[R-390] Broadcast radio at 2 meg

[Mark Huss]

Rain Gutters! Never say the words "Rain Gutter" to me! I start screaming 
uncontrollably and Shoot the nearest TV with a Shotgun! Now that I have 
settled down a bit,

I first ran into them as an 18 year old kid working my second job as a 
Cable TV Repairman down in Austin Tx back in 71. Customers had really 
bad herringbone patterns on one channel. Up the Pole, Down the Pole for 
six days straight! Finally disconnected a house, and the herringbones 
went away. Turned out to be a poor connector up against the downspout of 
a rusty Rain Gutter. Replaced connector and jumpered the gutter with 
tinned braid and sheet metal screws. Told my Boss what it was. He told 
me I was full of it.

Tim Shoppa wrote:

> Murph <Murph2006 at copper.net> wrote:
>   
>> 	Why is it that I can hear broadcast stations on the 2 meg band.
>> I.E. 1.250 can be heard at 2.50 etc. Twice the freq!
>>     
>
> Harmonics, either in the transmitter or something between you and
> the transmitter or in your receiver.
>
> I have a fairly powerful transmitter (630 kc) just a mile from my
> house and a weaker but still somewhat local station that I like to
> listen to on 1260kc. The 390A does better than all the other
> radios I have.
>
> Just sticking a scope probe in the air in my basement shows several
> volts of the 630kc signal. My 40M dipole in the backyard,
> oriented on purpose against the 630kc signal, shows 10 volts or so.
> Just hooking a diode and a small speaker up to the dipole I can
> clearly hear the broadcasts!
>
> Bonding the rain gutters around my house helped eliminate constant
> QRM from harmonics but the harmonics are still there.
>
> Most modern el-cheapo shortwave receivers get nothing except for the
> 630kc broadcaster, all and everywhere all over the dial on all bands
> (including FM!)
>
> Tim.
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>   


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Some people are like a Slinky .. not really good for anything,
but you still can’t help but smile when you shove them down the stairs.
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