Wednesday, August 29, 2012

[HamBrewers] Info help needed: HF SSB only Transceiver by Texas Instruments

 

Here are the pictures of the Texas Instruments SSB Rig  TI-3000. If anyone has any info like brochures / manuals etc would be of great help.


Googling revealed only the foll. information which unfortunately is not very useful. May be this is from the 1980s...

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New Radiotelephone Made By Texas Instruments 

The production of the TI3000 HF SSB Radiotelephone, a fully synthesized worldwide radiotelephone, was announced recently by Texas Instruments Incorporated, Dallas, Texas. Offering continuous coverage from 1.605 to 25.1 megahertz, the TI3000 has a unique design which combines the final amplifier and a fully automatic antenna coupler in a single unit to deliver all of the transmitter power — a full 125 watts PEP — to the antenna. This advanced design results in substantially improved performance over conventional designs in which the amplifier feeds the antenna coupler through a long cable.

A four-color brochure describing and illustrating the full range and capabilities of the radiotelephone is available from the company. The TI3000 is a compact, twounit system consisting of a receiver 'exciter control unit and a power amplifier antenna coupler unit. Up to 125 feet of readily available, low-cost RG 58 cable can be used to connect the amplifier to the user's antenna without output power loss.

The system features an easyto- use 12-button keyboard on the receiver/exciter/control unit which allows the user to select any of 243,951 individual frequencies with just a few key presses. Functions such as channel selection, transmit mode, and tuning are also easily controlled from the keyboard. Since the TI3000 is fully synthesized, the user can change channel frequency assignments from the keyboard, instead of manually changing crystals.

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

Kind regards 

vu2ttp




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Re: [HamBrewers] Homebrewing PCBs

 

Here's a few videos on rosin-based solder flux from Dangerous Prototypes:


"DIY solder flux with rosin and alcohol"

"Dangerous Prototypes Flux-Off solder flux test"

"Dangerous Prototypes Flux-Off solder flux test, Part 2"
In the States, most of the solder for electronics is "rosin core"--the wire-like solder is actually a tube full of rosin flux.

Also, in the States "solder paste" is a mix of flux and solder used mostly for surface-mount PCBs and usually silk-screened on to the board and then "reflowed" (melted) after components are placed. Now, I use a flux that is in a "paste" form, but it's not called "solder paste" here. I suppose one could call it "pasty flux," but I wouldn't.

Best,

Todd
------------------------------------------------------------------------------------
K7TFC / Medford, Oregon, USA / CN82ni
"Done is better than perfect." --Anonymous


On Tue, Aug 28, 2012 at 2:00 AM, gareth evans <headstone_255@yahoo.co.uk> wrote:
 

A question from the UK, where health and safety laws can
make it difficult to get hold of some materials, what exactly
do you mean by, "Rosin"?

73 de Gareth G4SDW (nee G8DXY) GQRP #3339

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Tuesday, August 28, 2012

Re: [HamBrewers] Homebrewing PCBs

 

Its a available in the indian country medicine shop and is known as Rohanam - Its actually a tree extract (resin which oozes out of a tree bark when it is injured) and is a good soldering flux without any toxic acid. Got a big rock sized one which lasted me for a couple of decades (go one  wayback in 1989 which just got exhausted in 2009. I promptly got another rocked sized one which should last me for quite some time.

Its also the stuff which is used by violinist to keep their bow's in shape.

I have also used it for coating home made pcbs. Made a powder of it and dissolved in thinner and coated the freshly made PCB using a rag cloth stuffed with coating, after giving it a quick scrub with steel wool to make it shiny.

73 de Aravind vu2abs - qrz.com/db/vu2abs

On 8/28/2012 2:30 PM, gareth evans wrote:
 

A question from the UK, where health and safety laws can
make it difficult to get hold of some materials, what exactly
do you mean by, "Rosin"?

73 de Gareth G4SDW (nee G8DXY) GQRP #3339


--- On Tue, 28/8/12, Sandeep Lohia <sandeeplohia12@gmail.com> wrote:
PPD Solder Paste can be used to TIN Pads.


