[Boatanchors] TCS tx Output /Re: Boatanchors Digest, Vol 88, Issue 10

Fri May 6 01:36:49 EDT 2011

Roger,
I could Email my TCS output circuit conversion article /CQ  Nov 1960, page 
7.1
Henry, oz3o n2nr (ex k2uoc)

----- Original Message ----- 
From: <boatanchors-request at mailman.qth.net>
To: <boatanchors at mailman.qth.net>
Sent: Friday, May 06, 2011 3:54 AM
Subject: Boatanchors Digest, Vol 88, Issue 10


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> Today's Topics:
>
>   1. TCS-9 output matching? (Roger Basford)
>   2. Re: TCS-9 output matching? (J. Forster)
>   3. Re: TCS-9 output matching? (Mark Foltarz)
>   4. Re: Hammarlund HQ-129X BFO Components Question? (Rod Hogg)
>   5. Re: Hammarlund HQ-129X BFO Components Question? (Chuck McGregor)
>   6. Re: TCS-9 output matching? (Roger Basford)
>   7. Re: TCS-9 output matching? (Al Klase)
>   8. Re: Hammarlund HQ-129X BFO Components Question? (Roger Shultz)
>   9. Monitor Receiver (David Knepper)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 05 May 2011 17:51:15 +0100
> From: Roger Basford <Roger at new-gate.co.uk>
> Subject: [Boatanchors] TCS-9 output matching?
> To: Boatanchors at mailman.qth.net
> Message-ID: <4DC2D583.1000602 at new-gate.co.uk>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hi All,
>
> I'm putting together a TCS-9/TCS-12 station and I read a mention of a
> simple mod to allow the TX to use coax-fed antennas. Has anyone got a
> copy of this? I'm getting  about 1.5 amps RF into a BC-375 dummy load
> but not had much success with an end-fed 66ft inverted L on 80 metres.
>
> Also, the handbook I downloaded has an addendum showing a mod to the
> antenna current meter, moving it from a ground lead to the feed to the
> antenna terminal, which seems more logical to me. Any thoughts on this?
> With an external RF ammeter in the feed to the dummy  load I get the
> same reading as the panel-mounted meter.
>
> 73
>
> Roger/G3VKM, Norfolk, England.
>
>
> ------------------------------
>
> Message: 2
> Date: Thu, 5 May 2011 10:10:05 -0700 (PDT)
> From: "J. Forster" <jfor at quik.com>
> Subject: Re: [Boatanchors] TCS-9 output matching?
> To: Roger at new-gate.co.uk
> Cc: boatanchors at mailman.qth.net
> Message-ID: <55173.12.6.201.2.1304615405.squirrel at popaccts.quikus.com>
> Content-Type: text/plain;charset=iso-8859-1
>
> Roger,
>
> This question will likely get a much better response on the MilSurplus 
> Group.
>
> Best,
>
> -John
>
> ==================
>
>
>
>> Hi All,
>>
>> I'm putting together a TCS-9/TCS-12 station and I read a mention of a
>> simple mod to allow the TX to use coax-fed antennas. Has anyone got a
>> copy of this? I'm getting  about 1.5 amps RF into a BC-375 dummy load
>> but not had much success with an end-fed 66ft inverted L on 80 metres.
>>
>> Also, the handbook I downloaded has an addendum showing a mod to the
>> antenna current meter, moving it from a ground lead to the feed to the
>> antenna terminal, which seems more logical to me. Any thoughts on this?
>> With an external RF ammeter in the feed to the dummy  load I get the
>> same reading as the panel-mounted meter.
>>
>> 73
>>
>> Roger/G3VKM, Norfolk, England.
>> ______________________________________________________________
>> Boatanchors mailing list
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>> Help: http://mailman.qth.net/mmfaq.htm
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>> ** For Assistance: dfischer at usol.com **
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>>
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>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Thu, 5 May 2011 11:07:59 -0700 (PDT)
> From: Mark Foltarz <Foltarz at rocketmail.com>
> Subject: Re: [Boatanchors] TCS-9 output matching?
> To: Roger at new-gate.co.uk, Boatanchors at mailman.qth.net
> Message-ID: <652837.50910.qm at web161508.mail.bf1.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
>
> I think the TCS sets are an "L network" output.
>
> Try adding a shunt capacitance like a couple broadcast band variables (
> something like 800 uufd )  across the antenna to ground to make it a PI 
> output.
>
> Hook the antenna up also across the antenna output and ground connections.
>
> Adjust the TCS as normal and then peak the shunting capacitor.
>
> Go back and forth  -  dipping and peaking - until satisfied.
