Steve, are L9 and L10 equal to 820nH (0.82uH), and not 8.2mH as indicated?
I've been compiling a Corsair II manual errata so just want to make sure.
thanks & 73,
Barry N1EU
On Wed, Mar 13, 2013 at 4:13 PM, Steve Hunt <steve@karinya.net> wrote:
> Jerry,
>
> It's yet another error on the schematic! I lifted L5 this morning and
> measured it: 330nH, not 3.3mH; it resonates with C16 (1000pF) close to 9MHz.
>
> L9 and L10 on that same schematic are similarly in error.
>
> 73,
> Steve G3TXQ
>
>
>
>
> On 13/03/2013 20:01, Jerry Haigwood wrote:
>
>> Hi Steve,
>> I agree with you. I don't quite understand what is going on with the
>> convoluted Bridge-Tee diplexer on the Corsair II. A properly designed
>> Bridge-Tee diplexer with a Q of 1 would have L5, L6 of 0.88 uHy with C15,
>> C16 having values of 354 pF. I could understand TenTec using a Q
>> different
>> than 1 but from looking at their values, it appears they are concerned
>> with
>> terminating frequencies below 88 KHz. Like you stated we have no way of
>> figuring out what they are passing but one would figure they want to pass
>> 9
>> MHz. If I had some extra time, maybe I could build a proper Bridge-Tee
>> diplexer and try it out. However, I am not sure how to make any
>> definitive
>> measurements since the Corsair II already has excellent dynamic range.
>> Jerry W5JH
>> "building something without experimenting is just solder practice"
>>
>>
>>
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