[Milsurplus] BC-474

[Al Klase]

Mike and the Group,

Now you did it!  I just dragged out the RCA MI-8751/SCR-288.  That's the 
original version of the BC-474.  I managed to break the group on 75 AM, 
and got a reasonable report from K1AAM in Maine.  Not bad for an almost 
70-year-old QRP radio working into a doublet draped front to back over 
the townhouse.

Regards,
Al

On 3/29/2010 7:29 PM, Mike Feher wrote:
> Dave -
>
> No, I did not, but, I am well aware of what you are talking about. I have
> never used mine on CW, just AM. I built a power supply that fits, tightly,
> into the battery compartment, so, all I have to do is plug it in. I had to
> use DC on the filaments and totally isolate it from the rest of the
> circuitry as I recall due to an excessive hum otherwise. I really like those
> crude early sets, and the 474 sure fits into that category. 73 - Mike
>
> Mike B. Feher, N4FS
> 89 Arnold Blvd.
> Howell, NJ, 07731
> 732-886-5960
>
>
>
>
> -----Original Message-----
> From: milsurplus-bounces at mailman.qth.net
> [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of David Stinson
> Sent: Monday, March 29, 2010 7:20 PM
> To: 'milsurplus'
> Subject: [Milsurplus] BC-474 and TBY
>
>
> ----- Original Message -----
> From: "Mike Feher"<n4fs at eozinc.com>
>
>    
>> More recently, using my BC-474 I worked up and down the east
>> coast without problems and it was fun....
>>      
> I had a blast with mine awhile back as well,
> even making several contacts on AM.
> Did you disconnect that B+ filter electrolytic
> that is before the TR switch contact, C-13?  Before I found that,
> the discharge arc as I switched to TX was eating-up
> the switch contact.  It is an obvious design flaw,
> and I can't understand how the rig could have functioned
> for very long without destroying the switch contact.
> I just disconnected the cap and no more problem.
>
>    
>> ... Hey, you bought that TBY from me and you been
>> boasting about your efforts since....
>>      
> I have an original TBY (no number) I powered-up
> a few years back and actually (yes; I confess)
> got someone to talk to me on Chicken Band for a minute.
> That was cool.
>
> You can see the later-war shortage of strategic metals
> in the TBY series.  Put  a soldering iron to a connection
> in a TBY-1 or -2 and the solder melts quickly and flows
> smoothly.  Try it with a TBY-8, and you'll think you're
> going to need a blow-torch.  They cut way back on the lead.
>
> 73 Dave S.
>
>
>
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-- 
Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/