and would make a dandy substitue for
the 1614.. 73 Mike
- Original Message -
From: "uvcm inc." <[EMAIL PROTECTED]>
To: "'Discussion of AM Radio in the Amateur Service'"
Sent: F
A 6L6 in any book is listed at 360 volts Maximum. The 1614 is listed at 550
volts ICAS and, of course, the unmodified Ranger uses 550 Volts DC on the
final and modulator. We once had a post that the 1614 is really only a
selected for high voltage service 6L6 and it sounds reasonable to me. In
fact,
Mike
- Original Message -
From: "John E. Coleman (ARS WA5BXO)" <[EMAIL PROTECTED]>
To: "'Mike Dorworth, K4XM'" <[EMAIL PROTECTED]>; "'Discussion of AM Radio in
the Amateur Service'"
Sent: Thursday, August 31, 2006 5:40 PM
Subject: RE: [AM
The trouble with low z microphones is that some times
Once a Hi-Z mike sends it's signal out it needs a short low capacity cable
to keep from effectively shorting the highs. Putting a transformer in the
mike is ok as long as the cord is low capacity and short. The 9 foot cord
sounds like a di
Motorola says the simple measure of placing a piece of pipe over the coax
where it enters the house and bending the coax sharply where it stops it's
downward run and enters the house is good. I KNOW that lightning goes in
straight lines and the few thousand amps on the coax would see the pipe as a
I can see this is the beginning of a long thread since everyone has their
own ideas. In commercial work a sharpened spike above the thing to be
protected is to DRAW the lightning to a well insulated and very well
grounded ground system. This is to protect the equipment below it. To
dissipate, the
In January 1950 CQ magazine page 20 the article " Licking the Regulation
Problem" by Joseph Saugier, Jr. W9KSQ describes a electronic bleeder
resistor , the 2500 volt 400 ma version used a pair of 211 tubes.At that
time 211 were the cheapest tubes in surplus.
- Original Message -
From: "D
811A's take -4.5 volts bias @ 1500 volts and give about 340 watts audio
level. They will take 2000 volts OK since the am rating is 1250 volts ( 2500
volts peak). 9 volts is the standard for 2000 volts I think.The Viking 500
uses 811A at 2000 volt and OK by the tube manufacturer at that time. Since
> The latest and LAST is the 23rd edition. (1987) Bill Orr is SK. Try
E-Pay..
>
>
> - Original Message -
> From: <[EMAIL PROTECTED]>
> To:
> Sent: Friday, June 09, 2006 7:07 AM
> Subject: [AMRadio] Radio Handbook
>
>
> > I am looking for a recient copy of the Radio Handbook anyone know
- Original Message -
From: "Edward B Richards" <[EMAIL PROTECTED]>
To:
Sent: Thursday, June 08, 2006 5:48 PM
Subject: Re: [AMRadio] PA set up using ant analyzer
> Hi Dennis;
>
> I am having trouble resonating the plate tank on the linear amplifier I
> just built. When checking for reson
ECTED]>
To: "'Mike Dorworth, K4XM'" <[EMAIL PROTECTED]>; "'Discussion of AM Radio'"
Sent: Sunday, June 04, 2006 11:12 PM
Subject: RE: [AMRadio] PA set up using ant analyzer
Does it matter the type of tube, 833 or 592 r
Thanks
Brad
-
- Original Message -
From: "uvcm inc." <[EMAIL PROTECTED]>
To:
Sent: Sunday, June 04, 2006 8:13 PM
Subject: [AMRadio] PA set up using ant analyzer
> Does anyone know what value resistor between the plate of and ground for a
> 833 and a 892r, so I can set up the tank using an antenna an
I am certainly learning here. I always thought of a shorting stick as used
in 1 to 5000 watt transmitters (AM TRANSMITTERS) as a guide to put a well
grounded piece of thick braid on the hv points after every thing normally
done has been done to discharge any remaining stuff lurking about. The
groun
Yes. I would not want my life in the hands of an alligator, crocodile or
battery clip. Since you will always use it every time it is best to make it
permanent. That one time you don't could be you last time to EVER need it!
