From lawriejk at gmail.com  Tue Jan  2 18:59:03 2018
From: lawriejk at gmail.com (James Lawrie)
Date: Tue, 2 Jan 2018 17:59:03 -0600
Subject: [HBR] Help needed for Information on a transceiver.
Message-ID: <9E88E59D-5D61-4F22-B22F-3B021015A148@gmail.com>

Hello,

I am at a loss trying to find documentation, schematics, etc on a couple of boat anchors I bought with the hope of converting over to HF. The information is:

Bludworth Marine Model BRT-1025

Front also states: Bludworth Marine division of National-Simplex-Bludworth, Inc


I?ve searched everywhere I could think of and all I ever find is old sailing ads from the 50s. I would really like documentation before I start parting out for the parts.

If anyone has info please let me know I?ll pay for it if needed.

Thanks,

James Lawrie

From jmax at ix.netcom.com  Tue Jan  2 21:46:48 2018
From: jmax at ix.netcom.com (Jim Cain)
Date: Tue, 2 Jan 2018 18:46:48 -0800
Subject: [HBR] Help needed for Information on a transceiver.
In-Reply-To: <9E88E59D-5D61-4F22-B22F-3B021015A148@gmail.com>
References: <9E88E59D-5D61-4F22-B22F-3B021015A148@gmail.com>
Message-ID: <B656DB601E034352B657B75E1CE8C75B@LenovoPC>

After doing a little research I came across an item at Surplus Sales of
Nebraska (www.surplussales.com). They are selling the Bludworth Marine
BRT-1025-6 and 12 new in the box. Perhaps you could inquire if the item
includes any documentation and would they be willing to give/sell it to you.
The radios themselves are listed for $225.00.
Jim
 

-----Original Message-----
From: hbr-bounces at mailman.qth.net [mailto:hbr-bounces at mailman.qth.net] On
Behalf Of James Lawrie
Sent: Tuesday, January 2, 2018 3:59 PM
To: HBR at mailman.qth.net
Subject: [HBR] Help needed for Information on a transceiver.

Hello,

I am at a loss trying to find documentation, schematics, etc on a couple of
boat anchors I bought with the hope of converting over to HF. The
information is:

Bludworth Marine Model BRT-1025

Front also states: Bludworth Marine division of National-Simplex-Bludworth,
Inc


I've searched everywhere I could think of and all I ever find is old sailing
ads from the 50s. I would really like documentation before I start parting
out for the parts.

If anyone has info please let me know I'll pay for it if needed.

Thanks,

James Lawrie
______________________________________________________________
HBR mailing list
Home: http://mailman.qth.net/mailman/listinfo/hbr
Help: http://mailman.qth.net/mmfaq.htm
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This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html


From lawriejk at gmail.com  Tue Jan  2 22:34:46 2018
From: lawriejk at gmail.com (lawriejk)
Date: Tue, 02 Jan 2018 21:34:46 -0600
Subject: [HBR] Help needed for Information on a transceiver.
Message-ID: <5a4c4f58.6d249d0a.a08ad.0655@mx.google.com>

Hello,
Thanks, but that's were I got mine from but they have no manuals or info. They are new even come with new Mic, carbon maybe??
These are new, only thing wrong with mine was broken coil mounting plastic from age. I was just going to gut for parts but they were well made, wire tied just like mil spec.
Maybe someone else has info I'm running out of options for finding information, wonder if FCC back then had documents.

Thanks,
Jim


Sent from my Galaxy Tab A
-------- Original message --------From: Jim Cain <jmax at ix.netcom.com> Date: 1/2/18  20:46  (GMT-06:00) To: 'HBR Receiver List' <hbr at mailman.qth.net> Subject: Re: [HBR] Help needed for Information on a transceiver. 
After doing a little research I came across an item at Surplus Sales of
Nebraska (www.surplussales.com). They are selling the Bludworth Marine
BRT-1025-6 and 12 new in the box. Perhaps you could inquire if the item
includes any documentation and would they be willing to give/sell it to you.
The radios themselves are listed for $225.00.
Jim
 

-----Original Message-----
From: hbr-bounces at mailman.qth.net [mailto:hbr-bounces at mailman.qth.net] On
Behalf Of James Lawrie
Sent: Tuesday, January 2, 2018 3:59 PM
To: HBR at mailman.qth.net
Subject: [HBR] Help needed for Information on a transceiver.

