[Milsurplus] PEWS: R-1808(V)2R
Fibber
digitalham at gmail.com
Sat Oct 22 23:26:12 EDT 2005
Anyone interested in one PEWS receiver? 139.25MHz. Looks nice and seems
to work when battery'd up. (although I have no way to be sure as I have
no TXer...)
I also have some kind of seismic probe on a long cord, but from the TMs
I've seen, it does not seem to go with this unit.
-Fibber
milsurplus-request at mailman.qth.net wrote:
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> Today's Topics:
>
> 1. Re: Old Battery replacement (WA5CAB at cs.com)
> 2. Re: Re: Barans Surplus Email address? (Tom Norris)
> 3. Re: Re: Barans Surplus Email address? (David Stinson)
> 4. Opinions: Leakage in Electrolytics (David Stinson)
> 5. Re: Opinions: Leakage in Electrolytics (W0rw at aol.com)
> 6. Re: Opinions: Leakage in Electrolytics (J. Forster)
> 7. Re: Opinions: Leakage in Electrolytics (WA5CAB at cs.com)
> 8. Re: Old Battery replacement (J. Forster)
> 9. Re: Old Battery replacement (J. Forster)
> 10. Re: Old Battery replacement (WA5CAB at cs.com)
> 11. Re: Opinions: Leakage in Electrolytics (Glenn Little WB4UIV)
> 12. Re: Opinions: Leakage in Electrolytics (gl4d21a at juno.com)
> 13. Re: Old Battery replacement (gl4d21a at juno.com)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 22 Oct 2005 09:48:18 EDT
> From: WA5CAB at cs.com
> Subject: Re: [Milsurplus] Old Battery replacement
> To: jfor at quik.com, Military1944 at aol.com
> Cc: milsurplus at mailman.qth.net
> Message-ID: <1d8.483da251.308b9d22 at cs.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> Battery BA-2 contains 15 A-cells for an open-circuit terminal voltage of 22.5
> volts. Outside dimensions are 3-7/16" L x 2-1/32" W x 2-19/32" H. It has
> two stripped and tinned wire leads. Early in the war, external markings and
> colour scheme were those of the various contractors. Later ones were OD external
> color with black lettering. The BA-30 is, of course, a D-cell.
>
> In a message dated 10/22/2005 1:10:23 AM Central Daylight Time, jfor at quik.com
> writes:
>
>>Any chance you could take a couple of pics of the battery internal
>>arrangement and exterior markings, and measure the outside dimensions of the battery?
>>I have a TG-5-B but no battery.
>>
>>Thanks,
>>-John
>>
>>Military1944 at aol.com wrote:
>>
>>
>>>Hi all,
>>>
>>>Have just obtained a very nice TG-5-B set with its webbing case etc. It
>>
>>even had its 1944 22v battery fitted, needless to say, it was dead ! (nothings
>>built to last these days)
>>
>
> Robert Downs - Houston
> <http://www.wa5cab.com> (Web Store)
> MVPA 9480
> <wa5cab at cs.com> (Primary email)
> <wa5cab at houston.rr.com> (Backup email)
>
>
> ------------------------------
>
> Message: 2
> Date: Sat, 22 Oct 2005 11:22:15 -0500
> From: Tom Norris <r390a at bellsouth.net>
> Subject: Re: [Milsurplus] Re: Barans Surplus Email address?
> To: milsurplus at mailman.qth.net
> Message-ID: <7D72F04F-823E-47F5-8D53-3381724B6DBF at bellsouth.net>
> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
>
> I'll have to echo Dennis. Bought things small and large. Always had
> good service, if there was ever a problem, which has been rare, it
> was taken care of right away.
>
> Tom NU4G
>
>
> On Oct 22, 2005, at 1:17 AM, W7QHO at aol.com wrote:
>
>
>>In a message dated 10/21/05 5:54:10 PM, recycler at swbell.net writes
>>(in part):
>>
>>
>>
>>
>>>I have had dealings with Baran........
>>>
>>>
>>
>>Bought stuff from Baranowski at 'fests, vehicle meets and on
>>eBay. Never
>>got stuck, but have never been able to get a telephone or e-mail
>>response out of
>>him either.
