[ARC5] Missing meter in Phantom Antenna A-61-A (#7777)

robinson at tuberadio.com robinson at tuberadio.com
Sat Apr 9 03:37:19 EDT 2016


Hi there,

Thank you for the information.
What type of capacitor is inside?
It is a vacumn capacitor?

My meter is what Mike said,
0-4 (non linear scale) internal thermocouple
has a white scale labeled AMPERES R.F.
WESTON 507 (metal case) ARC #7781

Whereas the ANTENNA RELAY UNIT type BC-442-AM or RE-2/ARC-5
0-10 (linear scale) external thermocouple
has a black scale lebeled ANTENNA CURRENT INDICATOR
GENERAL ELECTRIC (DW-52) metal case, BC-442 and RE-2 (CCT manufactured)
SANGAMO (Weston 507) metal case, RE-2 (CBY manufactured)

Regards
ray

On 2016-04-09 12:28, Tom Bridgers wrote:
> Was wondering if anyone knows the spec's for the meter that goes
> into the Phantom Antenna A-61-A (#7777)?
> 
> Bought it off of the bay, with the meter gone. So I wasn't surprised.
> Anyway, if you have the spec's for it, sure would appreciate you
> sending the info to me.
> Thanks,
> -Tom KE4RHH
>> 
>> ----------------------------------------------------------------------
>> 
>> Message: 1
>> Date: Fri, 08 Apr 2016 16:04:56 +1000
>> From: robinson at tuberadio.com
>> To: ARC-5 <arc5 at mailman.qth.net>
>> Subject: [ARC5] Phantom Antenna A-61-A (#7777)
>> Message-ID: <eec339463fca4116dc219c533dad0675 at tuberadio.com>
>> Content-Type: text/plain; charset=UTF-8; format=flowed
>> 
>> Hi there,
>> 
>> My A-61-A Phantom antenna has been got at.
>> 
>> It did not seem to work correctly, so I opened it up,
>> and found it had been converted to 50 ohms.
>> The series resistor had been rewired for 20 ohms.
>> It is just several 2 ohm resistors in series/parallel
>> so it was easy to put it back to the original 5 ohms.
>> 
>> There are 2 clips which had a 30 ohm resistor clipped in.
>> It was removed.
>> What is the capacitor that goes in here?
>> I assume is it a 100 pf vacumn capacitor
>> similar to the 50 pf in the antenna relay.
>> The 50 pf is too short (3.35 inches long).
>> It seems to need a 4.5 inch long capacitor,
>> of 100 pf.
>> 
>> Is this reasoning correct?
>> 
>> Regards
>> Ray
>> 
>> 
>> 
>> ------------------------------
>> 
>> Message: 2
>> Date: Fri, 8 Apr 2016 13:09:54 +0000 (UTC)
>> From: J Mcvey <ac2eu at yahoo.com>
>> To: "robinson at tuberadio.com" <robinson at tuberadio.com>, ARC-5
>> <arc5 at mailman.qth.net>
>> Subject: Re: [ARC5] Phantom Antenna A-61-A (#7777)
>> Message-ID:
>> <1595164465.1587523.1460120994527.JavaMail.yahoo at mail.yahoo.com>
>> Content-Type: text/plain; charset="utf-8"
>> 
>> I believe 100pf is correct.If I'm not mistaken, the ARC5 manual has a 
>> schematic of the phantom antenna if you want to be sure.
>> 
>> 
>> On Friday, April 8, 2016 2:04 AM, "robinson at tuberadio.com" 
>> <robinson at tuberadio.com> wrote:
>> 
>> 
>> Hi there,
>> 
>> My A-61-A Phantom antenna has been got at.
>> 
>> It did not seem to work correctly, so I opened it up,
>> and found it had been converted to 50 ohms.
>> The series resistor had been rewired for 20 ohms.
>> It is just several 2 ohm resistors in series/parallel
>> so it was easy? to put it back to the original 5 ohms.
>> 
>> There are 2 clips which had a 30 ohm resistor clipped in.
>> It was removed.
>> What is the capacitor that goes in here?
>> I assume is it a 100 pf vacumn capacitor
>> similar to the 50 pf in the antenna relay.
>> The 50 pf is too short (3.35 inches long).
>> It seems to need a 4.5 inch long capacitor,
>> of 100 pf.
>> 
>> Is this reasoning correct?
>> 
>> Regards
>> Ray
>> 
>> ______________________________________________________________
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>> ------------------------------
>> 
>> Message: 3
>> Date: Fri, 8 Apr 2016 09:56:19 -0400
>> From: Michael Hanz <aaf-radio-1 at aafradio.org>
>> To: ARC-5 <arc5 at mailman.qth.net>
>> Subject: Re: [ARC5] Phantom Antenna A-61-A (#7777)
>> Message-ID: <5707B883.5000705 at aafradio.org>
>> Content-Type: text/plain; charset="windows-1252"; Format="flowed"
>> 
>> Not in the ARC-5 manual as far as I recall, but it *is* in one of the
>> SCR-274N manuals (T.O. 12R2-3SCR274-2), shown below:
>> 
>> 73,
>> Mike KC4TOS
>> 
>> On 4/8/2016 9:09 AM, J Mcvey via ARC5 wrote:
>>> I believe 100pf is correct.If I'm not mistaken, the ARC5 manual has 
>>> a
>>> schematic of the phantom antenna if you want to be sure.
>>> 
>>> 
>>> On Friday, April 8, 2016 2:04 AM, "robinson at tuberadio.com"
>>> <robinson at tuberadio.com> wrote:
>>> 
>>> 
>>> Hi there,
>>> 
>>> My A-61-A Phantom antenna has been got at.
>>> 
>>> It did not seem to work correctly, so I opened it up,
>>> and found it had been converted to 50 ohms.
>>> The series resistor had been rewired for 20 ohms.
>>> It is just several 2 ohm resistors in series/parallel
>>> so it was easy to put it back to the original 5 ohms.
>>> 
>>> There are 2 clips which had a 30 ohm resistor clipped in.
>>> It was removed.
>>> What is the capacitor that goes in here?
>>> I assume is it a 100 pf vacumn capacitor
>>> similar to the 50 pf in the antenna relay.
>>> The 50 pf is too short (3.35 inches long).
>>> It seems to need a 4.5 inch long capacitor,
>>> of 100 pf.
>>> 
>>> Is this reasoning correct?
>>> 
>>> Regards
>>> Ray
>>> 
>>> 
>>> ______________________________________________________________
>>> ARC5 mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/arc5
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:ARC5 at mailman.qth.net <mailto:ARC5 at mailman.qth.net>
>>> 
>>> This list hosted by: http://www.qsl.net <http://www.qsl.net/>
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> 
>>> 
>>> 
>>> 
>>> ______________________________________________________________
>>> ARC5 mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/arc5
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:ARC5 at mailman.qth.net
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>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
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