>
> de KA4JVY
>
> Mark
>
>
>
>
> ----- Original Message ----
>> From: Roger Basford <Roger at new-gate.co.uk>
>> To: Boatanchors at mailman.qth.net
>> Sent: Thu, May 5, 2011 12:51:15 PM
>> Subject: [Boatanchors] TCS-9 output matching?
>>
>> Hi All,
>>
>> I'm putting together a TCS-9/TCS-12 station and I read a mention  of a
>> simple mod to allow the TX to use coax-fed antennas. Has anyone got a
>> copy of this? I'm getting  about 1.5 amps RF into a BC-375 dummy load
>> but not had much success with an end-fed 66ft inverted L on 80  metres.
>>
>> Also, the handbook I downloaded has an addendum showing a mod to  the
>> antenna current meter, moving it from a ground lead to the feed to the
>> antenna terminal, which seems more logical to me. Any thoughts on this?
>> With an external RF ammeter in the feed to the dummy  load I get the
>> same reading as the panel-mounted meter.
>>
>> 73
>>
>> Roger/G3VKM,  Norfolk,  England.
>> ______________________________________________________________
>> Boatanchors  mailing list
>> Home:  http://mailman.qth.net/mailman/listinfo/boatanchors
>> Help:  http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Boatanchors at mailman.qth.net
>>
>> List  Administrator: Duane Fischer, W8DBF
>> ** For Assistance: dfischer at usol.com **
>>
>>
>> This list  hosted by: http://www.qsl.net
>> Please help support this email list:  http://www.qsl.net/donate.html
>>
>
>
> ------------------------------
>
> Message: 4
> Date: Thu, 5 May 2011 13:37:32 -0500
> From: "Rod Hogg" <revcom at wbsnet.org>
> Subject: Re: [Boatanchors] Hammarlund HQ-129X BFO Components Question?
> To: "'Roger Shultz'" <nj2r at verizon.net>, <boatanchors at mailman.qth.net>
> Message-ID: <F6DFB4FE57DA4B0499DE1398CC0F1A43 at rod>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Roger,
> I have both the original Operating Instruction/Manual and the Rider book
> on the HQ-129X.  Both show that R46 is a 50K, BUT C43 is only listed as a
> "Silver Mica" part of Z1 BFO Assy.  Not much help there.
>
> Rod
> K?EQH
>
>
> -----Original Message-----
> From: boatanchors-bounces at mailman.qth.net
> [mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of Roger Shultz
> Sent: Wednesday, May 04, 2011 7:23 PM
> To: boatanchors at mailman.qth.net
> Subject: [Boatanchors] Hammarlund HQ-129X BFO Components Question?
>
> I'm reassembling a HQ-129X where the BFO assembly was taken apart by the
> previous owner.
>
> Fortunately the inductor L30, the variable C45 and fixed cap C44 are all
> there and I think I have it figured out where the wires from V9 pins 3 and 
> 4
> attach, however R46 which on the schematic looks to be 3K though the parts
> list reads 50K, and C43 listed only as a silver mica are both missing.
>
> Would anyone have the value of C43 and confirm that R46 is indeed 50K?
>
> Thanks, Roger, NJ2R
>
> ______________________________________________________________
> Boatanchors mailing list
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> Help: http://mailman.qth.net/mmfaq.htm
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> List Administrator: Duane Fischer, W8DBF
> ** For Assistance: dfischer at usol.com **
>
>
> This list hosted by: http://www.qsl.net
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>
>
> ------------------------------
>
> Message: 5
> Date: Thu, 05 May 2011 12:05:19 -0700
> From: Chuck McGregor <cbmcg at comcast.net>
> Subject: Re: [Boatanchors] Hammarlund HQ-129X BFO Components Question?
> To: Rod Hogg <revcom at wbsnet.org>
> Cc: boatanchors at mailman.qth.net
> Message-ID: <4DC2F4EF.8000501 at comcast.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hammarlund used a very similar BFO circuit in the Navy RBG receiver.
> The RBG manual shows that capacitor as 240mmf.  (and the resistor is 50K
> in that circuit, also).
>
> 73,
> Chuck K7MCG
>
> On 5/5/2011 11:37 AM, Rod Hogg wrote:
>> Roger,
>> I have both the original Operating Instruction/Manual and the Rider book
>>   on the HQ-129X.  Both show that R46 is a 50K, BUT C43 is only listed as 
>> a
>> "Silver Mica" part of Z1 BFO Assy.  Not much help there.
>>
>> Rod
>> K?EQH
>>
>>
>> -----Original Message-----
>> From: boatanchors-bounces at mailman.qth.net
>> [mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of Roger Shultz
>> Sent: Wednesday, May 04, 2011 7:23 PM
>> To: boatanchors at mailman.qth.net
>> Subject: [Boatanchors] Hammarlund HQ-129X BFO Components Question?