- Original Message -
From: "Rick Brashear" <[EMAIL PROTECTED]>
To:
On a BC-610 using a external VFO, just kill exicitation, ALL METERS fall to
ZERO, the B plus will go to 4000 VOLTS and if you have bypassed the
interlock and touch the link you will be GONE, Forget the meters! Trust the
stick! I know!
- Original Message -
From: "John E. Coleman (ARS WA5
Discharging is not the idea. If all is well it will NEVER discharge
anything. A nail with a good hooked ground strap in a broom handle is
perfect. This is to keep you from making a sudden trip to the hereafter
only. If it should ever actually be called on to work you will normally
holler out the na
. You are not allowed any mistakes with
> 3kv @ almost half an amp.
Half an amp? a well charged capacitor delivers way more than half an
amp. A 12 guage shell goes poof compared to a full cap. being discharged
with the Jesus Stick!
Switch to Safety!ABC..always be careful.
> > How hot is the darn thing -supposed- to get?
For your unit I don't know. I have used hundreds of SOLA Constant Voltage
Transformers, of the 250, 500, 1000, and 3000 watt versions. They were of
the CVH (harmonic neutralized..SQUARE WAVE) and the CVS (SINE wave type).
The 250 watt is impossibl
If I'm not mistaken the BC-939 antenna coupler used with
> the BC-610 transmitter uses a 15 amp meter in the antenna output
> circuitry and the BC-610 is capable of only 400 watts carrier.
Again it is still I squared R so at a TWO OHM load and 15 amps you would
indeed have 450 watts. The way th
I squared R is 31,250 watts. (25 amp). You are going to get the house
breaker before the ammeter pegs. A nice 8 amp would handle 3200 watts and a
ten is handy for 5000 watts.
> 73,
> Rick/K5IZ
>
> Rev. Don Sanders wrote:
>
> >What are you planning to run on AM
> > if you need to go from 1250 wat
- Original Message -
From: "Donald Chester" <[EMAIL PROTECTED]>
> I recall there was a Central Electronics rig that had a no-tune broadband
> output network with a tube type final. They sealed the whole thing in
> something like epoxy, and gave no technical data on how it worked.
Yes but
> Actually there are a number of commercially manufactured tube
> RF finals that DO indded use toroidal transformers.
> Dentron, for one example - they made a number of linear amps
> like that, and they were/are not alone.
>
The Alpha 374 had nothing but toroids. It might be remembered as the lega
I was beaten to the door on this. Actually there is a spot up about one
third wavelength that is 100 ohms,for a perfectly resonate radiator. So it
would be 2 to one and a dandy perfect resonate vertical with over a hundred
radials is about 35 ohms so the magical 1 to 1 is nothing magical. I would
- Original Message -
From: "gwt" <[EMAIL PROTECTED]>
To: "AM Radio List"
Sent: Thursday, April 20, 2006 6:07 PM
Subject: [AMRadio] Correct tuning procedure
> Hi,
> I'm wondering if some "guru" out in AM land can set me straight on how
> to properly tune a long wire using an "L" network
The question was: how to do it with 803's The source listed is the Bill Orr
Handbook. He calls all of the circuits Zero Bias Tetrode Modulators. Even
the 807 and 813 in TRIODE connection is shown with the beam forming plates
grounded. The circuit is about zero bias, and no screen supply. The 803's
- Original Message -
From: "Jose HF Silva" <[EMAIL PROTECTED]>
To:
Sent: Sunday, April 09, 2006 7:21 PM
Subject: [AMRadio] Re: AM filter for an SB-300
> What about DSP or SDR?
The front end IF Filter establishes the overall bandwidth, the DSP would
Narrow that down after the first filt
ct: Re: [AMRadio] Triode connecting 803's for a Modulator
>
>
> >From: "Mike Dorworth, K4XM" <[EMAIL PROTECTED]>
>
> >On page 662 of the 15th Edition of RADIO HANDBOOK by Editor and
Engineers.
