[AMRadio] ART13 help

[Bob Macklin]

The ART-13 was built to use a T-17. Has the mike amp been changed to use 
other types of mikes?

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"

----- Original Message ----- 
From: "Bob Peters" <rwpeters at swbell.net>
To: "'Discussion of AM Radio in the Amateur Service'" 
<amradio at mailman.qth.net>
Sent: Wednesday, December 01, 2010 7:23 AM
Subject: Re: [AMRadio] ART13 help


> Try using an AMPLIFIED D-104 on it...or use a pre amp into it ...The ART13
> requires a lot of Audio Drive... You will really need an antenna tuner on
> the output with a G5RV... Hope a little help
>
> Bob W1PE
>
> -----Original Message-----
> From: amradio-bounces at mailman.qth.net
> [mailto:amradio-bounces at mailman.qth.net] On Behalf Of Hirokik
> Sent: Wednesday, December 01, 2010 9:18 AM
> To: amradio at mailman.qth.net
> Subject: [AMRadio] ART13 help
>
> Hello,
>
>
>
>
> I have been restoring an ART13 and here is my current situation. I'd
> appreciate any suggestions or advice you may have.
>
>
> On Voice and MCW I can get very good output and the 200w incandescent bulb
> dummy load glows nice and bright. All the voltages on the plate and grid 
> of
> the 813, 811s, 1625s and 837 are at the correct values.
>
>
> Here are remaining issues:
>
>
> 1. On CW, there is no output whatsoever, even though the vacuum relay 
> clicks
> when I key. The VFO is not producing any signal on any frequency. No
> difference whether I am in Calibrate, Tune or Operate position. It feels 
> as
> though a previous owner somehow had disabled the CW function altogether.
>
>
> 2. On Voice, the  PTT switch works, but as I speak into the microphone (a
> T17 carbon mike) the dummy load bulb's brightness doesn't change; it 
> doesn't
> glow brighter as one would expect. Do you think the carbon inside has 
> become
> solidified and  dysfunctional? If so, any good remedy?
>
>
> I can try a dynamic mike from my modern HF gear (I will first switch to 
> the
> Dynamic position behind the frequency panel of the ART13.) I assume there 
> is
> enough amplification to accommodate a modern dynamic mike.
>
>
> 3. What would be the simplest, minimum workable long wire antenna for 80 
> and
> 40 meters? I can run a 20 to 90 feet long wire 20 feet above ground.   Do 
> I
> need a counterpoise? I do not have a good grounding system. Or,
> alternatively, I can erect a commercial vertical designed to accept a 50 
> ohm
> output.
>
>
> I only have a G5RV Jr.,(designed for 40-10 meter for use with modern HF
> rigs.)  Do you think I can "force feed" this antenna for 80 and 40? If so,
> should I insert some additional capacitance between the Antenna and Ground
> connections on the ART13?
>
>
> Thanks for your help.
>
>
> 73,
>
>
> Hiroki  AH6CY
>
>
>
>
>
>
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