>>
>>Dennis D. W7QHO
>>Glendale, CA
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Sat, 22 Oct 2005 11:43:47 -0500
> From: David Stinson <arc5 at ix.netcom.com>
> Subject: Re: [Milsurplus] Re: Barans Surplus Email address?
> To: milsurplus at mailman.qth.net
> Message-ID: <435A6C43.8050206 at ix.netcom.com>
> Content-Type: text/plain; charset=us-ascii; format=flowed
>
> Tom Norris wrote:
>
>
>>I'll have to echo Dennis. Bought things small and large. Always had
>>good service, if there was ever a problem, which has been rare, it was
>>taken care of right away.
>
>
> But how can they take care of a problem if
> the won't even communicate?
> Do you actually have to drive up there
> and take it up with them face-to-face?
> If so, it hardly seems worth the trouble.
> How can you trust someone who won't take the
> trouble to talk to you?
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sat, 22 Oct 2005 11:49:45 -0500
> From: David Stinson <arc5 at ix.netcom.com>
> Subject: [Milsurplus] Opinions: Leakage in Electrolytics
> To: Boatanchors <boatanchors at theporch.com>, Milsurplus at mailman.qth.net
> Message-ID: <435A6DA9.7010201 at ix.netcom.com>
> Content-Type: text/plain; charset=us-ascii; format=flowed
>
> I've been repairing a few Drake AC-4 power supplies lately.
> Many of the filter caps read lower than rated capacity,
> but also have low leakage current- typically 2 milliamps or
> less at full rated voltage. In these cases, I've
> paralleled another cap across them to bring the combination
> up to spec. This seems to have worked fine.
> If the original cap leaks worse than about 2 ma, I replace it.
>
> Your opinions on this method?
>
> 73 Dave S.
>
>
>
> ------------------------------
>
> Message: 5
> Date: Sat, 22 Oct 2005 13:04:45 EDT
> From: W0rw at aol.com
> Subject: Re: [Milsurplus] Opinions: Leakage in Electrolytics
> To: arc5 at ix.netcom.com, boatanchors at theporch.com,
> Milsurplus at mailman.qth.net
> Message-ID: <154.5c17cec1.308bcb2d at aol.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> Hi Dave.
> i would not parallel old Al Caps.
> If they are dopping in capacity they will soon develop AC leakage
> that will result in ripple and hum in your system.
> The parallel cap won't be able to remove the AC resistance.
> You can leave it physically in the radio but cut it out of the circuit.
> Paul w0rw
>
>
> ------------------------------
>
> Message: 6
> Date: Sat, 22 Oct 2005 13:45:30 -0400
> From: "J. Forster" <jfor at quik.com>
> Subject: Re: [Milsurplus] Opinions: Leakage in Electrolytics
> To: David Stinson <arc5 at ix.netcom.com>
> Cc: Boatanchors <boatanchors at theporch.com>, Milsurplus at mailman.qth.net
> Message-ID: <435A7ABA.6F078A96 at quik.com>
> Content-Type: text/plain; charset=us-ascii
>
> Is this before or after reforming?
> -John
>
> David Stinson wrote:
>
>
>>I've been repairing a few Drake AC-4 power supplies lately.
>>Many of the filter caps read lower than rated capacity,
>>but also have low leakage current- typically 2 milliamps or
>>less at full rated voltage. In these cases, I've
>>paralleled another cap across them to bring the combination
>>up to spec. This seems to have worked fine.
>>If the original cap leaks worse than about 2 ma, I replace it.
>>
>>Your opinions on this method?
>>
>>73 Dave S.
>
>
>
>
>
>
> ------------------------------
>
> Message: 7
> Date: Sat, 22 Oct 2005 14:01:50 EDT
> From: WA5CAB at cs.com
> Subject: Re: [Milsurplus] Opinions: Leakage in Electrolytics
> To: arc5 at ix.netcom.com, boatanchors at theporch.com,
> Milsurplus at mailman.qth.net
> Message-ID: <83.32c193b9.308bd88e at cs.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> Dave,
>
> If by lower than marked capacitance, you mean below even the rather wide
> tolerance marked on the can, I'm afraid I will have to agree with Paul. I would
> probably open up and rebuild the old cans but as it's Drake and not green or
> black, no one may care.
>
> In a message dated 10/22/2005 12:05:31 PM Central Daylight Time, W0rw at aol.com
> writes:
>
>>i would not parallel old Al Caps.