> >Paragraph 30-8 the use of 803 in triode connection is
- Original Message -
From: "Bob Deuel" <[EMAIL PROTECTED]>
To:
Sent: Sunday, April 09, 2006 11:52 AM
Subject: [AMRadio] Triode connecting 803's for a Modulator
> I have a bunch of 803's. In the past, I have seen modulator articles
> featuring triode connected 813's. Physically, the 803
From: "Theo Bellamy"
>
> I seem to remember that about 20 years ago some folks were converting 23
> channel CB rigs to use on 10 meters (by legal hams, of course). I think
they
> were just changing four of the xtals in the xtal synth circuit and ending
up
> with 23 channels in the 10 meter band. A
6146 AB-1, 500 volts, 75 watts, 600 Volts, 95 watts, 750 Volts, 120
watts..
I thought the original question was to modulate a Johnson 6N2 which uses a
5894. Usually one uses the same Plate supply for the final as the modulator.
The 6146 gives way too much power for the voltage rating the 6N2 w
807 in class AB1 at 400 volts 36 watts, 500 volts 46 watts, 600 volts 56
watts and 750 volts 72 watts.
Usually subtract 10 to 15 percent for transformer losses etc.
Almost a perfect match for the 6N2 at any voltage used.. Mike
> Just remember if you are going to use a tube phase inverter rather
The circuit is a patented design and appears in the Bill Orr Handbooks, The
CQ Mobile handbooks and others. The circuit is class B and is suitable to
the KW level with 813's and other large tubes. The driving power is low but
the voltage is higher. Also the Jones VHF handbook has several examples o
YES,in fact he could. 100 watts carrier or 80 watts carrier. The power
supply is the limiting factor here. The SB200 with a big fan and an external
power supply could actually run 160 watts carrier. The word Max is actually
maximum. The wimpy supply holds it to about 80 watts. You might like the
s
supplies for voice or CW service. Ever make you wonder that they might
allow 2500 watts input SSB but only 400 for RTTY. AM and RTTY separates the
Men from the boys.. Mike
- Original Message -
From: "Dale Smith" <[EMAIL PROTECTED]>
To: "Mike Dorworth, K4XM" <[EMAI
Short answer. The SB200 uses a pair of 572B/T160L rated at 160 watts each.
AM Linear output can not be more than one half of total dissipation. The
power supplies are usually rated for continous service (AM) at 25 percent of
the peak. For SB220 a 400 watt transformer is used for 2000 watts pep inp
physical exercises will show you the neat way they attach each part.Lotsa
LUCK.. 73 Mike
- Original Message -
From: "DAVID O'NEILL" <[EMAIL PROTECTED]>
To: "'Mike Dorworth, K4XM'" <[EMAIL PROTECTED]>; "'Discussion of AM Radio'"
Se
MY 32V3 includes the cabinet, works real good. Will let go for $4999.99 plus
first class postage from Georgia..
As a bonus, the 32V2 Collins supplied manual will be included for only
$74.99 extra.,with purchase. So as not to forget, order before midnite
tonight.. Operators are standing by.73 M
Yup. He is talking about rebroadcasting hambands to hambands for HIMSELF..
Permitted under aux stations in FCC rules.. Mike
- Original Message -
From: "Warren" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio"
Sent: Friday, March 03, 2006 5:32 PM
Subject: Re: [AMRadio] FM transmitter
> Is
Maximum voltage for the 6L6 is 360 volts. Fot the 1614, it is 500 volts.
That is why the ranger, which uses 500 volts or a bit more uses the 1614
instead of the cheaper 6L6. The 1614 is RF rated as a transmitting tube
while the 1614 is not. A 6L6GC is a pretty close relative.. My $0.02..Mike
-
811/812 CCS phone dis is 27 watts with 82 watts output.
811/812 ICAS phone dis is 40 watts, with 120 watts output
811A/812A CCS Phone dis is 30 watts, with 85 watts output
811A/812A ICAS Phone dis is 45 watts, with 130 watts output.
Per RCA Transmitting tube manuals..Sadly, page 21 is missing f
811/812 CCS phone dis is 27 watts with 82 watts output.
