[Boatanchors] BC-348H Recap

[Moe Fretz]

Well put Rodger


$-------&
Moe Fretz
Collection and Preservation
Canadian Tube Radios, Communication Equipment, Vintage Ham gear and
Military Radios.
Hallicrafters, RCA, National, Hammarlund,TMC, RME and Racal.

www.radiopreservationguy.com

Don't part them out ---- Restore them.

Cambridge
Ontario Canada


On Mon, Oct 21, 2013 at 8:51 AM, WQ9E at btsnetworks.net
<WQ9E at btsnetworks.net>wrote:

> I side with Dave on this issue. Modifications are like pharmaceuticals,
> they have an intended effect which is usually positive but generally also
> have multiple side effects, most of which are undesirable, and these side
> effect issues and the interactions thereof are often unforeseen (and
> unforeseeable unless you are an excellent design engineer).  Far too many
> ham modifications are either short-sighted in design and implementation or
> even worse are used to mask failure or degradation of a component instead
> of addressing the root cause of the shortcoming.
>
> For me the main enjoyment of using vintage gear is experiencing it as it
> performed originally.  I will make safety modifications where necessary but
> all of these are reversible back to original without added holes.  I don't
> like gear without fuses (many 1930s era receivers) or gear with 1,600 volts
> exposed on uncovered binding posts (i.e. my Hallicrafters HT-19). If the
> selectivity is too poor an external Autek QF-1A or similar filter works
> wonders and if the sensitivity is too low then a better antenna or addition
> of a preselector/preamp will address the issue.
>
> Restoring modified and/or abused gear back to near original condition can
> be challenging but the result should be a source of pride to the owner.
> Significantly modified gear usually ends up in the "neither fish nor fowl"
> category and the resources (both time and funds) would have been better
> spent starting with a clean sheet homebrew design. My other hobby is
> woodworking and if I used the ham radio approach when building a walnut
> corner china cabinet I would have tried to modify a dining room table into
> dish storage instead of starting with new walnut lumber :)
>
> Rodger WQ9E
>
> -------- Original Message --------
> > From: "David Stinson" <arc5 at ix.netcom.com>
> > Sent: Monday, October 21, 2013 6:01 AM
> > To: boatanchors at mailman.qth.net
> > Subject: Re: [Boatanchors] BC-348H Recap
> >
> > Subject: [Boatanchors] BC-348H Recap
> >
> >
> > I have recapped and resurrected several BC-348s, at least
> > one of every usual design.  While the Micamolds are a problem,
> > I have had to replace *two* of the oil-filled caps, which were leaking,
> > and never the large metal one.  Several of those sets are used daily and,
> > to the best of my knowledge, none of the remaining oil caps have died.
> >
> > As for the circuit changes you propose-
> > I respectfully recommend against it.   The original design engineers
> > were talented, competent men.  When properly restored to
> > original design and carefully aligned, they perform well.
> > In the long run, the circuit changes proposed will only add
> > one more "hacked" BC-348 to the hamfest junk pile.
> >
> > 73 DE Dave AB5S
> >
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