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Subject: Re: LF: Re: Audio link
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Thank you Alan.

Any laser type link will be home constructed, it will be strictly PWM 
and the range will be point to point from my shack weather station pole 
to a high point on the house.

On 11/10/2016 22:09, Alan Melia wrote:
> Hi Hugh they can create horrendous RFI if you are not careful. The 
> ones used for TV distibution "may" be better......the good ones are 
> notched at the amateur bands and being for digital levels dont use AGC.
>
> Alan
> G3NYK (who moonlights on the EMC committee)
>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Tuesday, October 11, 2016 8:38 PM
> Subject: LF: Audio link
>
>
>> To avoid having  laptop running in the shack, which occasionally 
>> produces some QRM,  I can send received audio from the shack to a 
>> desktop computer in the house on a twisted telephone pair. This works 
>> but any wire connection between shack and this desktop introduces 
>> some spurious signals on 136khz even if I use an audio isolating 
>> transformer.
>>
>> 73, Hugh, M0DSZ
>>
>
>
>