Hello,

I am at a loss trying to find documentation, schematics, etc on a couple of
boat anchors I bought with the hope of converting over to HF. The
information is:

Bludworth Marine Model BRT-1025

Front also states: Bludworth Marine division of National-Simplex-Bludworth,
Inc


I've searched everywhere I could think of and all I ever find is old sailing
ads from the 50s. I would really like documentation before I start parting
out for the parts.

If anyone has info please let me know I'll pay for it if needed.

Thanks,

James Lawrie
______________________________________________________________
HBR mailing list
Home: http://mailman.qth.net/mailman/listinfo/hbr
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:HBR at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
HBR mailing list
Home: http://mailman.qth.net/mailman/listinfo/hbr
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:HBR at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

From radio at daileyservices.com  Wed Jan  3 00:06:38 2018
From: radio at daileyservices.com (Vintage Radio Repair)
Date: Tue, 2 Jan 2018 22:06:38 -0700
Subject: [HBR] Help needed for Information on a transceiver.
Message-ID: <000001d38450$a48472b0$ed8d5810$@daileyservices.com>

http://www.vesselrepair.com/

Bludsworth Marine is a vessel salvage and repair facility - is the radio VHF?  Early marine radio gear operated from about 2 mcs, up to about 6 mcs, but later gear now operates in the 152 mHz area.

Tom - W?EAJ 


From lawriejk at gmail.com  Wed Jan  3 18:29:37 2018
From: lawriejk at gmail.com (James Lawrie)
Date: Wed, 3 Jan 2018 17:29:37 -0600
Subject: [HBR] Help needed for Information on a transceiver.
In-Reply-To: <000001d38450$a48472b0$ed8d5810$@daileyservices.com>
References: <000001d38450$a48472b0$ed8d5810$@daileyservices.com>
Message-ID: <6881F131-345F-447B-96F7-6D297C1B6989@gmail.com>

Hello,

Yes they seem to be now located in both Houston and Galveston. No I?m guessing made somewhere in early mid 50s and it?s low band AM 4 large Bakelite type crystals are in the 2-3 MHz region from what I can tell. It uses two 6L6Gs in the final so guessing maybe 20 or so watt.

I plan to switch over to probably 160-40 Meter, and trying to make one SSB/CW. Counting the case and parts well worth the money. I?ve ordered a 6.3v 5 amp Filament transformer so I can pull the 6v vibrator and try to run from A/C, but I?m back to needing schematic or service manual.

Thanks,

James Lawrie

> On Jan 2, 2018, at 23:06, Vintage Radio Repair <radio at daileyservices.com> wrote:
> 
> http://www.vesselrepair.com/
> 
> Bludsworth Marine is a vessel salvage and repair facility - is the radio VHF?  Early marine radio gear operated from about 2 mcs, up to about 6 mcs, but later gear now operates in the 152 mHz area.
> 
> Tom - W?EAJ 
> 
> ______________________________________________________________
> HBR mailing list
> Home: http://mailman.qth.net/mailman/listinfo/hbr
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:HBR at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

From xjakobx at gmail.com  Wed Jan  3 20:08:56 2018
From: xjakobx at gmail.com (Xnke)
Date: Wed, 3 Jan 2018 19:08:56 -0600
Subject: [HBR] Help needed for Information on a transceiver.
In-Reply-To: <CAE9znTvMdTuCJd5rmhR+Q0+-PE6YKH5oww07-pfgXyG5k882fw@mail.gmail.com>
References: <000001d38450$a48472b0$ed8d5810$@daileyservices.com>
	<6881F131-345F-447B-96F7-6D297C1B6989@gmail.com>
	<CAE9znTvMdTuCJd5rmhR+Q0+-PE6YKH5oww07-pfgXyG5k882fw@mail.gmail.com>
Message-ID: <CAE9znTt6Koyvommp4SHZhTjM45n7e2qsD+_3nRqWufTH+odWAg@mail.gmail.com>

Fire it up on 6v, verify receive works, key into a dummy load, and measure
voltages at what you consider key points in the circuit. I would measure
the following:

B+ at filter output
Grid bias at all grids
Cathode voltage
Final cathode voltage under 55ma load
Final plate voltage at 55ma load

And then swap your filament transformer and see what you need to do to get
those voltages back. If you can get within 5%, you're as close as makes no
difference and can call it a job well done!