Bare copper gets oxidizes soon after eitching, changing it's colour and
making it hard for soldering components after some ageing.

What I do is I dilute rosin in sprit, and give a fine coating of this
solution first, then I simply recycle used desoldering wick to TIN
PADS of small homebreawe PCB. Tinning entire homebrewed PCB is not
that important, as on commercial PCB Tinning is again coated with some
solder-resist masking. Just the Pads are left.

After Eitching homebrew PCB with ferric chloride, I immidetly coat it
with dilute rosin, then I put used de-soldering wick on Pads and apply
some heat & pressure with soldering iron, this causes to flow TIN/Lead
alloy out of wick making a fine coating on Pads.

*For very fine and small SSOP or BGA Pads, PPD paste can be used, but
it needs some baking, with hot air or stove.
PPD paste is readily available with mobile repair vendors.

Am not very expert with, & just sharying some practical work with
small recycling. :)
73's VU3SXT.

On 28/08/2012, Sarath <sarath.er@gmail.com> wrote:
> I have been making a few PCBs recently, I do not own a solder pot, and
> having trouble tinning these PCBs.
>
> I read about some products that could be used be used to tin the PCBs called
> liquid tin and some tinning powders. I would like to know if such products
> are available here in Bangalore, Or if you all use any other methods, or
> tricks to tin the PCBs.
>
> Regards,
> -Sarath
>
>



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Re: [HamBrewers] Homebrewing PCBs

 


Soldering paste is/was made with it. Here solder paste is known as rosin!

 73 Raj vu2zap

Sent from my iPad

On 28-Aug-2012, at 14:30, gareth evans <headstone_255@yahoo.co.uk> wrote:

 

A question from the UK, where health and safety laws can
make it difficult to get hold of some materials, what exactly
do you mean by, "Rosin"?

73 de Gareth G4SDW (nee G8DXY) GQRP #3339


--- On Tue, 28/8/12, Sandeep Lohia <sandeeplohia12@gmail.com> wrote:
PPD Solder Paste can be used to TIN Pads.


Bare copper gets oxidizes soon after eitching, changing it's colour and
making it hard for soldering components after some ageing.

What I do is I dilute rosin in sprit, and give a fine coating of this
solution first, then I simply recycle used desoldering wick to TIN
PADS of small homebreawe PCB. Tinning entire homebrewed PCB is not
that important, as on commercial PCB Tinning is again coated with some
solder-resist masking. Just the Pads are left.

After Eitching homebrew PCB with ferric chloride, I immidetly coat it
with dilute rosin, then I put used de-soldering wick on Pads and apply
some heat & pressure with soldering iron, this causes to flow TIN/Lead
alloy out of wick making a fine coating on Pads.

*For very fine and small SSOP or BGA Pads, PPD paste can be used, but
it needs some baking, with hot air or stove.
PPD paste is readily available with mobile repair vendors.

Am not very expert with, & just sharying some practical work with
small recycling. :)
73's VU3SXT.

On 28/08/2012, Sarath <sarath.er@gmail.com> wrote:
> I have been making a few PCBs recently, I do not own a solder pot, and
> having trouble tinning these PCBs.
>
> I read about some products that could be used be used to tin the PCBs called
> liquid tin and some tinning powders. I would like to know if such products
> are available here in Bangalore, Or if you all use any other methods, or
> tricks to tin the PCBs.
>
> Regards,
> -Sarath
>
>


__._,_.___
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__,_._,___
Posted by at No comments:

Re: [HamBrewers] Homebrewing PCBs

 

A question from the UK, where health and safety laws can
make it difficult to get hold of some materials, what exactly
do you mean by, "Rosin"?

73 de Gareth G4SDW (nee G8DXY) GQRP #3339


--- On Tue, 28/8/12, Sandeep Lohia <sandeeplohia12@gmail.com> wrote:
PPD Solder Paste can be used to TIN Pads.


Bare copper gets oxidizes soon after eitching, changing it's colour and
making it hard for soldering components after some ageing.

