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#11
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That's BS! If what you have stated is true, no one would run more than 10
watts. Believe me, 20 dB is _very_ noticeable. "Scott Dorsey" wrote in message ... In article , vt245 wrote: Right, it's only 20 dB. That is far less than the day to day propagation variations. Only 3 1/3 S-units. Not much at all. |
#12
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John N9JG wrote:
That's BS! If what you have stated is true, no one would run more than 10 watts. Believe me, 20 dB is _very_ noticeable. Sure, it's very noticeable. But, as someone running half a watt CW these days, I can say that it's not everything. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#13
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Scott Dorsey wrote:
There are plenty of decent used linear amps out there if you want to go that route, but if you think about it in dB, 1000W isn't _that_ much more than 10W. What??? 10W - 1000W is 20db. Distance doubles every 6db - do the math... Only a few S-units at the receiver. Talking about "S-units" in such a discussion is meaningless *unless* one has checked the calibration of one's meter - AND states the calibration characteristics to qualify the readings. The reason is there is no "universal definition or standard" of "S units". There have been proposals - but so far no standards. The proposal that seemed to have had the best chance was made in the 40's - and that was where S9 = 50uv (at the antenna connector) - and each "S unit" down being -6db. As noted - that never became a standard - in fact today most modern receivers seem to be around 5db per S unit The reason seems to be that using -5db/S results in S0 below 50uv being right around the noise floor of most rigs - i.e. .2uv (S+N/N=10db). But unless one states what specific characteristics of "S units" they are using - talking about "S units" is meaningless (i.e. a "few" "S units" could be 3db - they could be 18db - or more -- who knows if it's not stated). sheeesh... -- randy guttery A Tender Tale - a page dedicated to those Ships and Crews so vital to the United States Silent Service: http://tendertale.com |
#14
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Agreed , QRP can be very cool.
I am finding similar results with PSK and helshreiber on less than 50 watts with regular European contacts. And yes, you can make bunches of CW contacts with a single 6L6. "Scott Dorsey" wrote in message ... John N9JG wrote: That's BS! If what you have stated is true, no one would run more than 10 watts. Believe me, 20 dB is _very_ noticeable. Sure, it's very noticeable. But, as someone running half a watt CW these days, I can say that it's not everything. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#15
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What??? 10W - 1000W is 20db. Distance doubles every 6db - do the math...
6db is for voltage and current NOT for power .... do the research "Randy or Sherry Guttery" wrote in message . .. Scott Dorsey wrote: There are plenty of decent used linear amps out there if you want to go that route, but if you think about it in dB, 1000W isn't _that_ much more than 10W. What??? 10W - 1000W is 20db. Distance doubles every 6db - do the math... Only a few S-units at the receiver. Talking about "S-units" in such a discussion is meaningless *unless* one has checked the calibration of one's meter - AND states the calibration characteristics to qualify the readings. The reason is there is no "universal definition or standard" of "S units". There have been proposals - but so far no standards. The proposal that seemed to have had the best chance was made in the 40's - and that was where S9 = 50uv (at the antenna connector) - and each "S unit" down being -6db. As noted - that never became a standard - in fact today most modern receivers seem to be around 5db per S unit The reason seems to be that using -5db/S results in S0 below 50uv being right around the noise floor of most rigs - i.e. .2uv (S+N/N=10db). But unless one states what specific characteristics of "S units" they are using - talking about "S units" is meaningless (i.e. a "few" "S units" could be 3db - they could be 18db - or more -- who knows if it's not stated). sheeesh... -- randy guttery A Tender Tale - a page dedicated to those Ships and Crews so vital to the United States Silent Service: http://tendertale.com |
#16
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![]() Johnson desk kilowatt, lots of them get driven by Rangers. Ron To buy an EFJ Desk Kilowatt you need to be prepared to mortgage your house, wife, and kids or win the lottery... |
#17
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vt245 wrote:
What??? 10W - 1000W is 20db. Distance doubles every 6db - do the math... 6db is for voltage and current NOT for power .... do the research Ok so I mixed db and dbi, point for you. Now tell me that 1000W is "almost" indistinguishable at the recieving end from 10W - and S-units are a valid comparison standard... Sheeesh. -- randy guttery A Tender Tale - a page dedicated to those Ships and Crews so vital to the United States Silent Service: http://tendertale.com |
#18
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Randy or Sherry Guttery wrote:
Ok so I mixed db and dbi, point for you. Now tell me that 1000W is "almost" indistinguishable at the recieving end from 10W - and S-units are a valid comparison standard... Well this time my spell checker got me - try again - mixed dB and dBu, (field strength). that's what i get for shooting fast and from the hip... -- randy guttery A Tender Tale - a page dedicated to those Ships and Crews so vital to the United States Silent Service: http://tendertale.com |
#19
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Randy or Sherry Guttery wrote:
vt245 wrote: What??? 10W - 1000W is 20db. Distance doubles every 6db - do the math... 6db is for voltage and current NOT for power .... do the research Ok so I mixed db and dbi, point for you. Now tell me that 1000W is "almost" indistinguishable at the recieving end from 10W - and S-units are a valid comparison standard... I won't tell you that they are almost indistinguishable. But I will say that S-units should be a valid comparison standard, at least with military gear that _is_ calibrated in 6 dB increments. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#20
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If you are only satisfied with the VERY best, then follow this link. This
particular rig only runs 500 watts on 160, but that's because that was the legal 160 meter limit when the transmitter was sold. I am sure it would be easy to remove the artificial power constraint for 160 meters. Go for it! http://www.wa3key.com/kw1.html "Lazy Senior" wrote in message news ![]() I recently acquired a Viking Ranger in nice working condx. I am interested in using this on AM on 160, 80, and 40 mtrs. The Ranger runs around 40 watts Am carrier output. I would like to get an amplifier to use with this xmtr, maybe a vintage amp. What should I be looking for? I would like to run legal Am Limit on these 3 bands. Should I forget about Vintage Amps and get a modern Amp? Suggestions please. Any pitfalls to using a modern Amp? Thanx Lazy Senior |
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