After that, I would start measuring IF frequency response, and get a stable
BFO going. At that point CW/SSB reception should be possible. Next step is
getting the final amp biased into class AB with a front panel switch. From
there, an SSB generator could be outboarded for testing.

Just like eating an elephant.

KI4YAN, Jake

On Jan 3, 2018 5:29 PM, "James Lawrie" <lawriejk at gmail.com> wrote:

Hello,

Yes they seem to be now located in both Houston and Galveston. No I?m
guessing made somewhere in early mid 50s and it?s low band AM 4 large
Bakelite type crystals are in the 2-3 MHz region from what I can tell. It
uses two 6L6Gs in the final so guessing maybe 20 or so watt.

I plan to switch over to probably 160-40 Meter, and trying to make one
SSB/CW. Counting the case and parts well worth the money. I?ve ordered a
6.3v 5 amp Filament transformer so I can pull the 6v vibrator and try to
run from A/C, but I?m back to needing schematic or service manual.

Thanks,

James Lawrie

> On Jan 2, 2018, at 23:06, Vintage Radio Repair <radio at daileyservices.com>
wrote:
>
> http://www.vesselrepair.com/
>
> Bludsworth Marine is a vessel salvage and repair facility - is the radio
VHF?  Early marine radio gear operated from about 2 mcs, up to about 6 mcs,
but later gear now operates in the 152 mHz area.
>
> Tom - W?EAJ
>
> ______________________________________________________________
> HBR mailing list
> Home: http://mailman.qth.net/mailman/listinfo/hbr
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:HBR at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
______________________________________________________________
HBR mailing list
Home: http://mailman.qth.net/mailman/listinfo/hbr
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:HBR at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

From ka9p at aol.com  Fri Jan 26 00:10:08 2018
From: ka9p at aol.com (Scott McDonald)
Date: Thu, 25 Jan 2018 23:10:08 -0600
Subject: [HBR] BC453 IF transformers in HBR11
Message-ID: <F7733658-7CE6-495A-9874-765EA1E6596F@aol.com>

As luck would have it, a friend was nice enough to provide some 85 khz IF transformers so I can start building an HBR11.

I?ve read a couple of good references about testing and using these transformers but am not sure whether

 1) I need to use the BC453 input transformer for the first IF transformer, or whether I can used one of the tapped second or third BC453 transformers as the first IF transformer; and 

2) there is any difference between the second and third BC453 transformers that is material to their use in an HBR.

Questions arise because I have what appears to be one good 1st IF transformer and three good third IF transformers.

Any thoughts very much appreciated.

73 Scott ka9p



Sent from my iPad

From radio at daileyservices.com  Fri Jan 26 10:54:58 2018
From: radio at daileyservices.com (Vintage Radio Repair)
Date: Fri, 26 Jan 2018 08:54:58 -0700
Subject: [HBR] BC453 IF transformers in HBR11
In-Reply-To: <F7733658-7CE6-495A-9874-765EA1E6596F@aol.com>
References: <F7733658-7CE6-495A-9874-765EA1E6596F@aol.com>
Message-ID: <005001d396be$04cc8020$0e658060$@daileyservices.com>

Hey Scott - wanna buy a "readymade" HBR-11... replete with 80, 40, & 20m coilsets, all the HBR notes, original QST articles, Millen xfmr data sheet, and a few others?  Oh, and the coils & spares are in the ORIGINAL Allied radio box that they CAME IN, back in 1964.  (mine has the National CAN dial)

