[ARC5] Meter. Feet, Pounde etc.,,
Bob Macklin
macklinbob at msn.com
Fri Oct 1 10:59:39 EDT 2010
I'm converting a NEW 11M CB to 10M to use as the IF for VHF/UHF transceivers. And I am replacing the channel selector to eliminate the channel skips. I also hope to have 5KHz channel spacing.
Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
----- Original Message -----
From: Dennis Monticelli
To: Bob Macklin ; Discussion of AN/ARC-5 military radio equipment.
Sent: Friday, October 01, 2010 6:37 AM
Subject: Re: [ARC5] Meter. Feet, Pounde etc.,,
When I first started working in analog IC design, we used to have a rule of thumb. A discrete solid state circuit rendered in IC form would end up using 7 times the number of transistors to do the same job. While we didn't have a rule for tube-to-discrete transistor conversions, let's just say for sake of arguement that was roughly two times. Do the math and then mulitply one final time for the extra bells and whistles that invevitably get added and it's not hard to fathom how the same basic transceive function implemented with vacuum tubes ended up consuming so many transistors and IC's. Another factor is the heater burden of vacuum tubes, which greatly encouraged set designers of old to "get clever" and do elegantly simple designs.
BTW, converting an old CB to 10 or 12M is fun. Maybe not practical anymore, but still fun good buddy.
Dennis AE6C
On Sat, Sep 25, 2010 at 7:20 AM, Bob Macklin <macklinbob at msn.com> wrote:
The last few say I have been looking into converting a CB transceiver to a
10M transceiver. It sure takes a lot of transistors and ICs to do what we
used to do with less than 10 tubes.
Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
----- Original Message -----
From: "Henry Mei'l's" <meils at get2net.dk>
To: <jfor at quik.com>; "Discussion of AN/ARC-5 military radio equipment."
<arc5 at mailman.qth.net>
Sent: Friday, September 24, 2010 10:17 PM
Subject: Re: [ARC5] Meter. Feet, Pounde etc.,,
> Hello John,
>
> Yes, they usually can't compare with Stephen King or even Faulkner -- Pogo
> and Snoopy are more my style. Forgot to mention
> Millman-Halkias,"Integrated
> Electronic" which I found not very enlightening. I wonder if Dennis would
> agree with me on this.
> Unfortunately, digital electronics makes me think of chopped sausages --
> but
> where would my PC be if not for logic gates and tamed pulses.
> The othere day. all my incoming mails from August deleted after I
> compacted
> my mails - never happened before or since. Don't like just having to trust
> insect-like little chips and then to just hope for the best.
> Still remember my first (Raytheon?) CK722's; $1.50 - $2.50, a lot for a
> kid
> then -- one wrong move and bye-bye and on the train again to Cortland
> Street
> or Radio Shack, same travel time!
> At least tubes usually gave you some kind of warning and a chance to back
> off . In some ways I'm a diehard reactionary ;0).
>
> John Kraus's books on antennas and magnets would be nice to have --
> maybe
> I could get them on E-Bay --no success in finding them here,
> except in the science library.
>
> If anyone on this thread would like to sell a copy of Kraus, I'm
> interested!
>
> My off list mails to you consistently bounce. Re that time I complied with
> your request to stay off list but my mail came on list anyway. I don't
> have
> this problem with other addresses than yours. Are u sure you don't have me
> on a blocking/filter list ?--
> inadvertently, I assume
>
> Henry
>
>
> ----- Original Message -----
> From: "J. Forster" <jfor at quik.com>
> To: "Discussion of AN/ARC-5 military radio equipment."
> <arc5 at mailman.qth.net>
> Sent: Saturday, September 25, 2010 1:35 AM
> Subject: Re: [ARC5] Meter. Feet, Pounde etc.,,
>
>
>> Enjoy. They are not exactly recreational reading.
>>
>> Best,
>>
>> -John
>>
>> =============
>>
>>
>>> Thank you John.
>>> I'll see if I can get hold of some of the books you list -- at the
>>> technical
>>> library here.
>>>
>>> Henry
>>>
>>> ----- Original Message -----
>>> From: "J. Forster" <jfor at quik.com>
>>> To: "Discussion of AN/ARC-5 military radio equipment."
>>> <arc5 at mailman.qth.net>
>>> Sent: Friday, September 24, 2010 6:47 PM
>>> Subject: Re: [ARC5] Meter. Feet, Pounde etc.,,
>>>
>>>
>>>> Thomas, Sears & Zemansky, and The Feynman Lectures are classics.
>>>>
>>>> At MIT, we used Thomas followed by Hildebrand, Ingard & Kraushaur (?).
>>>>
>>>> The various permutations of Fano, Chu, & Adler for E&M; transmission
>>>> lines; antennas; fields, forces, and motion.
>>>>
>>>> For circuits, it was Bose & Stevens, then the SEEC series of 7 books.
>>>>
>>>> FWIW,
>>>>
>>>> -John
>>>>
>>>> ===============
>>>>
>>>>
>>>>
>>>> ______________________________________________________________
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>>>>
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>>>
>>>
>>> --------------------------------------------------------------------------------
>>>
>>>
>>>
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>>
>>
>> ______________________________________________________________
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>> Help: http://mailman.qth.net/mmfaq.htm
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>
>
> --------------------------------------------------------------------------------
>
>
>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 9.0.856 / Virus Database: 271.1.1/3156 - Release Date: 09/24/10
> 08:34:00
>
> ______________________________________________________________
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>
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