811/812 ICAS phone dis is 40 watts, with 120 watts output
811A/812A CCS Phone dis is 30 watts, with 85 watts output
811A/812A ICAS Phone dis is 45 watts, with 130 watts output.
Per RCA Transmitting tube manuals..Sadly, page 21 is missing f
811/812 are 6.3 volt filament, the T-55 is 7.5 volts..otherwise similar to
the 811 NOT A.. Mike
- Original Message -
From: "Brett gazdzinski" <[EMAIL PROTECTED]>
To: "'Discussion of AM Radio'"
Sent: Tuesday, February 21, 2006 4:08 PM
Subject: RE: [AMRadio] 1930's Old Buzzard Open Rack Tran
Never ever once has it 1000 watts carrier power level PERIOD. So how could
it be reduced? It was 1000 watts or 900 watts INPUT regardless of
effeciency, Class C being the best.. About 700 watts. Without meters to
measure accuractly it was 900 watts INPUT. With a Linear the 1000 watts in
would get y
Hold on there! It was 1000 watts DC input on the meters. With no meters it
was 900 watts maximum INPUT! With class C, High level that could be 70
percent, i.e. 700 watts carrier, with a grid modulated (can you say Linear?)
then it was about 330 watts carrier or maybe even 250 watts.. Eggs are eggs
I have a Millen ad in a 1963 CQ Magazine that says the Red and Black Millen
connectors are for HV and the Brown (yellow) is a special filled bakelite
for RF use ONLY! My friend says the Reds are the best since the Black are
pigmented with carbon to give the black color. Sounds right. Mounted on a
p
> Keep in mind, when you run the 32V2, you should get 80/90 watts
> out in the high voltage position (and should have solid state rectifiers),
> but running an ft101, and others of its ilk, you get about 20 watts out.
My 32V3 gets 107 (exactly) watts out in HV position with 121 volts AC input
and
Not sure exactrly what you want but B&W coil stock 8 tpi number 14 makes a
wonderful tuner for 80 through 10 meter at full power. A piece 3 inch
diameter 8 tpi number 14 is fine for 160 through 10 at full legal power. A
100 pf split stator in the first case a 200 in the second is sufficent for
any
> > > > The tubes all have 2V filaments. The radio has two inputs for a
> >
> > > > filament
> > > > supply, 2V or 2.5V (the 2.5V input merely inserts a series
> > > > resistor). My
> > > > question iswhy did anyone manufacture 2V filament tubes and
>Two volt tube were used in the 19 twent
005)) with ESMTPA id <[EMAIL PROTECTED]> for
amradio@mailman.qth.net; Mon, 19 Dec 2005 15:08:45 -0600 (CST)
Date: Mon, 19 Dec 2005 16:08:43 -0500
From: W3CRR <[EMAIL PROTECTED]>
Subject: Re: [AMRadio] Politically Correct Holiday Greetings
In-reply-to: <[EMAIL PROTECTED]>
To
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 onion and fix it.Use Scotch plastic tape and put er
toget
The way the secondary is wound all the final and lv passes through the
winding so you would have TWICE as much current if you use just the low
voltage taps. BTW the Ranger modulation transformer is (by my measurement)
7083.8 ohms plate to plate primary, 3568 ohms centertaped (892 ohms each
side) s
75 percent is heat, 25 % in feed through power. 24 two watters going to get
nice a warm. (48 watts) best use a FAN!