Tom Dailey - W?EAJ - 720/839-8014  (Sedalia, CO 


From smithab11 at comcast.net  Fri Jan 26 10:56:05 2018
From: smithab11 at comcast.net (B. Smith)
Date: Fri, 26 Jan 2018 10:56:05 -0500
Subject: [HBR] BC453 IF transformers in HBR11
In-Reply-To: <F7733658-7CE6-495A-9874-765EA1E6596F@aol.com>
References: <F7733658-7CE6-495A-9874-765EA1E6596F@aol.com>
Message-ID: <9b54b6d9-2f2a-b019-2e63-d440a16d031f@comcast.net>

 ? I've made some note on those coils , see:
http://k4che.com/HBR/HBR%20page%201.htm
k4che



On 1/26/2018 12:10 AM, Scott McDonald via HBR wrote:
> As luck would have it, a friend was nice enough to provide some 85 khz IF transformers so I can start building an HBR11.
>
> I?ve read a couple of good references about testing and using these transformers but am not sure whether
>
>   1) I need to use the BC453 input transformer for the first IF transformer, or whether I can used one of the tapped second or third BC453 transformers as the first IF transformer; and
>
> 2) there is any difference between the second and third BC453 transformers that is material to their use in an HBR.
>
> Questions arise because I have what appears to be one good 1st IF transformer and three good third IF transformers.
>
> Any thoughts very much appreciated.
>
> 73 Scott ka9p
>
>
>
> Sent from my iPad
> ______________________________________________________________
> HBR mailing list
> Home: http://mailman.qth.net/mailman/listinfo/hbr
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:HBR at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html



From bobby at MCKAHANS.COM  Fri Jan 26 11:18:33 2018
From: bobby at MCKAHANS.COM (bobby at MCKAHANS.COM)
Date: Fri, 26 Jan 2018 09:18:33 -0700
Subject: [HBR] BC453 IF transformers in HBR11
Message-ID: <20180126091833.b676a59a4426180764c352ad8c424592.db47a9fda1.wbe@email02.godaddy.com>


From ka9p at aol.com  Fri Jan 26 12:10:11 2018
From: ka9p at aol.com (ka9p at aol.com)
Date: Fri, 26 Jan 2018 12:10:11 -0500
Subject: [HBR] BC453 IF transformers in HBR11
In-Reply-To: <9b54b6d9-2f2a-b019-2e63-d440a16d031f@comcast.net>
Message-ID: <1613372b455-171d-aa88d@webjas-vaa121.srv.aolmail.net>


..and those notes were really helpful last night as I was sorting stuff out and testing the transformers.  Really good stuff.
 
But what I'm stuck on is whether I should use the tapped or untapped style.  Looking at the schematic, I see TC seemed to use the same Millen coils in all three positions, and I'm inclined to use the three matching 3d IF transformers that check out OK per the tests on the website.  
 
But if there was magic in using the BC453 1st IF in the first IF I would do it, I just don't see any comment about whether there is anything critical about which of the 453 transformers can be used where..and I'm not bright enough to ferret that out :)

Thanks again, that website was great, especially the BFO part (next problem to solve....)

73 Scott
 
 



From smithab11 at comcast.net  Fri Jan 26 13:04:30 2018
From: smithab11 at comcast.net (B. Smith)
Date: Fri, 26 Jan 2018 13:04:30 -0500
Subject: [HBR] BC453 IF transformers in HBR11
In-Reply-To: <1613372b455-171d-aa88d@webjas-vaa121.srv.aolmail.net>
References: <1613372b455-171d-aa88d@webjas-vaa121.srv.aolmail.net>
Message-ID: <7d5ef98c-3a51-799c-de04-c0c81eb96c58@comcast.net>

I would install? the coils so that you can plug them in or use the 
miniature bandana pins this way you can experiment. I would just use the 
coils as is and ignore the center taps.
Have fun, its a great project.
breck