>>
>> I'm reassembling a HQ-129X where the BFO assembly was taken apart by the
>> previous owner.
>>
>> Fortunately the inductor L30, the variable C45 and fixed cap C44 are all
>> there and I think I have it figured out where the wires from V9 pins 3 
>> and 4
>> attach, however R46 which on the schematic looks to be 3K though the 
>> parts
>> list reads 50K, and C43 listed only as a silver mica are both missing.
>>
>> Would anyone have the value of C43 and confirm that R46 is indeed 50K?
>>
>> Thanks, Roger, NJ2R
>>
>> ______________________________________________________________
>> Boatanchors mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Boatanchors at mailman.qth.net
>>
>> List Administrator: Duane Fischer, W8DBF
>> ** For Assistance: dfischer at usol.com **
>>
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>> ______________________________________________________________
>> Boatanchors mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
>> Help: http://mailman.qth.net/mmfaq.htm
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>>
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>> ** For Assistance: dfischer at usol.com **
>>
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>>
>> -----
>> No virus found in this message.
>> Checked by AVG - www.avg.com
>> Version: 10.0.1209 / Virus Database: 1500/3617 - Release Date: 05/05/11
>>
>>
>>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Thu, 05 May 2011 20:17:30 +0100
> From: Roger Basford <Roger at new-gate.co.uk>
> Subject: Re: [Boatanchors] TCS-9 output matching?
> To: Mark Foltarz <Foltarz at rocketmail.com>
> Cc: Boatanchors at mailman.qth.net
> Message-ID: <4DC2F7CA.3020001 at new-gate.co.uk>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> OK Mark,
>
> I have tried a series cap, to artificially "shorten" the antenna but I
> didn't try one across the output to chassis, so will give that a try.
>
> 73
>
> Roger/G3VKM
>
>
> On 05/05/2011 19:07, Mark Foltarz wrote:
>> I think the TCS sets are an "L network" output.
>>
>> Try adding a shunt capacitance like a couple broadcast band variables (
>> something like 800 uufd )  across the antenna to ground to make it a PI 
>> output.
>>
>> Hook the antenna up also across the antenna output and ground 
>> connections.
>>
>> Adjust the TCS as normal and then peak the shunting capacitor.
>>
>> Go back and forth  -  dipping and peaking - until satisfied.
>>
>> de KA4JVY
>>
>> Mark
>>
>>
>>
>>
>
>
>
> ------------------------------
>
> Message: 7
> Date: Thu, 05 May 2011 15:33:59 -0400
> From: Al Klase <al at ar88.net>
> Subject: Re: [Boatanchors] TCS-9 output matching?
> To: boatanchors at mailman.qth.net
> Message-ID: <4DC2FBA7.5050909 at ar88.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Roger,
>
> All the suggestions that have been made seem valid.
>
> In any case, you'll want to keep track of the position of the ANT. COND.
> switch.  It connects a 50 pF 2500-volt cap either in series with or in
> parallel with the antenna connection.  It's completely out of the
> circuit in the "OFF" position.
>
> Al
>
> On 5/5/2011 3:17 PM, Roger Basford wrote:
>> OK Mark,
>>
>> I have tried a series cap, to artificially "shorten" the antenna but I
>> didn't try one across the output to chassis, so will give that a try.
>>
>> 73
>>
>> Roger/G3VKM
>>
>>
>> On 05/05/2011 19:07, Mark Foltarz wrote:
>>
>>> I think the TCS sets are an "L network" output.
>>>
>>> Try adding a shunt capacitance like a couple broadcast band variables (
>>> something like 800 uufd )  across the antenna to ground to make it a PI 
>>> output.
>>>
>>> Hook the antenna up also across the antenna output and ground 
>>> connections.
>>>
>>> Adjust the TCS as normal and then peak the shunting capacitor.
>>>
>>> Go back and forth  -  dipping and peaking - until satisfied.
>>>
>>> de KA4JVY
>>>
>>> Mark
>>>
>>>
>>>
>>>
>>>
>> ______________________________________________________________
>> Boatanchors mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Boatanchors at mailman.qth.net
>>
>> List Administrator: Duane Fischer, W8DBF
>> ** For Assistance: dfischer at usol.com **
>>
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>
> -- 
> Al Klase - N3FRQ
> http://www.skywaves.ar88.net/
>
>
>
> ------------------------------
>
> Message: 8
> Date: Thu, 05 May 2011 15:45:54 -0400
> From: "Roger Shultz" <nj2r at verizon.net>
> Subject: Re: [Boatanchors] Hammarlund HQ-129X BFO Components Question?
