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Radio is your best entertainment value.
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-Original Message-
From: rbethman <[EMAIL PROTECTED]>
To: Discussion of AM Radio in the Amateur Service
Sent: Sun, 23 Nov 2008 5:57 pm
Subject: Re: [AMRadio] Low Power AM?
Jim
e -
From: John, K5SEE
To: amradio@mailman.qth.net
Sent: Monday, November 24, 2008 6:12 AM
Subject: Re: [AMRadio] Low Power AM?
Just like any other mode, it depends (band conditions, QRM, QRN, etc.) I use
my DX-60 barefoot on a compromise antenna and have made a lot of successful
" de K5SEE
-Original Message-
From: Bob Macklin <[EMAIL PROTECTED]>
To: AM Radio
Sent: Sun, 23 Nov 2008 12:38 pm
Subject: [AMRadio] Low Power AM?
Next question.
?
Many of us have low powered AM transmitters like the small Heath DX series with
some form of screen modulation.
lector.
A very Happy Thanksgiving and --... ...-- to all.
John, WAØSTX/4
- Original Message -
From: "AirRadio" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio in the Amateur Service"
Sent: Sunday, November 23, 2008 3:55 PM
Subject: Re: [AMRadio] Low Power AM?
0m, is Ashtabula Bill, W8VYZ.
73,
Ellen - AF9J
- Original Message - From: "Mike Duke, K5XU" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio in the Amateur Service"
Sent: Sunday, November 23, 2008 2:21 PM
Subject: Re: [AMRadio] Low Power AM?
I've had several
AIL PROTECTED]>
To: "Discussion of AM Radio in the Amateur Service"
Sent: Sunday, November 23, 2008 1:47 PM
Subject: RE: [AMRadio] Low Power AM?
I've read the posts, thank-you all. From my aging memory I believe Bob is
right on target, and yes, rtty can go and go and go. I try to
of AM Radio in the Amateur Service"
Sent: Sunday, November 23, 2008 3:55 PM
Subject: Re: [AMRadio] Low Power AM?
I would think most AM transmitters would not mind running RTTY, after all
most of the ww2 military tx's ran RTTY most of the time anyway, esp in the
RAF here, like the Marc
n the Amateur Service
Sent: Sun, 23 Nov 2008 5:57 pm
Subject: Re: [AMRadio] Low Power AM?
Jim,
I addressed this earlier with my statement that when doing this
"reduction of antenna loading" that THIS puts things into a
NON-RESONANT
state.
The only way to do this AND stay reso
anyone coming thru southcentral kentucy and looking for a couple
vallants i have two in the shack not being used..
73 Tony
QBE ZUT DE WA4JQS
ANTHONY W. (Tony) DePrato WA4JQS EXTRA - HEAVY
Since 1962
CQ DX HALL OF FAME # 35
DXCC HONOR ROLL - 340
A1-OP FISTS # 10573 SKCC #1227 F.O
Jim,
I addressed this earlier with my statement that when doing this
"reduction of antenna loading" that THIS puts things into a NON-RESONANT
state.
The only way to do this AND stay resonant would be SOMETHING outside the
radio that DOES resonate.
The 35 ohm antenna you refer to is typical
How does a SEX CHANGE operation effect the operators voice?
Bob
K5MYJ
- Original Message -
From: <[EMAIL PROTECTED]>
To:
Sent: Sunday, November 23, 2008 3:49 PM
Subject: Re: [AMRadio] Low Power AM?
>
> Typical ricebox should run 25-30 Watts (1/4 to 1/3 of the input power
Typical ricebox should run 25-30 Watts (1/4 to 1/3 of the input power) in
order to sound good and remain linear. (assumes 100 Watt radio).
The sound good part depends on the microphone, rig audio capability and last
but not least, the operators voice characteristics. No amount of processing
wil
Ok I will ask the stupid question(s). What is the purpose of a
output (Pi, Balanced) network? Is it not to transform the plate
load impedance (everyone knows how to calculate this right?) to
whatever the antenna presents to the output of the transmitter. Is
not the rated power calculated at
LOAD capacitor.
