[hpsdr] Active Loop Antenna

[Rick ve3mm]

Hi Mike

Thanks again for the feedback.  After further study, the versatility of the
amp in terms of using multiple types of antennas and having switching
control is amazing.

I ordered a preamp this morning.

I will let you know how it works out.

73

Rick ve3mm

On Sat, Sep 29, 2012 at 11:29 AM, Mike Stevenson <mike.g8als at ntlworld.com>wrote:

>   Hi Rick
> Yes I have one of the amps.
> I am using a loop design by PA0SIM, see
> http://www.pa0sim.nl/Alford%20loop.htm
>
> This is two crossed loops  which via the control cct gives me loop A or
> loop B or loop A+B or to be able to use the loops as vertical dipole.
> I find loop A+B gives the best results on LF and some time the vertical
> dipole is better at HF.
> I have an inverted V trap dipole for 40, 80 and 160m, 60ft high in the
> centre. The loop on 160m
>   in the evenings is normally better than the dipole and if there is QRN
> the loop gives 100% copy when R2 on dipole.
>  On other bands the dipole is mostly better but when I have local Tv /
> power supply interference the the loop wins.
>  I do find that I need the Rx attenuation set at 0db and ADC overload can
> occur unless Alex filters used.
>  I also have Clifton Labs Reject filter ( 540- 1700khz) which I use with
> cuSDR for multi RX.
>  Also works well on 136 khz.
>  I still need to try other loops and positions in the garden.
>
>  73
>  Mike G8ALS
>  *From:* Rick ve3mm <richardstasiak at gmail.com>
> *Sent:* Saturday, September 29, 2012 2:59 PM
> *To:* Mike Stevenson <mike.g8als at ntlworld.com>
> *Cc:* hpsdr at lists.openhpsdr.org
> *Subject:* Re: [hpsdr] Active Loop Antenna
>
> Hi Mike
>
> Thanks for the link.  Very interesting loop amplifier and a lot of other
> loop info.
>
> Are you using one of the amps?
>
> 73
>
> Rick ve3mm
>
> On Sat, Sep 29, 2012 at 3:50 AM, Mike Stevenson <mike.g8als at ntlworld.com>wrote:
>
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>>
>>   Have a look at http://active-antenna.eu/
>> This is a prebuilt and tested external amplifier and control.
>> Lots of information on the site.
>>
>> Mike G8ALS
>>
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>
>
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