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Look at what Griffey thinks his amp will do...
On 29 Sep 2006 16:24:06 -0700, "Telstar Electronics"
wrote in .com: wrote: This in reality means that a 100% single tone modulated AM signal can reach PEP values of around 165 watts. So that his amp should be rated around 40 watts carrier on AM and around 160 watts PEP on sideband. In properly-adjusted AM, average power at 100% modulation = 1.5 X resting carrier power, and PEP = 4 X resting carrier power This was taken from http://www.ab4oj.com/peptest.html which also agrees with http://www.rf-amplifiers.com/index.php?topic=peak_power Nice try... Oh for crying out loud..... you can't even read a simple graph? Here's the transistor's power curve for everyone to see: http://www.icehouse.net/wirenut/2879curv.jpg Let's say you start with a 4 watt carrier (multiply all the numbers in the graph by 2 since you are using two transistors). The transistors will amplify that carrier to 120 watts. Now modulate the carrier 100% so your input power is 16 watts PEP. If the response was linear then the output power would be 4 * 120 watts, or 480 watts. Alas, the graph says different. VERY different. Your output power is only about 250 watts, or about HALF of your fabricated PEP figures. Crank up the supply voltage and you MIGHT reach 400, but then you have some real power dissipation problems that I pointed out in the other post and you are ignoring, just like every other post where I have proven you both wrong and ignorant.... "LOL"!!! |
Look at what Griffey thinks his amp will do...
"an old friend" wrote in message ups.com... U-Know-Who wrote: "U-Know-Who" wrote in message tomm way are you enaged in more of the crossposting you claim to hate This applies to the topic. You enjoying being humiliated does not. |
Look at what Griffey thinks his amp will do...
Telstar Electronics wrote: Jay in the Mojave wrote: What is the harmonic content with your amp? Do you have a filter in the output circuit? Jay, the harmonic content is specified in the brochure at http://www.telstar-electronics.com/SkyWave%202879AB.pdf But Frank probably doesn't believe that either... LOL P.S. No output filtering at this time. If it doesn't splatter all over the spectrum then in see-bee land it ain't a big radio. |
Look at what Griffey thinks his amp will do...
Premium Quality PC Board, Components and Chassis
13.8VDC 10 Meter Amateur Radio Band Coverage All Mode (CW, AM, FM, SSB) Toshiba 2SC2879 Push-Pull Configuration with Beta/Gain Matched Transistors Regulated Class-AB Biasing High Output Power High Efficiency Heat Sink Polarized Detachable Power Cord Fuse Protected Extremely Low Stand-By Power Remote Operation Ready Carrier Operated Relay (COR) or Multiplexed Keying† SSB Delay to Eliminate Relay Chatter High Reliability Design Low Harmonic Content 90 Day Limited Warranty † Contact Telstar Electronics for details on using this feature www.telstar-electronics.com |
Look at what Griffey thinks his amp will do...
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Look at what Griffey thinks his amp will do...
wrote in message ... On Sat, 30 Sep 2006 02:22:02 GMT, "U-Know-Who" wrote: "an old friend" wrote in message roups.com... U-Know-Who wrote: "U-Know-Who" wrote in message tomm way are you enaged in more of the crossposting you claim to hate This applies to the topic. no topic your crossposting it to RRAP does not apply to the topic Yes it does. You are too stupid to understand. Don't try. |
Look at what Griffey thinks his amp will do...
SkyWave 2879AB RF Mobile Linear Amplifier
Premium Quality PC Board, Components and Chassis 13.8VDC 10 Meter Amateur Radio Band Coverage All Mode (CW, AM, FM, SSB) Toshiba 2SC2879 Push-Pull Configuration with Beta/Gain Matched Transistors Regulated Class-AB Biasing High Output Power High Efficiency Heat Sink Polarized Detachable Power Cord Fuse Protected Extremely Low Stand-By Power Remote Operation Ready Carrier Operated Relay (COR) or Multiplexed Keying† SSB Delay to Eliminate Relay Chatter High Reliability Design Low Harmonic Content 90 Day Limited Warranty † Contact Telstar Electronics for details on using this feature www.telstar-electronics.com |
Look at what Griffey thinks his amp will do...
"Telstar Electronics" wrote in message oups.com... SkyWave 2879AB RF Mobile Linear Amplifier Premium Quality PC Board, Components and Chassis 13.8VDC 10 Meter Amateur Radio Band Coverage All Mode (CW, AM, FM, SSB) Toshiba 2SC2879 Push-Pull Configuration with Beta/Gain Matched Transistors Regulated Class-AB Biasing High Output Power High Efficiency Heat Sink Polarized Detachable Power Cord Fuse Protected Extremely Low Stand-By Power Remote Operation Ready Carrier Operated Relay (COR) or Multiplexed Keying? SSB Delay to Eliminate Relay Chatter High Reliability Design Low Harmonic Content 90 Day Limited Warranty ? Contact Telstar Electronics for details on using this feature And it's pretty, too! |
Look at what Griffey thinks his amp will do...
On 1 Oct 2006 06:06:27 -0700, "Telstar Electronics"
wrote: SkyWave 2879AB RF Mobile Linear Amplifier Stability issues passed down to the amp from its builder Premium Quality PC Board, Components and Chassis 13.8VDC 10 Meter Amateur Radio Band Coverage All Mode (CW, AM, FM, SSB) Toshiba 2SC2879 Push-Pull Configuration with Beta/Gain Matched Transistors Regulated Class-AB Biasing High Output Power High Efficiency Heat Sink Polarized Detachable Power Cord Fuse Protected Extremely Low Stand-By Power Remote Operation Ready Carrier Operated Relay (COR) or Multiplexed Keying† SSB Delay to Eliminate Relay Chatter High Reliability Design Low Harmonic Content 90 Day Limited Warranty † Contact Telstar Electronics for details on using this feature www.telstar-electronics.com |
Look at what Griffey thinks his amp will do...
SkyWave 2879AB RF Mobile Linear Amplifier
Premium Quality PC Board, Components and Chassis 13.8VDC 10 Meter Amateur Radio Band Coverage All Mode (CW, AM, FM, SSB) Toshiba 2SC2879 Push-Pull Configuration with Beta/Gain Matched Transistors Regulated Class-AB Biasing High Output Power High Efficiency Heat Sink Polarized Detachable Power Cord Fuse Protected Extremely Low Stand-By Power Remote Operation Ready Carrier Operated Relay (COR) or Multiplexed Keying† SSB Delay to Eliminate Relay Chatter High Reliability Design Low Harmonic Content 90 Day Limited Warranty † Contact Telstar Electronics for details on using this feature www.telstar-electronics.com |
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