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

Fri May 6 01:39:07 EDT 2011

CQ Nov 1960, page 71 (not 7.1 -- the kind of typo I never do, so it's got to 
be my word processing program)

----- Original Message ----- 
From: "Henry Mei'l's" <meils at get2net.dk>
To: "Roger Basford" <roger at new-gate.co.uk>
Cc: <boatanchors at mailman.qth.net>
Sent: Friday, May 06, 2011 7:36 AM
Subject: TCS tx Output /Re: Boatanchors Digest, Vol 88, Issue 10


> 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
>>> 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
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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
>> 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: 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
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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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>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
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>>>
>>> -----
>>> 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
>>
>>
>>
>> ------------------------------
>>
>> ______________________________________________________________
>> 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
>>
>> End of Boatanchors Digest, Vol 88, Issue 10
>> *******************************************
>