And when I am done I DO RECHECK THE GRID DRIVE!
Bob
K5MYJ
- Original Message -
From: "rbethman" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio in the Amateur Service"
Sent: Sunday, November 23, 2008 2:51 PM
Subject: Re: [AMRadio] Low Power AM?
Macklin wrote:
When I say "maintain the dip" I mean I recheck the dip changing the load
capacitor.
Bob
K5MYJ
- Original Message -
From: "Peter Markavage" <[EMAIL PROTECTED]>
To:
Sent: Sunday, November 23, 2008 2:34 PM
Subject: Re: [AMRadio] Low Power AM?
I
Pete,
The specific reference he provided was for the DX-60.
The reduction in loading is followed by checking the grid drive NOT
dipping the plate.
I have the complete condensed copy of the manual from Heath which
includes the HG-10.
I agree with check the dip of the final.
Hence my commen
When I say "maintain the dip" I mean I recheck the dip changing the load
capacitor.
Bob
K5MYJ
- Original Message -
From: "Peter Markavage" <[EMAIL PROTECTED]>
To:
Sent: Sunday, November 23, 2008 2:34 PM
Subject: Re: [AMRadio] Low Power AM?
> I must be mi
I must be missing something in your words Bob (DGN). If, after operating
at some plate current and RF output using a PI network, and now you want
to reduce output, why would reducing the loading and re-dipping the plate
capacitor (to return to resonance), become "non-resonant" unless the
words that
er I ever hear in any amount on 40m,
is Ashtabula Bill, W8VYZ.
73,
Ellen - AF9J
- Original Message -
From: "Mike Duke, K5XU" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio in the Amateur Service"
Sent: Sunday, November 23, 2008 2:21 PM
Subject: Re: [AMRadio
7 PM
Subject: RE: [AMRadio] Low Power AM?
> I've read the posts, thank-you all. From my aging memory I believe Bob is
> right on target, and yes, rtty can go and go and go. I try to keep the
> finals happy. I worked at one am station where the finals were so bad we
> tuned up by c
I've read the posts, thank-you all. From my aging memory I believe Bob is
right on target, and yes, rtty can go and go and go. I try to keep the
finals happy. I worked at one am station where the finals were so bad we
tuned up by color...management was a bit "thrifty"ok,CHEAP!
George wa8sco
I hope you have access to a nice strong youthful helper I hired the local
Boy Scouts to move my boat anchors including the Apache, DX-100, the linears
etc etc. Naturally I supervised closely to prevent any "testosterone" moments.
Of all the rigs only one was damaged and that could have happened
At 02:46 PM 11/23/2008 -0600, Peter Markavage wrote:
Why would RTTY operation be any different then AM operation? And with
rigs like the Viking II, DX-100, Apache, etc., you can probably key down
for many many minutes. i.e. "old buzzard transmission" which are quite
common.
Pete, wa2cwa
You ar
t; <[EMAIL PROTECTED]>
To: "Discussion of AM Radio in the Amateur Service"
Sent: Sunday, November 23, 2008 1:08 PM
Subject: Re: [AMRadio] Low Power AM?
Bob,
I'm NOT Pete. He may feel insulted. LOL
You're using a PI network, NOT a link tuned system. If you reduce
quot;Discussion of AM Radio in the Amateur Service"
Sent: Sunday, November 23, 2008 1:08 PM
Subject: Re: [AMRadio] Low Power AM?
> Bob,
>
> I'm NOT Pete. He may feel insulted. LOL
>
> You're using a PI network, NOT a link tuned system. If you reduce
> loading, AND
of AM Radio in the Amateur Service"
Sent: Sunday, November 23, 2008 12:55 PM
Subject: Re: [AMRadio] Low Power AM?
