[Hallicrafters] Solid state rectifier and matching 6V6s

[jeremy-ca]

There is no need to get your knickers in a knot.

As I said already, it is simply another option. What is better for you may 
not be for someone else. Thats why they made strawberry ice cream.

Yes the zip cord output varies with the load but the load from a radio is 
constant. It is simple enough to calculate the load for 1, 2, 3 or more 
radios and use a compromise length for a nominal 117 for one radio and 
dropping down a bit as others are added. Wire resistance and current charts 
have been in the ARRL Handbook for 75 or so years.

There have been several ideas tossed out tonight, all with merit. I have no 
intention of saying any is better than another.

Carl
KM1H


----- Original Message ----- 
From: "Edward B Richards" <zuu6k at juno.com>
To: <km1h at jeremy.mv.com>
Cc: <lrlayton at cox.net>; <iluznst at yahoo.com>; <hallicrafters at mailman.qth.net>
Sent: Saturday, September 08, 2007 7:04 PM
Subject: Re: [Hallicrafters] Solid state rectifier and matching 6V6s


> No, you do not need one for every radio. one transformer will handle as
> many radios as you want. The voltage drop with the zip cord will vary
> with the load. The voltage reducer will not. Just because you have done
> it for years does not automatically mean there is not a better way.
>
> Ed  K6UUZ
>
> On Sat, 8 Sep 2007 18:51:55 -0400 "jeremy-ca" <km1h at jeremy.mv.com>
> writes:
>> Not better, just another option. But it costs $20 per radio and that
>> adds up
>> for many of us. With the zip cord reducer you can feed that into an
>> outlet
>> strip and plug in several radios. Ive done it that way for years.
>> Just dont
>> exceed the  ratings of the zip cord if you want a few on at a time.
>> Coil it
>> in a loose bundle so there is some air circulation.
>>
>> Carl
>> KM1H
>>
>>
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message ----- 
>> From: "Edward B Richards" <zuu6k at juno.com>
>> To: <km1h at jeremy.mv.com>
>> Cc: <lrlayton at cox.net>; <iluznst at yahoo.com>;
>> <hallicrafters at mailman.qth.net>
>> Sent: Saturday, September 08, 2007 5:15 PM
>> Subject: Re: [Hallicrafters] Solid state rectifier and matching
>> 6V6s
>>
>>
>> >A better way yet is to make a simple voltage reducer for under $20.
>> See
>> > the one on BAMA's home page by K6UUZ.  Thank you.  Ed
>> >
>> > On Sat, 8 Sep 2007 15:54:34 -0400 "jeremy-ca"
>> <km1h at jeremy.mv.com>
>> > writes:
>> >> Variacs can be pricy especially when you have radios in several
>> >> rooms. A
>> >> cheaper alternative is to get a 250' coil of #18 or #20 zip cord
>> and
>> >> let
>> >> Isquared R do the work. Getting the input down around 105-108V
>> does
>> >> wonders
>> >> for heat reduction.
>> >>
>> >> Carl
>> >> KM1H
>> >>
>> >>
>> >> ----- Original Message ----- 
>> >> From: <lrlayton at cox.net>
>> >> To: "Douglas" <iluznst at yahoo.com>
>> >> Cc: <hallicrafters at mailman.qth.net>
>> >> Sent: Saturday, September 08, 2007 2:32 PM
>> >> Subject: Re: [Hallicrafters] Solid state rectifier and matching
>> >> 6V6s
>> >>
>> >>
>> >> > The Russian made 6V6s (Electro Harmonics  brand) are
>> relatively
>> >> cheap and
>> >> > work very well. I have been using a pair in my SX-42 for
>> several
>> >> years.
>> >> > They are available from Antique Electronic Supply and others.
>> >> >
>> >> > As for replacing the 5Z3, I prefer to leave things as original
>> and
>> >> to use
>> >> > a variac to lower the line voltage. The AC line at my location
>> is
>> >> around
>> >> > 123 volts and this is much higher than what these radios were
>> >> designed
>> >> > for.
>> >> >
>> >> > If a solid state replacement for the 5Z3 is used, the Radio
>> Daze
>> >> version
>> >> > looks like a a good choice because of the current in-rush
>> limiter
>> >> and
>> >> > voltage dropping resistance that it comes with.
>> >> >
>> >> > Les Layton
>> >> > Las Vegas, NV
>> >> >
>> >> >
>> >> >
>> >> > ---- Douglas <iluznst at yahoo.com> wrote:
>> >> >> Howdy!
>> >> >>
>> >> >> I've been thinking about replacing the 5Z3 rectifier
>> >> >> with a solid state one from Radio Daze for use in my
>> >> >> SX-16. Anybody have any comments? My main reason for
>> >> >> going this route is to take some load off of the
>> >> >> transformer.
>> >> >>
>> >> >> I also need to get two newer sets of 6V6s, one for the
>> >> >> SX-16 and one for the SX-62. What's the collective
>> >> >> brains best advice on this one. I've looked at AES,
>> >> >> but they seem more suited to high-end amps.
>> >> >>
>> >> >> 73,
>> >> >>
>> >> >> Douglas
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> > ______________________________________________________________
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>> >
>>
>>
>>
>
>