>>If they are dopping in capacity they will soon develop AC leakage
>>that will result in ripple and hum in your system.
>>The parallel cap won't be able to remove the AC resistance.
>>You can leave it physically in the radio but cut it out of the circuit.
>
>
> Robert Downs - Houston
> <http://www.wa5cab.com> (Web Store)
> MVPA 9480
> <wa5cab at cs.com> (Primary email)
> <wa5cab at houston.rr.com> (Backup email)
>
>
> ------------------------------
>
> Message: 8
> Date: Sat, 22 Oct 2005 14:03:49 -0400
> From: "J. Forster" <jfor at quik.com>
> Subject: Re: [Milsurplus] Old Battery replacement
> To: WA5CAB at cs.com
> Cc: milsurplus at mailman.qth.net, Military1944 at aol.com
> Message-ID: <435A7F05.7A4B4C8E at quik.com>
> Content-Type: text/plain; charset=us-ascii
>
> Thank you. Were the cells positioned in a 3 x 5 square array? Where in the world
> do you get A cells??
>
> -John
>
>
>
> WA5CAB at cs.com wrote:
>
>
>>Battery BA-2 contains 15 A-cells for an open-circuit terminal voltage of 22.5
>>volts. Outside dimensions are 3-7/16" L x 2-1/32" W x 2-19/32" H. It has two
>>stripped and tinned wire leads. Early in the war, external markings and
>>colour scheme were those of the various contractors. Later ones were OD
>>external color with black lettering. The BA-30 is, of course, a D-cell.
>>
>>In a message dated 10/22/2005 1:10:23 AM Central Daylight Time, jfor at quik.com
>>writes:
>>
>>
>>>Any chance you could take a couple of pics of the battery internal
>>>arrangement and exterior markings, and measure the outside dimensions of the
>>>battery? I have a TG-5-B but no battery.
>>>
>>>Thanks,
>>>-John
>>
>
>
>
> ------------------------------
>
> Message: 9
> Date: Sat, 22 Oct 2005 14:34:26 -0400
> From: "J. Forster" <jfor at quik.com>
> Subject: Re: [Milsurplus] Old Battery replacement
> To: WA5CAB at cs.com
> Cc: Milsurplus <milsurplus at mailman.qth.net>
> Message-ID: <435A8631.631048C7 at quik.com>
> Content-Type: text/plain; charset=us-ascii
>
> I did the same arithmetic and we basically agree. It might be possible to make a
> reusable holder from cut down RS holders .( perhaps 3 x 4AA; and 1 x 4AA cut
> down to three), wired together in series and put in a box.
>
> Thanks,
> -J
>
>
>
> WA5CAB at cs.com wrote:
>
>
>>John,
>>
>>Neither TM 11-415 nor the R&SB table give the cell arrangement, but if you
>>divide the length by 5 and the width by 3 you get essentially the same
>>number. So I would say that 3x5 is correct.
>>
>>I'm not sure that A-cells are still made. I haven't seen a loose one in
>>years. And most of the BA- numbers that I recognize (like BA-39 or BA-48) and
>>that used them are no longer produced. If you were rebuilding a BA-2, you'd
>>probably have to use AA's with a 5/8" dia. tube around them to fill up the
>>space.
>
>
>
>
>
> ------------------------------
>
> Message: 10
> Date: Sat, 22 Oct 2005 14:49:12 EDT
> From: WA5CAB at cs.com
> Subject: Re: [Milsurplus] Old Battery replacement
> To: jfor at quik.com
> Cc: milsurplus at mailman.qth.net
> Message-ID: <1c5.333a5c60.308be3a8 at cs.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> Yes, or Keystone make several 3 x AA holders. Photos of some are in the
> Allied catalog and online.
>
> In a message dated 10/22/2005 1:35:28 PM Central Daylight Time, jfor at quik.com
> writes:
>
>>I did the same arithmetic and we basically agree. It might be possible to
>>make a reusable holder from cut down RS holders .( perhaps 3 x 4AA; and 1 x
>>4AA cut down to three), wired together in series and put in a box.
