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eHam Forums / Amplifiers / RE: 500-Watt VHF linear amplifiers?
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on: February 24, 2013, 05:01:15 PM
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http://www.tesystems.com/am-radio.htmTE 1454 is good for around 500 watts. The amp needs about 45 or 50 amps. i run mine with an Astron 70 A. That gives me the 70 watts of drive for the 910H and the current for the amp. And if you key the 910h at full output (100 watts)by accident, you won't blow the amp, it can take it.Occasionally it is fine, but that is getting the transistors close to saturation. You can get an amp that takes lower drive with a preamp. But the 1454 has too high a drive for a preamp. I use the Icom outboard preamp between the rig and the amp. Don't have to worry about relays or sequencers that way. Not as effective as mast mounting I know, but it does help. Plus you can turn the receive up on the 910H as well. http://www.kb2ljj.com/data/icom/ic-910.htm
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eHam Forums / Amplifiers / RE: Molly has resigned.
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on: February 20, 2013, 08:47:48 AM
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Molly was a 110% class act all the way around. The best customer oriented individual I have ever dealt with in ham radio. I think the world of her and Gordon, both as operators and professionals. I wish her the best. Those will be some huge shoes to fill.
73
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eHam Forums / Misc / RE: Damn this Modern Stuff is Good!
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on: October 31, 2012, 04:20:58 AM
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I have a Citizen Blue Angel Skyhawk that is all titanium. it does everything and sells in the 400 to 500 range. Have had it 8 years now and very happy with it. 
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9
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eHam Forums / Misc / RE: Repeaters not being used? You've been 'Punked'
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on: July 30, 2012, 06:02:20 AM
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What's up Dog? At least there in Socal there is actually a repeater on the air with a coordinated pair. Here in the South we have "paper repeaters". Pairs that are coordinated on paper only. Some over 20 years ago!
And on UHF we are a secondary user, with the military primary. I know Pavepaws has just about wiped out 440 repeater activity in Cali and New England. 1.2 is enjoying a renaissance in California. Used it in San Francisco in 2009. A linked system that went from LA to Vancouver. Imagine the thrill when WA4DOG is heard on 1.2 ghz up the entire west coast! You can do eet!
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eHam Forums / Amplifiers / RE: More Amp Questions
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on: July 17, 2012, 11:21:31 AM
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Both the AL811 and AL811h design are grounded grid. The great thing about grounded grid is if you lose a tube and do not have a replacement you just remove the tube and keep going. The dual 3-500z grounded grid amps are the same way.
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14
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eHam Forums / Amplifiers / RE: Command Technologies 2500 amp aka Dedicated RF aka AN Wireless
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on: July 10, 2012, 07:08:33 AM
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Responding to a comment by VE7RF at the beginning: Power Master meters have a SWR alarm that a keying line can run through to stop keying.
I saw several Palstar AT5K negative reviews disappear over the years. Paul refunded my purchase price on mine but it was trench warfare.
Nice to see Tom Rauch in the thread.
73 Jim
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eHam Forums / Misc / RE: Kenwood "Big Iron" Radio and Marketing
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on: June 13, 2012, 12:49:41 PM
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What I thought was cool about the new Kenwood at Dayton was the back of the rig. A large sheet of black construction paper. Just have to stick your cable or coax in there and it works! Sweet! 
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