[Amps] Alpha 87 (not 87A)

John Simmons jasimmons at pinewooddata.com
Tue Nov 7 18:14:46 EST 2017


The LP500 from Telepost (www.telepostinc.com) is such a device.

-John NI0k
> MU 4CX250B <mailto:4cx250b at miamioh.edu>
> Tuesday, November 07, 2017 2:35 PM
> I’d hazard a guess that most of the SSB splatter one hears comes from
> flat-topping (over-driving or under-loading) a linear amplifier. Someone
> should market a modern, improved version of the old Heathkit monitor 
> scope!
> I’m not sure it’s worth worrying about the relative IMD performance of
> different transmitting tubes.
> 73,
> Jim w8zr
>
> Sent from my iPhone
>
> On Nov 7, 2017, at 1:16 PM, Larry via Amps <amps at contesting.com> wrote:
>
> jim,
>
>
> i just finished the CQ WW SSB and except for a very few stations the
> quality of signals was good. i am using an Icom IC-7800.
>
>
> i believe that if each of us take the time to contact the offending 
> station
> and explain, in a polite manner that they were "spattering". try to help
> them correct the problem. the bands would clean up rapidly. every time 
> that
> i do it the problem is solved and the offending station is grateful. 
> no one
> wants to be rude to others. it's a friendly hobby after all.
>
>
> complaining does no good.
>
>
> 73,
> larry
> n7dd
>
>
>
> -----Original Message-----
> From: Jim Brown <jim at audiosystemsgroup.com>
> To: amps <amps at contesting.com>
> Sent: Tue, Nov 7, 2017 7:30 pm
> Subject: Re: [Amps] Alpha 87 (not 87A)
>
> On 11/7/2017 10:03 AM, Steve Wright wrote:> It's an even more serious
> mistake to overtly self-police when there > are no issues to fix.I don't
> understand what you mean by "self-police."> FURNISH THE COMPLAINT.Every
> time I tune my RX to the SSB part of any active band, I hear splatter 
> where
> the suppressed sideband should be, and beyond the cutoff of the TX 
> sideband
> filter on the active sideband. And I see the distortion on a good spectrum
> display that I'm certain is not being generated in the receiver. It is all
> too common for a SSB station to be occupying 10 kHz of a band (and I'm not
> talking about stations TRYING to transmit "hi-fi.)" And I typically 
> observe
> this on many signals, not just a few. It is not unusual for this splatter
> to be as strong as only 10-15 dB below the intentional signal. Casual
> ragchewers seem to be the worst offenders, although some contesting lids
> are in that club.Why does this matter? Because many of us want to work the
> weaker stations on either sid
> e of that splattering rig. And because FCC Rules require that our
> transmitted signal observe the minimum bandwidth required for the means of
> transmission. And because using more than that bandwidth is selfish is
> piggish. It's the equivalent of those obnoxious teenage (and older) 
> drivers
> with super loud audio systems driving down the road with their windows
> open, cranked up so loud that you feel the vibration of the bass.In 
> school,
> in WV, I learned that with rights come responsibilities. Our licenses 
> allow
> us to run high power to big antennas, but they also require that our
> signals be clean.73, Jim
> K9YC_______________________________________________Amps mailing
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