[Hallicrafters] Hallicrafters Digest, Vol 87, Issue 21
Boog Moore
n4ctf at hotmail.com
Tue Apr 19 13:48:10 EDT 2011
I have a set of tubes, in the box, for an S38A/B. Also an S38 Chassis, S38A(I think) chassis, 1 cabinet and bottom plate(no back). A dial faceplate and pointer and schematics for the above. Almost forgot.......an assortment of knobs, some original. I was going to restore but have decided not to. Offer's for the above, including shipping?? Or a possible trade? 73 es tnx
ARS N4CTF
SSG (ret.)(DAV) Troy D. "Boog" Moore, JR
3687 Bible Grove Road
Lexington, Tennessee 38351-6832
n4ctf at hotmail.com
731-609-4604 (cell phone)
35 deg. 40 minutes 44.55 seconds North (35.6790)
88 deg. 16 minutes 10.57 seconds West (88.2696)
grid square = EM55uq elevation = 462 feet
> From: hallicrafters-request at mailman.qth.net
> Subject: Hallicrafters Digest, Vol 87, Issue 21
> To: hallicrafters at mailman.qth.net
> Date: Tue, 19 Apr 2011 12:00:51 -0400
>
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> Today's Topics:
>
> 1. SX-43 (Wilson Lamb)
> 2. Re: SX-117 Audio has too many lows (Carl)
> 3. Re: SX-117 Audio has too many lows (kc9cdt at aol.com)
> 4. Re: SX-117 Audio has too many lows (Carl)
> 5. HT33 (Michael Mardit)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 18 Apr 2011 12:48:05 -0400
> From: "Wilson Lamb" <infomet at embarqmail.com>
> Subject: [Hallicrafters] SX-43
> To: <hallicrafters at mailman.qth.net>
> Message-ID: <A0A271B0A5D8413388CAEE105DD68C91 at wilsonspc>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Real nice SX-43 WITH speaker available in central NC.
> Can take to RARSFEST.
> Any interest?
> Wilson
> W4BOH
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 18 Apr 2011 13:41:18 -0400
> From: "Carl" <km1h at jeremy.mv.com>
> Subject: Re: [Hallicrafters] SX-117 Audio has too many lows
> To: <hallicrafters at mailman.qth.net>, <kc9cdt at aol.com>
> Message-ID: <00c601cbfdef$d4f024b0$6601a8c0 at DAVES>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> I dont remember the earlier thread but after looking at the schematic I'd
> suggest a little experimenting.
>
> Lift one end of the following and see what happens.
>
> C-93, the reactance is very high at audio but these micas can be leaky
>
> C-99, 100, 101. Should make any difference but.....
>
> C-97, its to prevent HV spikes but see what it does with a relatively low
> audio level
>
> And C-98, reduce to between 4.7 and 10uF, that will filter some of the lows.
>
> C-94 and 95 are already very low values which reduces the lows, see what
> happens when you go to half that.
>
> You cant do anything about the IF bandwidth but you can possibly tilt the
> audio bandpass a little in your favor.
>
> Carl
> KM1H
>
>
> ----- Original Message -----
> From: <kc9cdt at aol.com>
> To: <hallicrafters at mailman.qth.net>
> Sent: Sunday, April 17, 2011 10:01 PM
> Subject: [Hallicrafters] SX-117 Audio has too many lows
>
>
> > Hi everyone,
> > I have a beautiful SX-117 that hears super!
> > The audio however seems to have way too much lows in it and no highs.
> > Kind of muddy sounding.
> > I tried two different HAllicrafters speakers that are in the
> > PS150-120....same sounds.
> > It is much better with the Halli R-47, small desk speaker
> >
> > I plan to look at this tommorrow to start checking to see what's going
> > on...
> > Any ideas of what could cause this?
> >
> > Thanks & 73,
> > Lee, KC9CDT
> >
> >
> >
> > ______________________________________________________________
> > Hallicrafters mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/hallicrafters
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Hallicrafters at mailman.qth.net
> >
> > List Administrator: Duane Fischer, W8DBF
> > ** For Assistance: dfischer at usol.com **
> >
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
>
>
>
> ------------------------------
>
> Message: 3
> Date: Mon, 18 Apr 2011 13:43:03 -0400 (EDT)
> From: kc9cdt at aol.com
> Subject: Re: [Hallicrafters] SX-117 Audio has too many lows
> To: km1h at jeremy.mv.com, hallicrafters at mailman.qth.net
> Message-ID: <8CDCC0733CE7E2D-2110-348AE at webmail-d134.sysops.aol.com>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
> CArl,
> Thanks, I will try that when I get back home from work,
> 73,
> Lee
>
>
>
> -----Original Message-----
> From: Carl <km1h at jeremy.mv.com>
> To: hallicrafters <hallicrafters at mailman.qth.net>; kc9cdt
> <kc9cdt at aol.com>
> Sent: Mon, Apr 18, 2011 1:41 pm
> Subject: Re: [Hallicrafters] SX-117 Audio has too many lows
>
>
> I dont remember the earlier thread but after looking at the schematic
> I'd
> suggest a little experimenting.
>
> Lift one end of the following and see what happens.
>
> C-93, the reactance is very high at audio but these micas can be leaky
>
> C-99, 100, 101. Should make any difference but.....
>
> C-97, its to prevent HV spikes but see what it does with a relatively
> low
> audio level
>
> And C-98, reduce to between 4.7 and 10uF, that will filter some of the
> lows.
>
> C-94 and 95 are already very low values which reduces the lows, see
> what
> happens when you go to half that.
>
> You cant do anything about the IF bandwidth but you can possibly tilt
> the
> audio bandpass a little in your favor.