>
>
> Robert Downs - Houston
> <http://www.wa5cab.com> (Web Store)
> MVPA 9480
> <wa5cab at cs.com> (Primary email)
> <wa5cab at houston.rr.com> (Backup email)
>
>
> ------------------------------
>
> Message: 11
> Date: Sat, 22 Oct 2005 15:30:43 -0400
> From: Glenn Little WB4UIV <glennmaillist at bellsouth.net>
> Subject: Re: [Milsurplus] Opinions: Leakage in Electrolytics
> To: David Stinson <arc5 at ix.netcom.com>, Boatanchors
> <boatanchors at theporch.com>, Milsurplus at mailman.qth.net
> Message-ID: <6.1.0.6.2.20051022152558.02b90110 at mail.bellsouth.net>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
> It has been my experience that electrolytics fail with age. When I check
> electrolytics, I check capacity, ESR and leakage. If the capacity is what
> is marked on the can or less, the capacitor is replaced. If the leakage is
> excessive it is replaced. If the ESR is high it is replaced. I feel that it
> is cheaper to replace a failed or failing capacitor while I have the device
> on the bench.
>
> If the capacitor fail any of the above three criteria, the capacitor is bad
> and should be replaced.
>
> Just what I do. YMMV.
>
> 73
> Glenn
> WB4UIV
>
> At 12:49 PM 10/22/05, David Stinson wrote:
>
>>I've been repairing a few Drake AC-4 power supplies lately.
>>Many of the filter caps read lower than rated capacity,
>>but also have low leakage current- typically 2 milliamps or
>>less at full rated voltage. In these cases, I've
>>paralleled another cap across them to bring the combination
>>up to spec. This seems to have worked fine.
>>If the original cap leaks worse than about 2 ma, I replace it.
>>
>>Your opinions on this method?
>>
>>73 Dave S.
>>
>>______________________________________________________________
>>Milsurplus mailing list
>>Home: http://mailman.qth.net/mailman/listinfo/milsurplus
>>Help: http://mailman.qth.net/mmfaq.htm
>>Post: mailto:Milsurplus at mailman.qth.net
>
>
>
>
>
> ------------------------------
>
> Message: 12
> Date: Sat, 22 Oct 2005 22:28:10 GMT
> From: "gl4d21a at juno.com" <gl4d21a at juno.com>
> Subject: Re: [Milsurplus] Opinions: Leakage in Electrolytics
> To: arc5 at ix.netcom.com
> Cc: Milsurplus at mailman.qth.net
> Message-ID: <20051022.152855.11014.27732 at webmail42.nyc.untd.com>
> Content-Type: text/plain
>
> David:
>
> In addition to the other comments, remember that 2 ma. times, say, 300 volts is 6 tenths of a watt. Not much until you consider it is buried inside the capacitor, and has to get out through a less than excellent thermal path. So, that serves to hasten the ongoing demise of the device. Who knows what hot spot temperatures may be generated? The real problem usually then happens when the capacitor barfs all the corrosive junk inside out through the seal, and ruins a bunch of stuff under the chassis. Replace just on general principles.
>
> 73,
> George
> W5VPQ
>
>
> ___________________________________________________________________
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>
>
> ------------------------------
>
> Message: 13
> Date: Sat, 22 Oct 2005 22:35:10 GMT
> From: "gl4d21a at juno.com" <gl4d21a at juno.com>
> Subject: Re: [Milsurplus] Old Battery replacement
> To: jfor at quik.com
> Cc: WA5CAB at cs.com, milsurplus at mailman.qth.net
> Message-ID: <20051022.153556.11014.27741 at webmail42.nyc.untd.com>
> Content-Type: text/plain
>
> John:
>
> I have several field strength meters which run on 18 volts, requiring two 9 volt stacks (6 cells) of AA NiCads. I went through a number of the (soft) white plastic battery holders as sold by RatShack and others, as the ends invariably broke and popped loose due to spring pressure. I found black holders molded from a thermosetting compound from Philmore (!) and also from another manufacturer I don't remember, but sold by Mouser. So, if you can't fit in the preferred metal holders from Keystone or others, steer clear of the soft white plastic type, or reinforce the heck out of them.
>
> 73,
> George
> W5VPQ
>
>
> ___________________________________________________________________
> Try Juno Platinum for Free! Then, only $9.95/month!
> Unlimited Internet Access with 250MB of Email Storage.
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>
>
> ------------------------------
>
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> End of Milsurplus Digest, Vol 18, Issue 30
> ******************************************
>
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