> To: "'Chuck McGregor'" <cbmcg at comcast.net>, "'Rod Hogg'"
> <revcom at wbsnet.org>
> Cc: boatanchors at mailman.qth.net
> Message-ID: <C30EE040C0B94BA8B8FBC07FF495B90E at nj2rintel>
> Content-Type: text/plain; charset=iso-8859-1
>
> Thanks to all who responded and 240 pf seems to be the unanimous choice 
> for
> C43. The original owner also saw the post and thinks he still has the cap,
> so perhaps it will be confirmed. If not, then 240 pf will be tried.
>
> 73, Roger, NJ2R
>
> -----Original Message-----
> From: Chuck McGregor [mailto:cbmcg at comcast.net]
> Sent: Thursday, May 05, 2011 3:05 PM
> To: Rod Hogg
> Cc: 'Roger Shultz'; boatanchors at mailman.qth.net
> Subject: Re: [Boatanchors] Hammarlund HQ-129X BFO Components Question?
>
> Hammarlund used a very similar BFO circuit in the Navy RBG receiver.
> The RBG manual shows that capacitor as 240mmf.  (and the resistor is 50K
> in that circuit, also).
>
> 73,
> Chuck K7MCG
>
> On 5/5/2011 11:37 AM, Rod Hogg wrote:
>> Roger,
>> I have both the original Operating Instruction/Manual and the Rider book
>>   on the HQ-129X.  Both show that R46 is a 50K, BUT C43 is only listed as
> a
>> "Silver Mica" part of Z1 BFO Assy.  Not much help there.
>>
>> Rod
>> K?EQH
>>
>>
>> -----Original Message-----
>> From: boatanchors-bounces at mailman.qth.net
>> [mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of Roger Shultz
>> Sent: Wednesday, May 04, 2011 7:23 PM
>> To: boatanchors at mailman.qth.net
>> Subject: [Boatanchors] Hammarlund HQ-129X BFO Components Question?
>>
>> I'm reassembling a HQ-129X where the BFO assembly was taken apart by the
>> previous owner.
>>
>> Fortunately the inductor L30, the variable C45 and fixed cap C44 are all
>> there and I think I have it figured out where the wires from V9 pins 3 
>> and
> 4
>> attach, however R46 which on the schematic looks to be 3K though the 
>> parts
>> list reads 50K, and C43 listed only as a silver mica are both missing.
>>
>> Would anyone have the value of C43 and confirm that R46 is indeed 50K?
>>
>> Thanks, Roger, NJ2R
>>
>> ______________________________________________________________
>> Boatanchors mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Boatanchors at mailman.qth.net
>>
>> List Administrator: Duane Fischer, W8DBF
>> ** For Assistance: dfischer at usol.com **
>>
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>> ______________________________________________________________
>> Boatanchors mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Boatanchors at mailman.qth.net
>>
>> List Administrator: Duane Fischer, W8DBF
>> ** For Assistance: dfischer at usol.com **
>>
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>>
>> -----
>> No virus found in this message.
>> Checked by AVG - www.avg.com
>> Version: 10.0.1209 / Virus Database: 1500/3617 - Release Date: 05/05/11
>>
>>
>>
>
>
>
> ------------------------------
>
> Message: 9
> Date: Thu, 5 May 2011 21:54:41 -0400
> From: "David Knepper" <collinsradio at comcast.net>
> Subject: [Boatanchors] Monitor Receiver
> To: <boatanchors at mailman.qth.net>
> Cc: collins_radios at yahoogroups.com
> Message-ID: <EF7DFC66240B4C37AB11904FAB29AC22 at KNEPPER>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> I will be taking my reproduction Collins 4A transmitter to Dayton in a few
> weeks.  I will be demonstrating this 1934 replica and would like to have a
> monitor receiver to hear the CW note.
>
> Is there an inexpensive way of doing this so that everyone at the Collins
> Forum can hear its signal.  The output goes into a dummy load.
>
> Lugging in a 75A-4 is out of the question!
>
> Thank you
>
> David Knepper, W3CRA/W3ST
> Editor of the Collins Journal
> Secretary of the Collins Radio Association
> www.collinsra.com
> Now on Facebook
> Join today
>
>
>
> ------------------------------
>
> ______________________________________________________________
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> Help: http://mailman.qth.net/mmfaq.htm
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>
> List Administrator: Duane Fischer, W8DBF
> ** For Assistance: dfischer at usol.com **
>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
> End of Boatanchors Digest, Vol 88, Issue 10
> *******************************************