>
> Carl
> KM1H
>
>
> ----- Original Message -----
> From: <kc9cdt at aol.com>
> To: <hallicrafters at mailman.qth.net>
> Sent: Sunday, April 17, 2011 10:01 PM
> Subject: [Hallicrafters] SX-117 Audio has too many lows
>
>
> > Hi everyone,
> > I have a beautiful SX-117 that hears super!
> > The audio however seems to have way too much lows in it and no highs.
> > Kind of muddy sounding.
> > I tried two different HAllicrafters speakers that are in the
> > PS150-120....same sounds.
> > It is much better with the Halli R-47, small desk speaker
> >
> > I plan to look at this tommorrow to start checking to see what's going
> > on...
> > Any ideas of what could cause this?
> >
> > Thanks & 73,
> > Lee, KC9CDT
> >
> >
> >
> > ______________________________________________________________
> > Hallicrafters mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/hallicrafters
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Hallicrafters at mailman.qth.net
> >
> > List Administrator: Duane Fischer, W8DBF
> > ** For Assistance: dfischer at usol.com **
> >
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Mon, 18 Apr 2011 13:49:54 -0400
> From: "Carl" <km1h at jeremy.mv.com>
> Subject: Re: [Hallicrafters] SX-117 Audio has too many lows
> To: "Carl" <km1h at jeremy.mv.com>, <hallicrafters at mailman.qth.net>,
> <kc9cdt at aol.com>
> Message-ID: <00d301cbfdf1$08714de0$6601a8c0 at DAVES>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Correct to:
>
> C-99, 100, 101. Should NOT make any difference but.....
>
> Carl
>
> ----- Original Message -----
> From: "Carl" <km1h at jeremy.mv.com>
> To: <hallicrafters at mailman.qth.net>; <kc9cdt at aol.com>
> Sent: Monday, April 18, 2011 1:41 PM
> Subject: Re: [Hallicrafters] SX-117 Audio has too many lows
>
>
> >I dont remember the earlier thread but after looking at the schematic I'd
> > suggest a little experimenting.
> >
> > Lift one end of the following and see what happens.
> >
> > C-93, the reactance is very high at audio but these micas can be leaky
> >
> > C-99, 100, 101. Should make any difference but.....
> >
> > C-97, its to prevent HV spikes but see what it does with a relatively low
> > audio level
> >
> > And C-98, reduce to between 4.7 and 10uF, that will filter some of the
> > lows.
> >
> > C-94 and 95 are already very low values which reduces the lows, see what
> > happens when you go to half that.
> >
> > You cant do anything about the IF bandwidth but you can possibly tilt the
> > audio bandpass a little in your favor.
> >
> > Carl
> > KM1H
> >
> >
> > ----- Original Message -----
> > From: <kc9cdt at aol.com>
> > To: <hallicrafters at mailman.qth.net>
> > Sent: Sunday, April 17, 2011 10:01 PM
> > Subject: [Hallicrafters] SX-117 Audio has too many lows
> >
> >
> >> Hi everyone,
> >> I have a beautiful SX-117 that hears super!
> >> The audio however seems to have way too much lows in it and no highs.
> >> Kind of muddy sounding.
> >> I tried two different HAllicrafters speakers that are in the
> >> PS150-120....same sounds.
> >> It is much better with the Halli R-47, small desk speaker
> >>
> >> I plan to look at this tommorrow to start checking to see what's going
> >> on...
> >> Any ideas of what could cause this?
> >>
> >> Thanks & 73,
> >> Lee, KC9CDT
> >>
> >>
> >>
> >> ______________________________________________________________
> >> Hallicrafters mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/hallicrafters
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:Hallicrafters at mailman.qth.net
> >>
> >> List Administrator: Duane Fischer, W8DBF
> >> ** For Assistance: dfischer at usol.com **
> >>
> >>
> >> This list hosted by: http://www.qsl.net
> >> Please help support this email list: http://www.qsl.net/donate.html
> >
> > ______________________________________________________________
> > Hallicrafters mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/hallicrafters
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Hallicrafters at mailman.qth.net
> >
> > List Administrator: Duane Fischer, W8DBF
> > ** For Assistance: dfischer at usol.com **
> >
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
>
>
>
> ------------------------------
>
> Message: 5
> Date: Mon, 18 Apr 2011 11:42:41 -0700 (PDT)
> From: Michael Mardit <wa2vqw at yahoo.com>
> Subject: [Hallicrafters] HT33
> To: hallicrafters at mailman.qth.net
> Message-ID: <339010.10599.qm at web161816.mail.bf1.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> I have been redesigning my (4)4cx300a amp to get the same output on the
> bands above 40m that I get on 160 through 40m.
> Would anyone happen to
> have a schematic on the HT33 amp that uses these 4cx300a's, or would
> someone be able to tell me how the tubes are configured in this amp?
> I
> have been using mine with 2400v on the plates, screens are grounded and
> metered for current, control grid is tied directly to cathode which has
> a 100 uHy choke to ground.
> The drive is placed across the 100 uHy
> choke.
> On 160 and 80m I get about 750 watts out with 100 watts of
> drive, but as the frequency increases, the power output falls off to
> where at 10m, I only get 200 watts out with 100 watts of drive.
> The
> tank circuit and the other plate components are not at issue. I believe
> that the problem lies in the input circuit or the way my tubes are
> configured...the design is based on an old W6SAI article from his Radio
> Handbook 17th edition.
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
> Tnx, Mike WA2VQW
>
> Celebrating my 50th year in the hobby as WA2VQW
>
>
>
> ------------------------------
>
> ______________________________________________________________
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>
> List Administrator: Duane Fischer, W8DBF
> ** For Assistance: dfischer at usol.com **
>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
> End of Hallicrafters Digest, Vol 87, Issue 21
> *********************************************
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