> The current RICEBOX transceivers generate WITHOUT major distortion is
> about 20W.
>
> That is why:
>
> 1) use of SM-220 with BP-8 (ensuring clean signal)
>
&g
Service"
Sent: Sunday, November 23, 2008 12:48 PM
Subject: Re: [AMRadio] Low Power AM?
Bob,
While the plate transformer may well handle that, you are tuning off
resonance of the PI network. That results in tuning off the Plate dip.
I would NOT imagine that this concept would do the 614
t;Discussion of AM Radio in the Amateur Service"
Sent: Sunday, November 23, 2008 8:55 PM
Subject: Re: [AMRadio] Low Power AM?
The current RICEBOX transceivers generate WITHOUT major distortion is
about 20W.
That is why:
1) use of SM-220 with BP-8 (ensuring clean signal)
2) Feeding my Amp S
the Amateur Service"
Sent: Sunday, November 23, 2008 12:48 PM
Subject: Re: [AMRadio] Low Power AM?
> Bob,
>
> While the plate transformer may well handle that, you are tuning off
> resonance of the PI network. That results in tuning off the Plate dip.
> I would NOT imagine th
o:
Sent: Sunday, November 23, 2008 12:42 PM
Subject: Re: [AMRadio] Low Power AM?
Never ran more then 100 to 120 watts on 20M and made lots of AM contacts
with the Apache or the 756 PRO II into a SB-200. Of course, a tri-bander
helps a lot too.
Pete, wa2cwa
To: "Discussion of AM Radio in the Amateur Service"
Sent: Sunday, November 23, 2008 8:48 PM
Subject: Re: [AMRadio] Low Power AM?
Bob,
While the plate transformer may well handle that, you are tuning off
resonance of the PI network. That results in tuning off the Plate dip. I
woul
Pete - I wholeheartedly agree, EXCEPT that MANY RTTY transmissions are
are images. Those CAN be very long - way beyond "old buzzard
transmissions". Hence my surmise that reducing drive would be the
wisest method.
Bob - N0DGN
Peter Markavage wrote:
Why would RTTY operation be any different
But what about PW power of the small DX series units?
How much AM carrier power to the current RICEBOX transceivers generate?
Bob
K5MYJ
- Original Message -
From: "Peter Markavage" <[EMAIL PROTECTED]>
To:
Sent: Sunday, November 23, 2008 12:42 PM
Subject: Re: [AMRad
the Amateur Service"
Sent: Sunday, November 23, 2008 12:14 PM
Subject: Re: [AMRadio] Low Power AM?
George,
Good question! There is NO mention of RTTY operation ANYWHERE in the
Apache Manual.
I'm also not sure how you can safely reduce the power out put following
the tuning proc
Why would RTTY operation be any different then AM operation? And with
rigs like the Viking II, DX-100, Apache, etc., you can probably key down
for many many minutes. i.e. "old buzzard transmission" which are quite
common.
Pete, wa2cwa
On Sun, 23 Nov 2008 15:14:09 -0500 rbethman <[EMAIL PROTECTED]
Never ran more then 100 to 120 watts on 20M and made lots of AM contacts
with the Apache or the 756 PRO II into a SB-200. Of course, a tri-bander
helps a lot too.
Pete, wa2cwa
On Sun, 23 Nov 2008 14:54:59 -0600 "Joe Crawford" <[EMAIL PROTECTED]>
writes:
> I personally would not even try to get o
uot;
Sent: Sunday, November 23, 2008 12:14 PM
Subject: Re: [AMRadio] Low Power AM?
> George,
>
> Good question! There is NO mention of RTTY operation ANYWHERE in the
> Apache Manual.
>
> I'm also not sure how you can safely reduce the power out put following
> the tuning
I've had several complete and quite enjoyable 20 meter AM contacts running
only my TS570, which is my only functioning AM rig at present.
Granted, most of the other stations were running full power, or at least a
Viking II power level.
