Re: [drakelist] Question abt Low Cap. Cables for the Drake Twins

[Garey Barrell]

Garey Barrell <[EMAIL PROTECTED]> made an utterence to the drakelist gang
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The original Drake supplied cables were all standard "microphone" 
shielded wire, with the exception of the "INJ" cable.  All but the INJ 
cable were similar to what is used in audio patch cables today.

All cables were 38" long tip-to-tip.
The INJ cable used a foam inner dielectric and phono connectors with a 
white insulation.  This cable measures 60 pF total capacity.

All other cables used the standard for the day clear polyethelene inner 
dielectric and phenolic (brown) insulated phono connectors and measures 
~100 pF.

Original Drake INJ Cable = 19 pF/ft = .160" o.d. (foam poly)
RG-62 = 93R = 13.5 pF/ft = 0.240" o.d.
RG-59 = 75R = 14.8 pF/ft = 0.242" o.d.
RG-6 = 75R = 16.2 pF/ft = 0.270" o.d.
RG-174= 50R = 30.8 pF/ft = 0.110" o.d.
Mic Cable (Belden 8410) = Hi-Z = 33 pf/ft = 0.160" o.d. (foam poly)
Mic Cable (Belden 8421) = Hi-Z = 16 pf/ft = 0.180" o.d. (foam poly)
R/S Audio Patch Cable = 28 pF/ft = 0.165" o.d. (poly)
The best choice is the Belden 8421 Audio cable from their "Brilliance" 
line.  It looks just like the other cables, and is very flexible.  The 
RG-62 is OK, but it is 50% larger and far less flexible.  RG-62 is also 
prone to shorting if bent over too small a radius.  The only pertinent 
factor is the total capacity, impedance and "loss" are not important.

Actually the standard R/S audio patch cable will work ok in the INJ role 
as long as the Injection alignment is done with the R-4 and T-4X cabled 
together.

The C-Line can use the same cables, except there are two cables (INJ and 
CAR OSC) that need to be low capacity.  The ANT lead should probably be 
RG-58 coax, but it's really not long enough to be significant.

73, Garey - K4OAH
Atlanta
Drake C-Line Service Manual


Eric Webner wrote:
My entire set of cables for my 4-line are labelled at each end, i.e. 
CAR OSC, INJ, ANTI-VOX, and so on. The cables all look the same, so I 
don't know how one would tell the difference if the labels fell off 
the cable ends.
 
73,
 
Eric

*/"[EMAIL PROTECTED]" <[EMAIL PROTECTED]>/* wrote:
"[EMAIL PROTECTED]" made an utterence to the drakelist gang
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Can you identify the factory supplied cables that came with the 4
line by
looking at the plug end of the cable?
If not,is there any other way to identify the low cap. cables?
Phil W8UV
 

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Re: [drakelist] Question abt Low Cap. Cables for the Drake Twins

[Ken, WA2LBI]

"Ken, WA2LBI" <[EMAIL PROTECTED]> made an utterence to the drakelist gang
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Eric,

IIRC, the INJ cable has phono connectors with a white insulation.

Ken, WA2LBI

Quoting Eric Webner <[EMAIL PROTECTED]>:

> My entire set of cables for my 4-line are labelled at each end, i.e. CAR OSC,
> INJ, ANTI-VOX, and so on. The cables all look the same, so I don't know how
> one would tell the difference if the labels fell off the cable ends.
>
> 73,
>
> Eric
>
>
> "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote:
>
> "[EMAIL PROTECTED]" made an utterence to the drakelist gang
> --
> Can you identify the factory supplied cables that came with the 4 line by
> looking at the plug end of the cable?
>
> If not,is there any other way to identify the low cap. cables?
>
> Phil W8UV
>
> 
> mail2web - Check your email from the web at
> http://mail2web.com/ .
>
>
> --
> On Behalf of "[EMAIL PROTECTED]"
> Submissions: drakelist@www.zerobeat.net
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> Zerobeat Web Page: http://www.zerobeat.net
> Brought to you courtesy of TLCHost.net http://www.tlchost.net/
> --
>
>
> -
> Do you Yahoo!?
>  Yahoo! Small Business - Try our new resources site!

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Re: [drakelist] Question abt Low Cap. Cables for the Drake Twins

[Garey Barrell]

Garey Barrell <[EMAIL PROTECTED]> made an utterence to the drakelist gang
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I thought this crap had about died out.   This is a SURE way to not 
receive any replies to your queries.

73, Garey - K4OAH
Atlanta
Drake C-Line Service Manual


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Re: [drakelist] Question abt Low Cap. Cables for the Drake Twins

[Eric Webner]

My entire set of cables for my 4-line are labelled at each end, i.e. CAR OSC, INJ, ANTI-VOX, and so on. The cables all look the same, so I don't know how one would tell the difference if the labels fell off the cable ends.
 
73,
 
Eric
"[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote:
"[EMAIL PROTECTED]" <[EMAIL PROTECTED]>made an utterence to the drakelist gang--Can you identify the factory supplied cables that came with the 4 line bylooking at the plug end of the cable?If not,is there any other way to identify the low cap. cables?Phil W8UVmail2web - Check your email from the web athttp://mail2web.com/ .--On Behalf of "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>Submissions: drakelist@www.zerobeat.netUnsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in bodyHopelessly Lost: [EMAIL PROTECTED] - help in body of messageZerobeat Web Page: http://www.zerobeat.netBro!
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[drakelist] Oscillation in TR7

[Rick May]

Rick May <[EMAIL PROTECTED]> made an utterence to the drakelist gang
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Hi Guys,
  I get an intermittent audio oscillation in my TR7.   It  wanders up 
and down the receiver regardless of band.  The aluminum cover over the 
IF cards seems to have something to do with it as when I remove it to do 
any trouble shooting,  the oscillation  never happens,  Drove me nuts 
until I figured out it only did it with the cover on.  Is there a 
certain sequence one should follow to tighten the srews?   I cleaned all 
the little copper grounding tabs on the cards but that didn't help.
Any thoughts.

Thanks in advance,
Rick KC0HH
Lamar, Co.
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