[ARC5] ARC5 Digest, Vol 144, Issue 93

Sat Jan 30 06:47:31 EST 2016

BFO in R10/R11

Jeep I am a little  confused about this. There is no space/dimple in my R11 
for anything like this..also as far as I can remember the detector/avc is 
used as a first audio before the af output so this would have to be changed 
in order to use this tube for the bfo..the short answer to your question is 
yes I did put a bfo into it but I cheated a little (a lot)..I fed a 239khz 
signal from a postage stamp solidstate osc externally into the detector and 
it worked fine..with a bit of imagination and some space saving underneath 
the chassis you could fit a small board and power it from the filament dc'd 
..this would avoid any hacking to the rx other than removing a few bathtubs 
to make the space..alternately I had thought about putting a triode with a 
crystal or stock bfo coil on the back dynamotor area (no dynas here)..there 
is lots of space but then you're hacking..getting an 85 or 239 khz crystal 
has proved impossible and the bfo coils are not very plentiful either..I 
agree that the type 12 are beautifully made and work very well indeed..73 de 
Pat/EI7CN

-----Original Message----- 
From: arc5-request at mailman.qth.net
Sent: Friday, January 29, 2016 2:17 PM
To: arc5 at mailman.qth.net
Subject: ARC5 Digest, Vol 144, Issue 93

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Today's Topics:

   1. Re: VHF ARC-5 Receiver Value (David Stinson)
   2. Re: VHF ARC-5 Receiver Value (Tim)
   3. Re: VHF Not  ARC-5 Receiver Value (WA5CAB at cs.com)
   4. Re: VHF Not  ARC-5 Receiver Value (Mike Morrow)
   5. Need usabe chassis or? (DSP3)

----------------------------------------------------------------------

Message: 1
Date: Thu, 28 Jan 2016 21:04:54 -0600
From: "David Stinson" <arc5 at ix.netcom.com>
To: "ARC-5" <arc5 at mailman.qth.net>
Subject: Re: [ARC5] VHF ARC-5 Receiver Value
Message-ID: <F5D80A1C030B49718089B4845FAAD779 at DaddyPC>
Content-Type: text/plain; format=flowed; charset="utf-8";
reply-type=original

----- Original Message ----- 
From: "Mark K3MSB" <mark.k3msb at gmail.com>
Sent: Thursday, January 28, 2016 8:51 PM
Subject: Re: [ARC5] VHF ARC-5 Receiver Value

> From the seller:
>
> the radio doesn't have a dynamotor.  tag on front panel
> receiver  radio  r-508/arc
> serial no.1611
> made by aircraft radio corp.
> order no  xxxx
> 28vdc

That's not an R-28/ARC-5.
It's "type-12."   I love those rigs.
I think they're under-appreciated.
And, sorry to say, even less chance for it getting $60
at a hamfest.  I've been 'festing for 40+ years and
never seen one go for more than $20 or $25 at
a hamfest.

------------------------------

Message: 2
Date: Thu, 28 Jan 2016 19:13:39 -0800
From: Tim <timsamm at gmail.com>
To: David Stinson <arc5 at ix.netcom.com>
Cc: ARC-5 <arc5 at mailman.qth.net>
Subject: Re: [ARC5] VHF ARC-5 Receiver Value
Message-ID:
<CAG9SHKO74wgQ8Rce29Tdjic5Sf8wvNFQUVtgBWFyYrKiatBpYA at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi Mark  - There is an R-508 currently on the Fair Radio site for $55.
https://www.fairradio.com/catalog.php?mode=search&keywords=type+12&submit.x=0&submit.y=0

I bought several (R-19 labels) from Fair about 3 years ago -before they
were cool! - for $20 each if I recall.  So I'm with Dave on my hamfest
experiences as well. They are very under appreciated IMHO.  They work well,
don't require Ham-mering to be useful and they sound great (transmitters
too).
Tim
N6CC

On Thu, Jan 28, 2016 at 7:04 PM, David Stinson <arc5 at ix.netcom.com> wrote:

>
> ----- Original Message ----- From: "Mark K3MSB" <mark.k3msb at gmail.com>
> Sent: Thursday, January 28, 2016 8:51 PM
> Subject: Re: [ARC5] VHF ARC-5 Receiver Value
>
>
> From the seller:
>>
>> the radio doesn't have a dynamotor.  tag on front panel
>> receiver  radio  r-508/arc
>> serial no.1611
>> made by aircraft radio corp.
>> order no  xxxx
>> 28vdc
>>
>
> That's not an R-28/ARC-5.
> It's "type-12."   I love those rigs.
> I think they're under-appreciated.
> And, sorry to say, even less chance for it getting $60
> at a hamfest.  I've been 'festing for 40+ years and
> never seen one go for more than $20 or $25 at
> a hamfest.
>
>
>
> ______________________________________________________________
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Message: 3
Date: Fri, 29 Jan 2016 00:17:58 -0500
From: WA5CAB at cs.com
To: arc5 at mailman.qth.net
Subject: Re: [ARC5] VHF Not  ARC-5 Receiver Value
Message-ID: <5f1c84.608d76a.43dc5006 at cs.com>
Content-Type: text/plain; charset="us-ascii"

I agree with Dave and others as to typical hamfest prices. The R-508/ARC is
part of AN/ARC-60. Used in light aircraft like the L-19 and in light
helicopters like the H-13. It is also the A.R.C. R-19 and used in some 
civilian
light aircraft in the late 40's and 50's. I wouldn't bother to haul it to a
hamfest. Better chance of getting any more than $20-$25 on eBay.