- Original Message -
From: "John Lawson" <[EMAIL PROTECTED]>
To: "Jim Brannigan" <[EMAIL PROTECTED]>
Cc: ; <[EMAIL PROTECTED]>
Sent: Sunday, October 30, 2005 1:57 PM
Subje
Sure don't want to fight on Sunday..but..most circuits avoid dropping more
that 500 volts across any one resistor, An example is metering circuits
where 1 meg resistors are series to make the total so that no single
resistor drops too much. There can be 5000 volts on the string, just limit
each one
Normal wake up time is one tenth of a second to allow heating of the
filament and charging of the capacitor. To be really certain, let it warm up
a full minute before honking down on it real hard...MIKE
- Original Message -
From: "John Lawson" <[EMAIL PROTECTED]>
To: "Ed Tanton" <[EMAIL PR
Good point. The Ranger modulation transformer is 7500 to 3500 ohms and rated
for about 15 watts audio level. It was used at 32.5 watts for voice service
which is A-OK. As example the famous ART-13 transformer is rated at 50 watts
and we all know that they will do plenty more for VOICE service. The
It seems we're back to where we were. In theory the maximum carrier is
limited to half the tube dissipation. i.e 250 watts. The power supply is
good for about half that amount. This means the Ranger can put out at MAX
around 12 to13 watts. The carrier about 125 watts, the pep output about 500
watt
That would do the bias supply but he is talking about the peak RF voltage to
make the tube work. Peak RF voltage is a hair less that the 130 volts for
grid current less AB-1 operation.
- Original Message -
From: <[EMAIL PROTECTED]>
To: "Discussion of AM Radio"
Sent: Saturday, October 22, 2
For class A audio,with a pentode, you do not need a step down transformer
of 2.66 or 5 to 1 to each half of the secondary. You don't need push- pull,
and it is OK to use cathode bias which can never be used for class B. Zero
Bias Class B triode operation is to save current while idle and take a big
OK, from the top. There are several dozen examples of mobile rigs in QST, CQ
magazine and both the ARRL Mobile Book and both CQ Mobile Handbooks all of
which use a 12AX& in class B, zero bias. So they must work OK. I have run
mobile AM with the 12AX7 modulating a 5763 so there can be no doubt it
wo
The resting current is total for both sections. 10 ma would be 1.5 watts per
section at 300 volts. Peak current is 35 ma total for the two sections.
Works very well. Tube life not a problem. These were used for years in
mobile requiring a total of 100 ma for final, osc and modulator. The last
ten m
>From QST, September, 1952 Class B modulator. The 12AX7 modulator tube
delivers approximately 6 watts output.
>From QST, November, 1951 A Deluxe Mobile Transmitter for 14 and 28 Mc. Two
12AX7s- each tube having similar elements in parallel- operate at zero-bias
in Class B modulator circuit which
>From Radio Amateurs Mobile Handbook, 1st edition edited by Bill Orr, W6SAI.
Page 85. The 12AX7 makes an excelent class B modulator for low powered
mobile transmitters. Operting at 300 volts it requires no bias with a
resting plate current of 10 ma. This is lower than ANY tube capable of
producing
well. there are several dozen examples of this in the mobile handbooksCQ
magazine and QST,both of the CQ books and all five of the ARRL's. It was
done to get lots of audio, very low resting current, ditto 1635, a special
6N7 with zero resting current gives 14 watts sine wave RMS, can be made to
mod
Not sure. Radio Handbook, 17th edition page 682, Utility 2 KW Linear pair
813's GG, also Radio Handbook 23rd edition page 17-6 An 813 Economy
Amplifier for 160 or 80 meters pair 813 GG. Most of the other handbooks show
the tetrode connection that would be applicable to any tetrodes including
813 w
Actually, only one half of plate dissipation. The ICAS dissipation for a
single 813 is 125 watts, CCS is 100 watts.. This is the maximum carrier for
reasonable tube life. Efficiency is low without modulation., increases
during modulation. Limiting factor is one half total dissipation.Sorry but
the
1. William I. Orr, W6SAI, Radio Handbook16th Edition, section 29-8 An 813
Grounded Grid Linear Amplifier
2. William I. Orr, W6SAI, Radio Handbook, 21st edition, chapter 22
3. Bill, Orr. W6SAI (SK) Ham Radio, May 1980 Pages 47, 48, 49,50, 51. ( Ham
Radio Techniques)
The last is the best, uses ze
table by the dog and is broken. Been looking for replacement at CHEAP price.
Perhaps some of the other fellows have this handy, if not, in a coupla weeks
I should be able to get you a copy. 73, Mike
- Original Message -
From: "ronnie.hull" <[EMAIL PROTECTED]>
To: &quo
Correction: it is a 232-620. Paralax error reading handbook!
