[Boatanchors] Linear Tuning in VFOs -- SFW and SFL Variable Capacitors

[Al Parker]

I should have re-read my last -- "thru an inductor"  and a ":" after 
Collins & b4 SP-xxx's
sri,
Al

On 9/5/2022 7:51 PM, Al Parker wrote:
> Hi Bill,
>      It's cuz some have PTO (permeability tuned) oscillators (usually a 
> slug moving thru and inductor.) and some have capacitive tuned osc.    
> Drake has PTO's mostly, as does Collins, SP-xxx's, most if not all 
> Halli's use a variable capacitor.
> 73,
> 
> Al, W8UT
> www.boatanchors.org
> www.hammarlund.info
> 
> "There is nothing -- absolutely nothing -- half so much
> worth doing as simply messing about in boats"
> Ratty, to Mole
> 
> On 9/5/2022 1:11 PM, Bill Meara via Boatanchors wrote:
>> Drake 2-B!  HT-37!  SP receivers!  HQ-100s   Why do some rigs have 
>> nice, linear tuning, while others havethe frequencies bunched up at 
>> one end of the tuning range? Enquiring hams want to know!
>> https://soldersmoke.blogspot.com/2022/09/why-do-some-vfos-tune-more-linearly.html 
>>
>>
>> 73  Bill N2CQR
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