Re: [AMRadio] power ratings
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? Thanks. > > > > Ed K6UUZ > > > 25 watts carrier with 100 watts pep output on the 6146's. > > 73 > Gary K4FMX > > > __ > 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] power ratings
[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
Re: [AMRadio] power ratings
Ed Shows you what high level modulation can do, with finals running in Class C vs. the amp running in linear mode. Byron, W3WKR
[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 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 much power could I run as a linear amp using 2X6146 and what rating power supply would I need? Thanks. Ed K6UUZ
Re: [AMRadio] Power ratings
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 PROTECTED]: > 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 > __ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:AMRadio@mailman.qth.net > This message was sent using IMP, the Internet Messaging Program.
Re: [AMRadio] power ratings
[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 amplifier to bring the 25 watts AM up considerably. I see the Ameritron AL-811 is rated for 600 watts SSB and 400 watts AM. Is this 400 watts PEP or RMS. If PEP that means the RMS rating is 100 watts, the same as my DX-100. Also it requires 75 watts of drive. Is this PEP or RMS. If RMS my rice box at 25 watts won't drive it. I am thinking the 75 watts of drive is PEP and my rice box with 100 watts PEP in AM will drive it. Can someone clarify this for me? Thanks. The general 'rule of thumb', Ed, is to load your linear up for max smoke, in CW. then, switch yoru ricebox over to AM, and adjust the carrier level up to 25% of the total output power of the amp. Then, increase your mic gain up until you just start to see a deflection on the grid meter of the amp. This should put you pretty darn close to the linear portion of your AM signal. Of course, a Scope always helps when adjusting audio levels. As for the power out of the amps and rice boxes... 25% of the max output should be sufficient for 'clean' sounding AM, in -most- rigs. 73 = Best Regards, -Geoff/W5OMR
RE: [AMRadio] power ratings
SSB amps make poor AM amps, partly because they are built for the very small average power output/duty cycle. I would say AL-811 is good for about 100 watts carrier output tube wise, but the power supply may not be up for it. Many amps of that type use voltage doubler or tripler circuits, and stiff regulation is not their strong point. A pair of 3-500z tubes will do 400 watts of carrier I think, if the power supply can handle it, and with fans, and with a 220 volt feed Seems quite silly when you can get 700 watts of carrier out of a pair of 813's. Or 300 watts carrier out of a pair of plate modulated 811a's. If you want to get any clean power out, you likely have to run the rice box at 15 or 20 watts so you don't get into the ALC stuff, and would need to look for an amp that takes less power to drive. >From 25 to 100 watts is a big jump, even if 100 watts does not sound like a lot. I think 100 watts is qrp for AM, unless you work 40 meters in the day, with a good antenna. On the other hand, the rice boxes make great exciters for class C rf decks! Brett N2DTS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [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 watts is PEP while the 25 watts is RMS (continuous carrier). I want to add a linear amplifier to bring the 25 watts AM up considerably. I see the Ameritron AL-811 is rated for 600 watts SSB and 400 watts AM. Is this 400 watts PEP or RMS. If PEP that means the RMS rating is 100 watts, the same as my DX-100. Also it requires 75 watts of drive. Is this PEP or RMS. If RMS my rice box at 25 watts won't drive it. I am thinking the 75 watts of drive is PEP and my rice box with 100 watts PEP in AM will drive it. Can someone clarify this for me? Thanks. Ed K6UUZ __ 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] power ratings
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 x 811a amp here. There was a great article in QST explaining this and I have popsted ref in the past. The amp will easily do 600 pep but YOUR supply will not, Mine will. That is why they say 400 watts PEP.. Hope this helps.. mike - Original Message - From: <[EMAIL PROTECTED]> To: 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 watts is > RMS (continuous carrier). I want to add a linear amplifier to bring the > 25 watts AM up considerably. I see the Ameritron AL-811 is rated for 600 > watts SSB and 400 watts AM. Is this 400 watts PEP or RMS. If PEP that > means the RMS rating is 100 watts, the same as my DX-100. Also it > requires 75 watts of drive. Is this PEP or RMS. If RMS my rice box at 25 > watts won't drive it. I am thinking the 75 watts of drive is PEP and my > rice box with 100 watts PEP in AM will drive it. Can someone clarify this > for me? Thanks. > > Ed K6UUZ > __ > 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] Power ratings
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 100 > watts > SSB or 25 Watts AM. I belie > __ > 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] 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 watts is RMS (continuous carrier). I want to add a linear amplifier to bring the 25 watts AM up considerably. I see the Ameritron AL-811 is rated for 600 watts SSB and 400 watts AM. Is this 400 watts PEP or RMS. If PEP that means the RMS rating is 100 watts, the same as my DX-100. Also it requires 75 watts of drive. Is this PEP or RMS. If RMS my rice box at 25 watts won't drive it. I am thinking the 75 watts of drive is PEP and my rice box with 100 watts PEP in AM will drive it. Can someone clarify this for me? Thanks. Ed K6UUZ
[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 belie
