[AMRadio] Boat Anchor Receiver

[Alan Victor]

You can use simple LC matching to the tubes or solid state devices to
transform their Z to that of the Xtal, Ceramic, or Mechanical filter.
The transform Q's are low compared to the filter loaded Q, so they add
no selectivity.

On 12/25/11, Eddy Swynar <deswynar at xplornet.ca> wrote:
> Hi Brett,
>
> On 2011-12-25, at 12:12 PM, Brett Gazdzinski wrote:
>
>> I think you can also do L-C coupling if you do not need the IF
>> transformers to do the bandwidth.
>
> Good point...!
>
> The Heathkit SB-300 & 301 receivers are designed just like that: a simple
> L/C parlallel combination between stages---selectivity is achieved by virtue
> of a single IF (crystal) filter...
>
> Works like a charm, too!
>
> There ARE alternatives...
>
> ~73~ de Eddy VE3CUI - VE3XZ
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