[Heathkit] HR-10 Improvement on 10/15 ?

[Bwana Bob]

Paul:

Wouldn't it be easier to just add an external 10/15 meter FET preamp or 
amplified preselector?

                 73,

                 Bob WB2VUF

On 11/25/2011 4:20 PM, Paul Baldock wrote:
> I'm trying to increase the 2nd harmonic of the oscillator. However I
> also need the fundamental to pass through (so that 80M, 40M and 20M
> still work) I think the frequency double you describe has significant
> rejection of the fundamental. However there maybe a way to over come that.
>
> - Paul
>
> At 12:35 PM 11/25/2011, Rob Doyle wrote:
>
>> An RF Transformer with a CT secondary and a pair of diodes - arranged
>> like a full wave rectifier is a standard way of building a frequency
>> doubler with 10-15dB conversion loss.
> ______________________________________________________________
> Heathkit mailing list
> Home: http://mailman.qth.net/mailman/listinfo/heathkit
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Heathkit at mailman.qth.net
>
> List Administrator: Duane Fischer, W8DBF
> ** For Assistance: dfischer at usol.com **
>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2012.0.1873 / Virus Database: 2101/4640 - Release Date: 11/26/11
>
>