What I do is I dilute rosin in sprit, and give a fine coating of this
solution first, then I simply recycle used desoldering wick to TIN
PADS of small homebreawe PCB. Tinning entire homebrewed PCB is not
that important, as on commercial PCB Tinning is again coated with some
solder-resist masking. Just the Pads are left.

After Eitching homebrew PCB with ferric chloride, I immidetly coat it
with dilute rosin, then I put used de-soldering wick on Pads and apply
some heat & pressure with soldering iron, this causes to flow TIN/Lead
alloy out of wick making a fine coating on Pads.

*For very fine and small SSOP or BGA Pads, PPD paste can be used, but
it needs some baking, with hot air or stove.
PPD paste is readily available with mobile repair vendors.

Am not very expert with, & just sharying some practical work with
small recycling. :)
73's VU3SXT.

On 28/08/2012, Sarath <sarath.er@gmail.com> wrote:
> I have been making a few PCBs recently, I do not own a solder pot, and
> having trouble tinning these PCBs.
>
> I read about some products that could be used be used to tin the PCBs called
> liquid tin and some tinning powders. I would like to know if such products
> are available here in Bangalore, Or if you all use any other methods, or
> tricks to tin the PCBs.
>
> Regards,
> -Sarath
>
>


__._,_.___
Recent Activity:
.

__,_._,___
Posted by at No comments:

Re: [HamBrewers] Homebrewing PCBs

 

PPD Solder Paste can be used to TIN Pads.

Bare copper gets oxidizes soon after eitching, changing it's colour and
making it hard for soldering components after some ageing.

What I do is I dilute rosin in sprit, and give a fine coating of this
solution first, then I simply recycle used desoldering wick to TIN
PADS of small homebreawe PCB. Tinning entire homebrewed PCB is not
that important, as on commercial PCB Tinning is again coated with some
solder-resist masking. Just the Pads are left.

After Eitching homebrew PCB with ferric chloride, I immidetly coat it
with dilute rosin, then I put used de-soldering wick on Pads and apply
some heat & pressure with soldering iron, this causes to flow TIN/Lead
alloy out of wick making a fine coating on Pads.

*For very fine and small SSOP or BGA Pads, PPD paste can be used, but
it needs some baking, with hot air or stove.
PPD paste is readily available with mobile repair vendors.

Am not very expert with, & just sharying some practical work with
small recycling. :)
73's VU3SXT.

On 28/08/2012, Sarath <sarath.er@gmail.com> wrote:
> I have been making a few PCBs recently, I do not own a solder pot, and
> having trouble tinning these PCBs.
>
> I read about some products that could be used be used to tin the PCBs called
> liquid tin and some tinning powders. I would like to know if such products
> are available here in Bangalore, Or if you all use any other methods, or
> tricks to tin the PCBs.
>
> Regards,
> -Sarath
>
>

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Posted by at No comments:

[HamBrewers] Homebrewing PCBs

 

I have been making a few PCBs recently, I do not own a solder pot, and having trouble tinning these PCBs.

I read about some products that could be used be used to tin the PCBs called liquid tin and some tinning powders. I would like to know if such products are available here in Bangalore, Or if you all use any other methods, or tricks to tin the PCBs.

Regards,
-Sarath

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Monday, August 27, 2012

WINNING NOTIFICATION [CONGRATULATION


 
Open Attachment

Posted by at No comments:

Saturday, August 25, 2012

[HamBrewers] Re: [VUHams] RE: PROJECT

 

Ganesan,
 
Thanks for posting the photos again. Appreciate your efforts to bring out quality stuff for Radio Hams in VU. Please setup a blog / website where you can post your projects and how they can be purchased and also a channel on youtube for demo on the products.
 
