From: "Mike Dorworth,K4XM" <[EMAIL PROTECTED]>
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 500,000 watts modulated carrier ( 2 megawatts pep)
Donald Chester wrote:
Gary K4FMX said:
The best quality audio of all can be gotten from low level modulation
and a linear amplifier.
A linear amplifier has the same kind of distortion as a class-B modulator.
That's true except with a linear amp most of the distortion products
fall outsi
Didn't this subject get beat to death back in January of this year?
Dennis D. W7QHO
Glendale, CA
Geoff wrote:
Donald Chester wrote:
The plate dissipation of the 6146's is the key. Your carrier steady on
should not exceed the dissipation rating. This is about 50 watts if I
remember right which would give you 200 watts PEP. So your power suppl;y
should be capable of about 150 watts conti
Gary Schafer wrote:
Geoff wrote:
Gary Schafer wrote:
The best quality audio of all can be gotten from low level
modulation and a linear amplifier.
However, highly non-efficient.
Efficiency doesn't matter anymore for hams. Output power is the
limiting factor not input power.
I
Geoff wrote:
Gary Schafer wrote:
The best quality audio of all can be gotten from low level modulation
and a linear amplifier.
73
Gary K4FMX
However, highly non-efficient.
---
73 = Best Regards,
-Geoff/W5OMR
Efficiency doesn't matter anymore for hams. Output power is the limiting
kenw2dtc wrote:
"But if you want broadcast quality audio you need a real plate modulated
rig"
"The best quality audio of all can be gotten from low level modulation
and a linear amplifier."
***I disagree with both statements above. If properly set up and
fixed with the proper audio
> 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
"But if you want broadcast quality audio you need a real plate modulated
rig"
"The best quality audio of all can be gotten from low level modulation and a
linear amplifier."
***I disagree with both statements above. If properly set up and fixed
with the proper audio chain, a plate mo
Gary Schafer wrote:
The best quality audio of all can be gotten from low level modulation
and a linear amplifier.
73
Gary K4FMX
However, highly non-efficient.
---
73 = Best Regards,
-Geoff/W5OMR
"
Sent: Tuesday, July 12, 2005 5:30 PM
Subject: Re: [AMRadio] power ratings
"Ken, as I read the rules, we are only allowed to run 375 watts carrier.
With 100% modulation this will give us 1500 watts pep which is the max
output allowed."
***Don, You are correct about the 15
Seattle, Wa.
"REAL RADIOS GLOW IN THE DARK"
- Original Message -
From: "kenw2dtc" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio"
Sent: Tuesday, July 12, 2005 5:30 PM
Subject: Re: [AMRadio] power ratings
> "Ken, as I read the rules, we are only
"Ken, as I read the rules, we are only allowed to run 375 watts carrier.
With 100% modulation this will give us 1500 watts pep which is the max
output allowed."
***Don, You are correct about the 1500 watts PEP. It could also be
derived by 600 watts of carrier with much less than 100% modu
In fact, since many people refuse (or just don't know how) to click on a
link, allow me to paste some of that here, that is germane to the
overall discussion of power levels, ratings, and class of operation of a
tube.
-Geoff/W5OMR
=
Amplitu
Rev. Don Sanders wrote:
Ken, as I read the rules, we are only allowed to run 375 watts carrier.
this is wrong. There is -no- maximum carrier limit. The only maximum
power limit imposed on
Ham Radio operators is 1,500W PEP output, regardless of mode.
1,500W PEP output on AM, -would- be 3
f AM Radio"
Sent: Tuesday, July 12, 2005 2:39 PM
Subject: Re: [AMRadio] power ratings
> I've been using linear amps in AM service for a few year now. With
current
> band conditions, it seems to me that a goal should be at least 300 watts
of
> carrier. Sure you can make
I've been using linear amps in AM service for a few year now. With current
band conditions, it seems to me that a goal should be at least 300 watts of
carrier. Sure you can make contacts with 25-50 watts but for consistant
contacts, the higher power is the best. When guys ask me about linear
Donald Chester wrote:
The plate dissipation of the 6146's is the key. Your carrier steady on
should not exceed the dissipation rating. This is about 50 watts if I
remember right which would give you 200 watts PEP. So your power suppl;y
should be capable of about 150 watts continuous and it wil
The plate dissipation of the 6146's is the key. Your carrier steady on
should not exceed the dissipation rating. This is about 50 watts if I
remember right which would give you 200 watts PEP. So your power suppl;y
should be capable of about 150 watts continuous and it will handle the 200
watts o
Rev. Don Sanders wrote:
Ye3s but the cost of a good modulation transformer for 300 watts or more
would be as much as a SB200. Actually for a good rig you could run a pair of
813 or a high power triode similar tube at about 800 watts and cathode
modulate at 400 watts. This is cost effective and w
do not cathode modulate well.