But, if you can get into a qso on 20 with a reasonably good
uot;
Sent: Sunday, November 23, 2008 12:14 PM
Subject: Re: [AMRadio] Low Power AM?
> George,
>
> Good question! There is NO mention of RTTY operation ANYWHERE in the
> Apache Manual.
>
> I'm also not sure how you can safely reduce the power out put following
> the tuning
George,
Good question! There is NO mention of RTTY operation ANYWHERE in the
Apache Manual.
I'm also not sure how you can safely reduce the power out put following
the tuning procedures, WITHOUT doing some damage to some components.
It does just fine on AM and CW. Mixed results on SSB wit
speaking of the DX series, at reduced power whats the max key down time say
with rtty on these or other rigs like the DX-100 or Apaches??
George WA8SCO
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I personally would not even try to get on 14286 unless I had the legal limit
or close to it.Too many slopbuckets to deal with on 20.Low power with a lot
of antenna might work. But I understand your situation with the antenna
part. If I ever put the DX-60 back on, I am going to build an external
The DX Series do "okay". But an amplifier does wonders whether on 40M,
80M, or any other band.
We are experiencing a VERY low sunspot cycle. Conditions are horrible.
Even KW stations don't reach much.
Bob - N0DGN
Bob Macklin wrote:
Next question.
Many of us have low powered AM transmit
Next question.
Many of us have low powered AM transmitters like the small Heath DX series with
some form of screen modulation.
These transmitters previously did OK on 40M and up. 15M and 10M don't really
require high power.
But what about 20M. It seems to me that to play on 20M a GOOD linear i
DX60 Net Sunday mornings 8:00 AM to ???
typically opted by Mike N8ECR
3880 KHz
Mostly 8 land but all other call areas are invited.
de KA4JVY
Mark
--- Sara & Wayne Steiner <[EMAIL PROTECTED]> wrote:
> Al
>
> You to far away for this but just for info there is the AM "Peanut Whistle
> Net"
Good Luck finding a low power net or frequency Al. I think many of us
would like to participate in everyday lower power contacts.
73, K0ng
Alfred,
I am notorious for running my DX-60 on 40m. I get GREAT results!
On a few VERY rare instances, I run it into a pair of 3-500Zs.
I get beautiful reports!
As has been said, band conditions are ALL.
I worked on mine performing the WC3K (SK), mods. Bill was REALLY
into im
Al
You to far away for this but just for info there is the AM "Peanut Whistle
Net" on 3885 every monday morning at 8:30 amcst run by Ted. KC3OL. It is
for stations runing 10 watts carrier or less. Most of the check ins are
within a radius of 150 mi from the Kansas City area. Alot of fun and a bu
RJ Mattson wrote:
Al,
Don't tell anyone you are using low power and you will get good reports.
The difference between a DX-40 and a KW is maybe at most 3 S-units on
your rcvr.
bob...w2ami
On 40m (7.160) yesterday afternoon, Darrell/WA5VGO broke in right
after I did, it sounded like he had mo
uary 03, 2005 9:59 AM
Subject: [AMRadio] Low Power AM nets
I was wondering if there are any nets, or just parts of the 75 or 40 meter
bands where I could find anyone on low power AM, preferably
controlled-carrier, screen-grid modulation.
I recently got a DX-40 / HQ-100 AM Station on the air, for no
Al,
Low power AM can be a lot of fun, but depends almost entirely on conditions
as has already been mentioned. Was the same back in the days when AM was King
-- forget about 75 in the evening with 20W. This is why SSB rules today.
I use my military GRC-9 (5W carier on AM) in conjunction wit
I was wondering if there are any nets, or just parts of the 75 or 40 meter
bands where I could find anyone on low power AM, preferably
controlled-carrier, screen-grid modulation.
I recently got a DX-40 / HQ-100 AM Station on the air, for nostalgic
purposes, but it seems like the only AM stations I
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