[Elecraft] Driveway Distortion Demolition Derby

[Bruce Bowman, NM5B]

Unrelated to the K3 performance complaint, what happened to the 50 watt 
PEP limit for US stations on 60-m? Has that been changed?

Bruce, NM5B

----- Original Message ----- 
From: "Robert Carroll" <w2wg at comcast.net>
To: <elecraft at mailman.qth.net>
Sent: Tuesday, May 05, 2009 8:13 AM
Subject: Re: [Elecraft] Driveway Distortion Demolition Derby


> Guy-
>
> That's a nice response to  a really ridiculous complaint.
> 73
> Bob W2WG
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Guy Olinger, 
> K2AV
> Sent: Tuesday, May 05, 2009 9:50 AM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] Driveway Distortion Demolition Derby
>
> Two 100w mobiles in the same driveway and expecting linear response 
> from the
>
> RX in one while transmitting on the other?  Talking about volts across 
> the
> antenna jack (or any of the connecting cables) here.  Who's the EE? 
> S9 is
> 50 uv.  1 volt = 20 log 1/ .000050  = 86 over S9.  Maybe ten volts on 
> the
> antenna.  That's 106 over S9.
>
> Hearing some kind of distortion on a 100 over S9 signal is some kind 
> of
> desperately grave trouble in a K3 trouble worth attention?  Really 
> want
> Wayne spend precious development time figuring that out?  Personally I 
> vote
> for 10 Hz granularity on CW using width and shift.
>
> Thought the customary form of communication from thirty feet was audio 
> off
> the lips.  Need 100 watts on 60m to communicate thirty feet?  Audio
> distortion could be the driveway version of RF in the shack. 10 volts
> externally imposed RF wandering around on your cable of choice is a 
> formula
> for wierdness no matter where the station.
>
> Someone is really lucky they didn't smoke something.  And if the K3 
> did get
> toasted in this driveway radio demolition derby, that would be the 
> K3's
> fault too, right?  Double fault, K3 was distorting the audio while the 
> front
>
> end was being roasted.  Bad K3.  Bad K3.
>
> Some of the radios bandied about earlier were specifically designed in 
> World
>
> War II to survive conditions related to an enemy was trying to kill 
> the
> operator.  I'd call that a design standard specifically requested and 
> paid
> for.  Since one tank could be next to another, I'd call that 
> reasonable.
>
> Such radios ARE still made and paid for.  You really want to go pay 
> for
> military grade radios, you can get them, at a price far exceeding the 
> MSRP
> for a K3.  Use a kilowatt in your driveway. No problem.  Use 10 kw in 
> your
> driveway like the CB powerfests. No problem.
>
> Personally I'd like to keep the features I pay for confined to 
> peacetime,
> and it does not occur to me as good practice to be transmitting high 
> power
> in the same driveway with another radio on-band with a tuned antenna.
> Others may see it differently but I consider the situation in the 
> first
> paragraph as being careless with a friend's property.
>
> We have contest stations with such situations possible, but we use 
> filters,
> stubs, remote receiving antennas, etc,  to make it possible to operate 
> with
> nowhere near a volt on-band.  Sometimes use radios borrowed from 
> friends,
> and guess who pays to repair a smoked front-end, and guess which 
> embarrassed
>
> soul has to explain same to friend.
>
> Whether the audio was distorted in a smoke-it episode is really a low 
> grade
> consideration.
>
> 73,  Guy.
>
>
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