- Original Message -
From: "Mike Dorworth,K4XM" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio"
Sent: Wednesday, September 21, 2005 10:48 PM
Subject: [AMRadio] Johnson 232-620
Edgewise wound,
The Pi-Net will give a total of 50 db suppresion of harmonics. about 20 in
one spot and 30 in the other. Link couple can pass harmonics to VHF by
capacity coupling, hence the Faraday Shield Links used for same later on.
There is a nice single 450th Pi-Net rig shown in the Editor and Engineers
handb
Edgewise wound, 1/4" copper strip, cadmium plated, glass bonded mica supporting
bars. Widely used commercially. Safely handles more that 1000 watts. 232-622
winding 8 5/16" Long, 4" ID. 84 Microhenry.
From [EMAIL PROTECTED] Wed Sep 21 23:06:30 2005
Return-Path: <[EMAIL PROTECTED]>
X-Original
26-3 is 14 uH and is good for a lot more goo that that.
>
> Bob W6TR
> - Original Message -
> From: "Barrie Smith" <[EMAIL PROTECTED]>
> To: "Mike Dorworth, K4XM" <[EMAIL PROTECTED]>; "Discussion of AM Radio"
>
> Sent: Wednesday, S
22.5 microhenry, 27 1/2 turns, 1 KW of modulated energy to 30 MHz.
- Original Message -
From: "Barrie Smith" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio"
Sent: Wednesday, September 21, 2005 9:25 PM
Subject: [AMRadio] Johnson 226-1
Hello All:
Anyone have the specs on the Johnson 226
Hey Joe, that's 140 degrees F without the thermostat being necessary!. Great
Idea!
- Original Message -
From: "Joe A. Taylor" <[EMAIL PROTECTED]>
To:
Sent: Sunday, September 18, 2005 2:09 PM
Subject: Re: [AMRadio] Drying out HV transformers / Chokes
> I'm sure may be too simplistic to w
T-8321 Line to P.P. grids of 46, 210, Class B, etc. 500 ohms to 5100 ,
ratio1:3.2 . 2 lbs. also 500 to 12,5000 ohms, ratio 1:5. 3 inches high 2.5
inch wide 2.5 inches deep , mounting centers 2.7/8 inches. from Catralog
#400
- Original Message -
From: "Mark Foltarz" <[EMAIL PROTECTED]>
To:
This was covered in QST for February 1963. page 16-17
The methode discussed uses a center tapped transformer and a full wave
rectifier. The choke is placed in series with the resistor and the voltages
are adjusted to be the same. The calculations are always at 120 Hz. It is
not necessary for the v
> However, highly non-efficient.
>Actually not TRUE. The total power pulled from power supply determines
effeciency. A low level and linear consumes less power for same carrier
power. See some KW mobile rigs from years ago.
also I remember WCKY had 50 watts modulated carrier ( 2 megawatts pe
You will get lots of answers. the short and correct answer is 100 watts
carrier with peaks to 400 watts. I run a similar one at 150 watts carrier
for short periods. The reason the ricebox drops to 25 watts is because it is
100 pep am under those conditions about 17 watts is what I use to drive my 3
If any person fails to pay an assessment of a forfeiture penalty
determined under subparagraph (A) of this paragraph, after it has become a
final and unappealable order or after the appropriate court has entered
final judgment in favor of the Commission, the Commission shall refer the
matter to the
And does the FCC have the authority and the power to actually
"take" money from him?
-
in fact they do. You should read 47USC section 503. They are limited to
$25,000 each day for each violation. Depending upon the number of violations
this can add up quickly!