Robert Downs - Houston

I agree with Dave and others as to typical hamfest prices. The R-508/ARC is
part of AN/ARC-60. Used in light aircraft like the L-19 and in light
helicopters like the H-13. It is also the A.R.C. R-19 and used in some 
civilian
light aircraft in the late 40's and 50's. I wouldn't bother to haul it to a
hamfest. Better chance of getting any more than $20-$25 on eBay.

In a message dated 01/28/2016 21:14:33 PM Central Standard Time,
timsamm at gmail.com writes:
> Hi Mark - There is an R-508 currently on the Fair Radio site for $55.
> https://www.fairradio.com/catalog.php?mode=search&keywords=type+12&
> submit.x=0&submit.y=0
>
I bought several (R-19 labels) from Fair about 3 years ago -before they
were cool! - for $20 each if I recall. So I'm with Dave on my hamfest
experiences as well. They are very under appreciated IMHO. They work well, 
don't
require Ham-mering to be useful and they sound great (transmitters too).

Tim
N6CC

On Thu, Jan 28, 2016 at 7:04 PM, David Stinson <arc5 at ix.netcom.com> wrote:
>
> ----- Original Message ----- From: "Mark K3MSB" <mark.k3msb at gmail.com>
> Sent: Thursday, January 28, 2016 8:51 PM
> Subject: Re: [ARC5] VHF ARC-5 Receiver Value
>
>
> >> From the seller:
>>
>> the radio doesn't have a dynamotor. tag on front panel
>> receiver radio r-508/arc
>> serial no.1611
>> made by aircraft radio corp.
>> order no xxxx
>> 28vdc
>>
> That's not an R-28/ARC-5.
It's "type-12." I love those rigs.
I think they're under-appreciated.
And, sorry to say, even less chance for it getting $60
at a hamfest. I've been 'festing for 40+ years and
never seen one go for more than $20 or $25 at
a hamfest.
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Message: 4
Date: Fri, 29 Jan 2016 00:48:22 -0600 (GMT-06:00)
From: Mike Morrow <kk5f at earthlink.net>
To: arc5 at mailman.qth.net
Subject: Re: [ARC5] VHF Not  ARC-5 Receiver Value
Message-ID:
<8084865.1454050102817.JavaMail.root at elwamui-polski.atl.sa.earthlink.net>

Content-Type: text/plain; charset=UTF-8

Robert wrote:

> R-508/ARC is part of AN/ARC-60. Used in light aircraft like the
> L-19 and in light helicopters like the H-13. It is also the
> A.R.C. R-19 and used in some civilian light aircraft in the late
> 40's and 50's.

The AN/ARC-60 was still in use in USN T-34 trainers at NAS Corpus Christi in 
1972.

Mike / KK5F

------------------------------

Message: 5
Date: Fri, 29 Jan 2016 09:17:21 -0500
From: DSP3 <jeepp at comcast.net>
To: MRCA at mailman.qth.net, "arc5 at mailman.qth.net"
<arc5 at mailman.qth.net>
Subject: [ARC5] Need usabe chassis or?
Message-ID: <56AB7471.7020900 at comcast.net>
Content-Type: text/plain; charset="utf-8"; Format="flowed"

Gentlemen,

   I have a bit of a quandary, here.  I acquired a Navy R-24 receiver
that had been partially stripped and with really bad condition cotton
wiring.  I elected to remove the IFT set and the "front-end coil rack
(and other usable parts).  I intended to use an available coil-less
BC-453 as a conversion chassis.  However, the IFTs from SCR-274-N,
although schematically same, are mechanically different.  They won't
simply plug in.  The mounting tab plate is rotated slightly.  OK... at
least I understand the issues.  Looking at the A.R.C. R-10 and R-11, I
found that the coils, although again schematically same, the coils are
not mounted via chassis plugs.  They are hard-wired.  So, can't do it
that way.  Bottom line is, does anyone have a Navy ARC-5/R-23 in good
condition, perhaps sans IFTs?  I've got this very nice, un-modified
BC-453 (no IFTs) or a perfect working condition ARC R-11 that could be
traded.

Finally, a general question:  Has anyone ever installed a BFO in an ARC
R-10 or R-11?  I see the space for the BFO transformer and the dimple
for an adjustment hole.   Tnx.

Jeep - K3HVG
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End of ARC5 Digest, Vol 144, Issue 93
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