On 1/26/2018 12:10 PM, Scott via HBR wrote:
> ..and those notes were really helpful last night as I was sorting stuff out and testing the transformers.  Really good stuff.
>   
> But what I'm stuck on is whether I should use the tapped or untapped style.  Looking at the schematic, I see TC seemed to use the same Millen coils in all three positions, and I'm inclined to use the three matching 3d IF transformers that check out OK per the tests on the website.
>   
> But if there was magic in using the BC453 1st IF in the first IF I would do it, I just don't see any comment about whether there is anything critical about which of the 453 transformers can be used where..and I'm not bright enough to ferret that out :)
>
> Thanks again, that website was great, especially the BFO part (next problem to solve....)
>
> 73 Scott
>   
>   
>
>
> ______________________________________________________________
> HBR mailing list
> Home: http://mailman.qth.net/mailman/listinfo/hbr
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:HBR at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>


From ka9p at aol.com  Fri Jan 26 13:45:54 2018
From: ka9p at aol.com (Scott McDonald)
Date: Fri, 26 Jan 2018 12:45:54 -0600
Subject: [HBR] BC453 IF transformers in HBR11
In-Reply-To: <7d5ef98c-3a51-799c-de04-c0c81eb96c58@comcast.net>
References: <1613372b455-171d-aa88d@webjas-vaa121.srv.aolmail.net>
	<7d5ef98c-3a51-799c-de04-c0c81eb96c58@comcast.net>
Message-ID: <3B529DB6-EB1B-4B50-A12E-1C1F97B1DC5E@aol.com>

Thanks Breck, makes sense.  I?ve got an old chassis with the sockets, I may build the IF strip on that an experiment there. Your website is super useful to me, thanks for making it!

Sent from my iPad

> On Jan 26, 2018, at 12:04 PM, B. Smith <smithab11 at comcast.net> wrote:
> 
> I would install  the coils so that you can plug them in or use the miniature bandana pins this way you can experiment. I would just use the coils as is and ignore the center taps.
> Have fun, its a great project.
> breck
> 
>> On 1/26/2018 12:10 PM, Scott via HBR wrote:
>> ..and those notes were really helpful last night as I was sorting stuff out and testing the transformers.  Really good stuff.
>>  But what I'm stuck on is whether I should use the tapped or untapped style.  Looking at the schematic, I see TC seemed to use the same Millen coils in all three positions, and I'm inclined to use the three matching 3d IF transformers that check out OK per the tests on the website.
>>  But if there was magic in using the BC453 1st IF in the first IF I would do it, I just don't see any comment about whether there is anything critical about which of the 453 transformers can be used where..and I'm not bright enough to ferret that out :)
>> 
>> Thanks again, that website was great, especially the BFO part (next problem to solve....)
>> 
>> 73 Scott
>>    
>> 
>> ______________________________________________________________
>> HBR mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/hbr
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:HBR at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> 
> 
> ______________________________________________________________
> HBR mailing list
> Home: http://mailman.qth.net/mailman/listinfo/hbr
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:HBR at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html


From whitebear1122 at comcast.net  Fri Jan 26 15:49:16 2018
From: whitebear1122 at comcast.net (Whitebear1122)
Date: Fri, 26 Jan 2018 14:49:16 -0600
Subject: [HBR] BC453 IF transformers in HBR11
In-Reply-To: <1613372b455-171d-aa88d@webjas-vaa121.srv.aolmail.net>
References: <1613372b455-171d-aa88d@webjas-vaa121.srv.aolmail.net>
Message-ID: <57E95713-E39C-4099-89AB-D5F96BFA01BB@comcast.net>

Just my 2 cents.  I?ve resumed working on my HBR-13.. I know, it?s taking a long time.  I got held up with the IF?s as well.  After some trial and error I decided to move the center frequency from 85 KC to 100 KC.  I unsoldered the fixed caps in the can, replaced them with 120 PF silver mica?s, and they are now right around 100 KC.  I?ve converted 2 out of the 4 so far.  The first two are the input IF configurations.  The second stage will use the tapped 2nd IF, and the third stage will use the tapped 3rd IF.  

I have the RF front end and first two 1600 KC stages wired.  Starting on the 100 KC stages now, so I have not tested this out yet.  

I?m thinking that there will be plenty of gain with those regenerative IF stages that the tapped IF?s will be find.  If not, then I?ll change them out.

73, Scott WA9WFA