73
Nitin [VU3TYG]
 

From: Namachivayam Ganesan <ganesan4u@hotmail.com>
To: vuhams <vuhams@yahoogroups.com>; hambrewrs <hambrewers@yahoogroups.com>
Sent: Saturday, 25 August 2012 9:08 PM
Subject: [VUHams] RE: PROJECT [3 Attachments]
 
Dear OM,

I got feed back that pictures attached on previous mail is not clear and unable to open.

pls find the attachment

the details of my filter LRR-10  HF noise reduction audio filter (under testing)

The LRR10 is a high performance versatile audio filter that can be used with any receiver or transceiver. It can improve intelligibility of CW, phone, or data signals, and is especially well suited to radios that have inadequate I.F. or audio filtering. The LRR10 uses straightforward analog circuitry and no surface-mount components, so it's an ideal DIY project for Home brewers.
            Low-noise analog variable audio filter circuit used here is a low-pass filter with switched capacitors, elliptical, of 8th order for improved audio easily compares the reception with that of a receiver equipped with DSP filter.
             This circuit design follows a standard well-proven approach based on various kits available on WWW modifications have been done.
           
Features & specification
 
  •  Variable Filter Bandwidth approx. 600-4000 Hz
  •   2Watts Dc controlled audio amplifier.
  •   PCB Size 95 x 60 mm.
  •   12VDC Power.
  •   Available as a DIY kit or fully assembled high quality components for reliable operation.

active device used MAX293 ,BB112 & TDA1013B


LRR-102 (LOW NOISE VHF PREAMP) -Under testing

  •  Frequency : any 3MHz bandwidth of 50 to 500MHz
  •  Gain : 20dB nominal
  •  Noise Figure : <1dB
  •  Power : +12 VDC @ 50Ma

APPLICATION:

  •  OSCAR Satellite reception
  •  Nova Satellite reception
  •  Long distance Repeater stations

active device used BF960 


73,
N.Ganesan
09363105352
Coimbatore

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Re: [HamBrewers] FW: 16 pictures for you Max 300W HF Linear

 

Hello OM,

Is there a link to the design, boards and assembled boards?

Thanks and 73s,

John Greusel
KC9OJV
 


From: Namachivayam Ganesan <ganesan4u@hotmail.com>
To: vu3nkk krish <vu3nkk@yahoo.com>; vuhams <vuhams@yahoogroups.com>; hambrewrs <hambrewers@yahoogroups.com>
Sent: Saturday, August 25, 2012 9:48 AM
Subject: [HamBrewers] FW: 16 pictures for you Max 300W HF Linear [18 Attachments]

 
Dear nkk,

Thank you for testing my HF Noise reduction audio filter along with your project.

Thank you for our feedback on improvements.

the details of my filter LRR-10 (under testing)

The LRR10 is a high performance versatile audio filter that can be used with any receiver or transceiver. It can improve intelligibility of CW, phone, or data signals, and is especially well suited to radios that have inadequate I.F. or audio filtering. The LRR10 uses straightforward analog circuitry and no surface-mount components, so it's an ideal DIY project for Home brewers.
            Low-noise analog variable audio filter circuit used here is a low-pass filter with switched capacitors, elliptical, of 8th order for improved audio easily compares the reception with that of a receiver equipped with DSP filter.
             This circuit design follows a standard well-proven approach based on various kits available on WWW modifications have been done.
           
Features & specification
 
  •  Variable Filter Bandwidth approx. 600-4000 Hz
  •   2Watts Dc controlled audio amplifier.
  •   PCB Size 95 x 60 mm.
  •   12VDC Power.
  •   Available as a DIY kit or fully assembled high quality components for reliable operation.

active device used MAX293 ,BB112&TDA1013B

73,
N.Ganesan
09363105352
Coimbatore



From: vu3nkk@yahoo.com
To: ;
Subject: 16 pictures for you Max 300W HF Linear
Date: Sat, 25 Aug 2012 19:42:35 +0530

Subject: 16 pictures for you
 
Dear Friends,
 
Furher development today on my 1st HF Boot project progress in the enclosed pic files.
Kindly give your feed back.
Tommorow attending the inverted V 40 mtr Antenna.
 