The way it works, the Attorney
This is normal. The cold resistance is always much less than normal. In a
transmitting tube it is called in-rush. For the larger tubes some sort of
protection is usually used, or at least a filament transformer no larger
than necessary. The tube you are using has a 117 volt filament. 73 Mike
-
>From the Thordarson Catalog:
Chokes, Universal Swinging and Smoothing
T-20C51 5/25 MA15/35 Hy
T-20C53 60/100 MA 8/17 Hy
T-20C64 100/150 MA 3/7Hy
T-20C55 150/300 MA 2/9Hy
T-20C49 200/250 MA 4/5Hy
T-20C56 250/375 MA 4/8 Hy
From [EMAIL PR
found in ER number 160, September 2002 page 36.. Mike
- Original Message -
From: "DAVID AABYE" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio"
Sent: Monday, April 18, 2005 5:49 PM
Subject: Re: [AMRadio] Keying a Gates BC-1?
> Thanks for the reminder, Bob. I have several years of
> ER
Without a GDO you can use a wavetrap on the Broadcast band. Put the circuit
in the antenna and tune coil for null at low end of band with full cap. The
ARRL L/C/F/ Calculator, formerly known as the Lightning Calculator calls for
about 175 microhenry, on a three quarter inch form, it would take a wi
The 5100B was plug and play with the 51SB-B Sideband Generator. I had one
of each and the 6100 too! Best I remember that is the main difference. Mike
K4XM
>
> -- Original Message --
> From: George KB2Z <[EMAIL PROTECTED]>
> Reply-To: Discussion of AM Rad
heath called it " linear master oscillator" first used in the sb300 rx..
- Original Message -
From: "Jim candela" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio"
Sent: Sunday, March 13, 2005 12:22 PM
Subject: RE: [AMRadio] need help with tranmitter design
> Ed,
>
> One option would
well, I thought it was a Olds 442 from about 1966 or so. Four BBl carb, 4 on
the floor and dual exhausts..442..would leave about the same dust as a pair
of 4-400s would on 75M.. Mike
- Original Message -
From: <[EMAIL PROTECTED]>
To:
Sent: Monday, February 14, 2005 2:21 PM
Subject: Re: [A
Far be it from me to be a power line expert. However the glowing red spot
means it is: 1. About to burn out or 2. About to BLOW UP! I would leave the
sledge hammer work to the paid professionals.. 73 Mike
>
>
>
> Jim:
> get you a sledge hammer and while listening to ur radio smack the pole a
> few
QST Magazine for February 1956, on page 39 in the Technical Topics Section
has a very nice article explaining Linear Amps and AM operation
The Carrier never goes away and the thing runs cooler while talking when the
efficiency goes up!.
The tubes must have twice the dissipation of the carrier ou
the old Heathkit vector scope has a switch and leads that come directly from
the plates, makes an instant scope for monitoring.. Mike
- Original Message -
From: "Peter Markavage" <[EMAIL PROTECTED]>
To:
Sent: Thursday, January 13, 2005 2:22 AM
Subject: Re: [AMRadio] Scopes
> Almost any
Since we are talking safety and AM radio, as a more than fifty year ham let
me tell you that the below stuff is true. Also remember: Turn off the b plus
when neutralizing a pair of 813..ask me how I know...DO not jump out the
interlocks on a BC610 then turn of the external VFO, then after observing
Boy are we down to the nity grity now!. Since one reactance is positive and
the other negative that is leading and lagging or Eli the Ice Man so to
speak, when they are added and the real componets are equal but the sines
are opposite they CANCEL.. Happy New Year.. 73, Mike, K4XM
- Original Mes
Yup, thas rite! In or on a Windom, the idea is to find that spot where the
antenna is resonant AND the feedline is attached to a piurely resistive
point so that to SWR exists. This is the reason a properly made Windom has
no feed line length restriction. The fact that it works as a resonant
antenna
Okay, let us try again. I thought the question was.." how can it be
RESONANT" at more than one place..Mr. Windom clearly shows that it is and
how to prove it. A antenna cut for twenty works great on 10, a forty meter
job works great on twenty and ten, an 80 meter works 80-40-20-10 etc. It is
always
In QST magazine for September 1929 the original Windom Antenna article
starts on page 19. It clearly shows that it is exactly resonant on all of
it's design bands, so long as there is an harmonic relationship. 80-40-20-10
etc. There are diagrams included which show how this is determined with an
RF
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