[NJARC] NJARC Crystal-Set Clinic

[john ruccolo]

Hi Al,

Excellent idea! Count me in as a parts source. I will
wonder aimlessly around my basement and see what I can
dig up.

Crystal sets are the reason that any end-of-the-era
5-tube AA -- no matter how cheesy or beat up -- should
not be tossed without at least salvaging the tuning
cap. (and speaker and output trans., but not for xtal
sets) ;-)

I have *always* been disappointed in the performance
of *every* crystal set I have ever built. Perhaps the
clinic will show me what I've done wrong all these
years.

Also, thanks for the info on WWBZ. In my mind's ear, I
can still hear the Rollin' Home Show: "it's
five-thirty, fender-bender bumper-jumper time...." 

Regards,

JR


--- Al Klase <al at ar88.net> wrote:

> Visit our web site - See http://www.njarc.org
> _______________________________________________
> Club Members,
> 
> Some us talked about this concept in the past. Now
> it's time to judge 
> the potential level of participation, and determine
> the true nature of 
> this event. If it's me and three people who show up
> to build sets, 
> that's OK. A hundred participants would be OK as
> well, but that will 
> require organization and commitment.
> 
> So please let me know what you think, and how you're
> willing to 
> participate. You're welcome to reply either on the
> reflector or by 
> direct email. Don't be bashful..
> 
> We'd like to open the clinic to the public as a
> promotional event for 
> Infoage if we feel we can handle it.
> 
> 
>   Crystal-Set Clinic
> 
> The Crystal-Set Clinic is envisioned as a day long
> event, to be held at 
> Infoage, on a Saturday in May. The primary activity
> will be the 
> construction of crystal sets. We’ll work in the
> Telephone Exchange 
> building and take advantage of access to the E-Shop
> in the hotel 
> basement. We’ll open the museum if we have docents.
> A number of antennas 
> will be available for test and demonstrations.
> 
> *Levels of participation*:
> 
>    1. Construct a set from parts provided by NJARC
> for a fee. (Say
>       $20-30) This is for inexperienced builders,
> including children of
>       all ages. Children under 16 must be
> accompanied and assisted by an
>       adult. We’ll probably build the NJARC PGXS and
> maybe a ferrite
>       core version of the same set. Bring hand tools
> and a soldering
>       iron if you have them.
> 
>    2. Build your own set. Bring your parts and
> ideas, and take advantage
>       of the accumulated wisdom. We’ll probably have
> a “bone yard” of
>       odds and ends.
> 
>    3. “Experts” /a la/ the repair clinics. Should be
> less hands-on, and
>       provide guidance.
> 
>    4. Just visiting. See the Museum and take the
> whole thing in.
> 
> 
>   Donations
> 
> We can buy many of the components at reasonable
> prices from Mouser, 
> Digikey, etc. The sticky part is the variable
> capacitor, New ones go for 
> $11. So, if you have single section 365pf or 500pf
> units with ¼’ shafts 
> lying around, we can use them. The basic kit will
> include a ceramic 
> earplug. They’re a <$2 item from Mouser. If we get
> donations of usable 
> 2000-ohm headsets, we’ll sell them as an added
> feature, and keep the 
> money for NJARC. I’m contemplating issuing credit to
> donors against kit 
> fees.
> 
> So, here’s the wish list:
> 
>     * Variable capacitors, single-section,
> 365-500pF, ¼” shafts.
>     * Knobs
>     * Hookup wire, about #22, we need about 80’ per
> set.
>     * Headsets
>     * Binding posts
>     * Phone jacks, both ¼” and 1/8’ (3.5mm)
>     * Wood screws, approx. #6 x ¾”
>     * Alligator clips
>     * Germanium diodes
> 
> 
> I'm counting on you, the membership.  Let me know
> what you think, and how you'll help.
> 
> Regards,
> Al
> 
> -- 
> Al Klase - N3FRQ
> Flemington, NJ
> http://www.skywaves.ar88.net/
> 
> 
> _______________________________________________
> NJARC mailing list
> NJARC at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/njarc
> 


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