Given the recent discussion about the need for low-noise preamps for the
Waller Flag, it would be interesting to learn what the NF on 160 for this
device might be.
It's rated for "DC" up into the GHz range. However, as N4IS pointed out, a
good NF at VHF does not mean a good or better NF below 2 MHz.
73, Mike
www.w0btu.com
On Fri, Aug 28, 2015 at 5:26 PM, Richard (Rick) Karlquist <
richard@karlquist.com> wrote:
> It might be a lot easier to simply buy this amplifier IC:
>
> http://www.hittite.com/products/view.html/view/HMC580ST89
>
> The specs are close to the W7IUV preamp.
> I mounted one of these ICs on a breadboard and tried it out with a short
> vertical whip and it
> seemed to work fine.
>
> Rick N6RK
>
>
>
> On 8/28/2015 2:53 PM, Martin Kratoska wrote:
>
>> The latest version 6
>>
>> http://www.okdxf.eu/files/preamp_r60.pdf
>>
>> 73,
>> Martin, OK1RR
>>
>
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