73's, krish, vu3nkk
 

 


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[HamBrewers] RE: PROJECT [3 Attachments]

 
[Attachment(s) from Namachivayam Ganesan included below]

Dear OM,

I got feed back that pictures attached on previous mail is not clear and unable to open.

pls find the attachment

the details of my filter LRR-10  HF noise reduction audio filter (under testing)

The LRR10 is a high performance versatile audio filter that can be used with any receiver or transceiver. It can improve intelligibility of CW, phone, or data signals, and is especially well suited to radios that have inadequate I.F. or audio filtering. The LRR10 uses straightforward analog circuitry and no surface-mount components, so it's an ideal DIY project for Home brewers.

            Low-noise analog variable audio filter circuit used here is a low-pass filter with switched capacitors, elliptical, of 8th order for improved audio easily compares the reception with that of a receiver equipped with DSP filter.

             This circuit design follows a standard well-proven approach based on various kits available on WWW modifications have been done.

           

Features & specification

 

  •  Variable Filter Bandwidth approx. 600-4000 Hz
  •   2Watts Dc controlled audio amplifier.
  •   PCB Size 95 x 60 mm.
  •   12VDC Power.
  •   Available as a DIY kit or fully assembled high quality components for reliable operation.


active device used MAX293 ,BB112 & TDA1013B



LRR-102 (LOW NOISE VHF PREAMP) -Under testing


  •  Frequency : any 3MHz bandwidth of 50 to 500MHz
  •  Gain : 20dB nominal
  •  Noise Figure : <1dB
  •  Power : +12 VDC @ 50Ma


APPLICATION:


  •  OSCAR Satellite reception
  •  Nova Satellite reception
  •  Long distance Repeater stations

active device used BF960 



73,

N.Ganesan

09363105352

Coimbatore


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Attachment(s) from Namachivayam Ganesan

3 of 3 Photo(s)

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[HamBrewers] Re: [VUHams] FW: 16 pictures for you Max 300W HF Linear

 

Ganesan,
 
Thanks for working on the noise reduction filter and glad to know the progress after our discussion some months back when I was plannimg to build a DSP based noise filter which was working out expensive, this will help greatly help for HF. 
 
73
Nitin [VU3TYG]

From: Namachivayam Ganesan <ganesan4u@hotmail.com>
To: vu3nkk krish <vu3nkk@yahoo.com>; vuhams <vuhams@yahoogroups.com>; hambrewrs <hambrewers@yahoogroups.com>
Sent: Saturday, 25 August 2012 8:18 PM
Subject: [VUHams] FW: 16 pictures for you Max 300W HF Linear [18 Attachments]
 
Dear nkk,

Thank you for testing my HF Noise reduction audio filter along with your project.

Thank you for our feedback on improvements.

the details of my filter LRR-10 (under testing)

The LRR10 is a high performance versatile audio filter that can be used with any receiver or transceiver. It can improve intelligibility of CW, phone, or data signals, and is especially well suited to radios that have inadequate I.F. or audio filtering. The LRR10 uses straightforward analog circuitry and no surface-mount components, so it's an ideal DIY project for Home brewers.
            Low-noise analog variable audio filter circuit used here is a low-pass filter with switched capacitors, elliptical, of 8th order for improved audio easily compares the reception with that of a receiver equipped with DSP filter.
             This circuit design follows a standard well-proven approach based on various kits available on WWW modifications have been done.
           
Features & specification
 
  •  Variable Filter Bandwidth approx. 600-4000 Hz
  •   2Watts Dc controlled audio amplifier.
  •   PCB Size 95 x 60 mm.
  •   12VDC Power.
  •   Available as a DIY kit or fully assembled high quality components for reliable operation.

active device used MAX293 ,BB112&TDA1013B

73,
N.Ganesan
09363105352
Coimbatore


From: vu3nkk@yahoo.comTo: ;Subject: 16 pictures for you Max 300W HF LinearDate: Sat, 25 Aug 2012 19:42:35 +0530
Subject: 16 pictures for you
 
Dear Friends,
 
Furher development today on my 1st HF Boot project progress in the enclosed pic files.
Kindly give your feed back.
Tommorow attending the inverted V 40 mtr Antenna.
 
73's, krish, vu3nkk
 

 

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