[AMRadio] Re: Frequency Response

2004-09-27 Thread Patrick Jankowiak
Sorry for the long winded post, but here it is.. Since the discussion is regarding distortion and frequency response, I would like to share some experience I have had with improving the fidelity of otherwise mundane audio power amplifers. Although some of the technicques presented may require

RE: [AMRadio] WTB SB-220

2004-09-27 Thread Patrick Jankowiak
I have found that a good rule of thumb for using linear amplifiers on AM without burning up the tubes is the max. carrier output from the linear should be no more than half the total CCS dissipaton of the tubes. Case in point the pair of 6146's at 20-25W carrier, etc. I run my National NCL-20

[AMRadio] SIMPSON MAINTENANCE MANUAL

2004-09-27 Thread W4AWM
Hi Don, The envelope full of 260 info and your flier arrived safely today. I sure do appreciate the time and effort that went into making copies and getting them in the mail. I have several 260s and swear by them when working with boatanchors. I recently picked up a 360 which looks the same

RE: [AMRadio] UPDATE: Free for SASE: Simpson 260 Repair Manual Copies

2004-09-27 Thread Chuck Kembring
Don I received the envelope today with the Simpson 260 info. - Thanks for sending it along. I looked it over and will place it in my "Simpson" file for future reference. You can never have too much equipment information! I did check out your "Want" list to see if I could help yo

Re: [AMRadio] WTB SB-220

2004-09-27 Thread RJ Mattson
Again, It would be an S1 signal above a s9/30db level noise - a barely perceivable difference. You would have to go from 100 to ~ 6,400 watts to get an S3 signal above that noise level. bob...w2ami www.qrz.com/callsign/w2ami - Original Message - From: "George Pritchard" <[EMAIL PROTEC

Re: [AMRadio] Frequency Response

2004-09-27 Thread Gary Blau
Exactly. However, if you intend to employ significant audio clipping as a means of peak control and loudness enhancement, the low freq response should ideally extend well below that to better accommodate the flat topped waveforms without substantial elevation of their peak level caused by the tilt

RE: [AMRadio] WTB SB-220

2004-09-27 Thread George Pritchard
When the interference is also at 30 over S9(even if it's static crashes) a 36 dB over signal using the 400 watts helps. First put up the best ant... Then crank-it with juice!!! George AB2KC 1KW 4X1 lives -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of RJ M

Re: [AMRadio] WTB SB-220

2004-09-27 Thread RJ Mattson
No matter what the spin, 100 to 400 watts is only 1 s-unit and barely perceptible at the receiver. A 30db/s9 signal is from a good antenna not from 100 or 400 watts. bob...w2ami www.qrz.com/callsign/w2ami - Original Message - From: "Jim Candela" <[EMAIL PROTECTED]> To: Sent: Sunday,

Re: [AMRadio] WTB SB-220

2004-09-27 Thread peter A Markavage
It probably was Bill's voice and audio that drove the QRM away. Pete, wa2cwa On Sun, 26 Sep 2004 19:47:10 -0700 (PDT) Jim Candela <[EMAIL PROTECTED]> writes: > Ever hear Bill running 100 watts? When Bill and Less > K6HQI (sk) were regulars on 14286 they had to run > heavy iron to hold the frequen