Healthfully yours,
DON W4BWS
- Original Message -
From: "Byron Lichtenwalner" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio"
Sent: Monday, July 11, 2005 8:54 PM
Subject: Re: [AMRadio] power ratings
> E
ully yours,
DON W4BWS
- Original Message -
From: <[EMAIL PROTECTED]>
To:
Sent: Monday, July 11, 2005 8:32 PM
Subject: [AMRadio] power ratings
> I want to thank everyone who responded to my question. The consensus of
> opinion is that the AL-811 runs 100 watts of carrier on A
[EMAIL PROTECTED] wrote:
Thanks, Gary.
Ed K6UUZ
On Mon, 11 Jul 2005 22:58:26 -0400 Gary Schafer <[EMAIL PROTECTED]>
writes:
because of the class of service.
read here (http://www.qsl.net/wa5bxo/asyam/aam3.html) for a good explanation
of everything related.
73 = Best Regards,
-Geoff
Thanks, Gary.
Ed K6UUZ
On Mon, 11 Jul 2005 22:58:26 -0400 Gary Schafer <[EMAIL PROTECTED]>
writes:
>
>
> [EMAIL PROTECTED] wrote:
> I have a junker HW-100 with a good PA
> > section. How much power could I run as a linear amp using 2X6146
> and what
> > rating power supply would I need? Than
[EMAIL PROTECTED] wrote:
I have a junker HW-100 with a good PA
section. How much power could I run as a linear amp using 2X6146 and what
rating power supply would I need? Thanks.
Ed K6UUZ
25 watts carrier with 100 watts pep output on the 6146's.
73
Gary K4FMX
Ed
Shows you what high level modulation can do, with finals running in Class C
vs. the amp running in linear mode.
Byron, W3WKR
I want to thank everyone who responded to my question. The consensus of
opinion is that the AL-811 runs 100 watts of carrier on AM with 400 watts
PEP. This with 3X811 while my DX-100 does the same thing with 2X6146.
Doesn't sound right, does it? I have a junker HW-100 with a good PA
section. How mu
Your statement sounds pretty close to me. For instance, I set my TS-430S
carrier level for about 1/3 of full carrier (Ip)capability, then adjust
the mic gain control until it sounds OK on my monitor or to a live contact.
Do not use a compressor at all. IMHO. Good luck. 73 K0NG .
Quoting [EMAIL
[EMAIL PROTECTED] wrote:
I thought I understood these things, But I have confused me little self.
I need some clear thinking here. I have a rice box rated for 100 watts
SSB or 25 Watts AM. I believe the 100 watts is PEP while the 25 watts is
RMS (continuous carrier). I want to add a linear ampli
f [EMAIL PROTECTED]
Sent: Monday, July 11, 2005 11:55 AM
To: amradio@mailman.qth.net
Subject: [AMRadio] power ratings
I thought I understood these things, But I have confused me little self.
I need some clear thinking here. I have a rice box rated for 100 watts
SSB or 25 Watts AM. I believe the 100
Sent: Monday, July 11, 2005 11:54 AM
Subject: [AMRadio] power ratings
> I thought I understood these things, But I have confused me little self.
> I need some clear thinking here. I have a rice box rated for 100 watts
> SSB or 25 Watts AM. I believe the 100 watts is PEP while the 25
Sorry about this. I must have hit a wrong key and sent the message before
I was done.
Ed K6UUZ
On Mon, 11 Jul 2005 08:42:39 -0700 [EMAIL PROTECTED] writes:
> I thought I understood these things, But I have confused me little
> self.
> I need some clear thinking here. I have a rice box rated for
I thought I understood these things, But I have confused me little self.
I need some clear thinking here. I have a rice box rated for 100 watts
SSB or 25 Watts AM. I believe the 100 watts is PEP while the 25 watts is
RMS (continuous carrier). I want to add a linear amplifier to bring the
25 watts A
I thought I understood these things, But I have confused me little self.
I need some clear thinking here. I have a rice box rated for 100 watts
SSB or 25 Watts AM. I belie
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