Wednesday, February 23, 2011

RE: [HamBrewers] Re: 2M VHF

 

Dear Prabakar, That one chip has eluded me. Can you please share the details of your mod?

 

73's

 

Rajesh K

KC2KBY/VU3RGK

 

-----Original Message-----
From: HamBrewers@yahoogroups.com [mailto:HamBrewers@yahoogroups.com]On Behalf Of prabakaran prabakar
Sent: Friday, February 11, 2011 8:56 PM
To: hambrewers@yahoogroups.com
Subject: RE: [HamBrewers] Re: 2M VHF

 

 

i am using modified CXA1019 FM Radio circuit from 2006 for 2m reception.

 

To: HamBrewers@yahoogroups.com
From: sambhu_ec@yahoo.com
Date: Fri, 11 Feb 2011 14:54:34 +0000
Subject: [HamBrewers] Re: 2M VHF

 

yes..there will be heavy drifting.i am planning to use a pll controlled with a pic.. i have procured almost all the components needed for the RX,

But the coils to be wound lacks information in the document also
Is there anyone in this group who has experience with the same kit
Does anybody has the winding details of coils in RECEIVER board..
thaks again Raj and prabhakaran for their replies
--- In HamBrewers@yahoogroups.com, "Raj" <vu2zap@...> wrote:
>
> Prabhakaran,
>
> One of the problem is that simple mods will end up with low volume and it will pick up multiple stations due to >100Khz BW. We have change the filters and increase audio gain then it will do a great job. OTOH, the oscillator will drift a lot and it will be irritating to retune now and then!
>
> Welcome to the group!
>
> Cheers
> Raj vu2zap
>
> --- In HamBrewers@yahoogroups.com, "prabakaran.D" <bcdxer@> wrote:
> >
> >
> > For 2M FM receiver alone, you can modify any available fm radio receiver kit.
> > I am modified several of this kits for 2m reception.
> >
> >
> > --- In HamBrewers@yahoogroups.com, "Raj" <vu2zap@> wrote:
> > >
> > > Please attach the PDF file so that we can see the project.
> > >
> > > --- In HamBrewers@yahoogroups.com, "sambhu" <sambhu_ec@> wrote:
> > > >
> > > > Hello Friends,
> > > >
> > > > I want to build a 2m receiver..I have decided to follow the architecture of VU2IF 2m vhf transceiver. But over the internet i cant find the RX coil data. Only the coils in the TX portion is described in the PDF available in internet.
> > > >
> > > > if somebody has the winding details of coils in RX portion, then kindly share with me
> > > >
> > > >
> > > > By the way i will explain a bit about my idea..
> > > > 1. RF amp using BF 988
> > > > 2. Mixer using the same DG MOSFET
> > > > 3. FM IF using MC3359
> > > > 4. A PLL oscillator designed around a PIC and LMX 2306 or ADF 4116
> > > > 5. AF amp TBA 810
> > > >
> > > > Waiting for your help,
> > > > Thanking in advance
> > > >
> > >
> >
>



__._,_.___
Recent Activity:
.

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

Tuesday, February 22, 2011

[Flickr] Welcome!

     
 
Flickr®
 
  Welcome.  
 

Hi prabakar10!

Thanks for joining! Here's your account information:
Flickr screen name: prabakar10
Yahoo! ID: prabakar10
Contact email: medianetworkcoin.hams@blogger.com

Flickr is a great place to share photos. Get started now:

1Add a buddy icon
2Upload your first photos
3Find your friends
To keep you in the loop, we will notify you by email when there is activity related to you on Flickr. You can customize these emails or turn them off at any time.
To learn more about Flickr, read our informative FAQs or take the magical feature tour.
We look forward to seeing the world through your eyes!
Team Flickr
Flickr®
Flickr notifies you of new activity related to you. You can always customize these emails or turn them off.
Your use of Flickr is subject to the Yahoo! Terms of Service and Privacy Policy and the Flickr Community Guidelines
Posted by at No comments:

Sunday, February 20, 2011

HF Dipole

 

A very basic program for calculating the length of each leg of a 1/2 wave wire dipole antenna. Program good for 1 - 500 MHz, although intended for MF - HF useage. This app does nothing more than the standard 468/freq (MHz) type calculations. It was written for DOS many years ago and ported to Windows. The output shows the 1/2 wavelength and 1/4 wavelength design wire length in feet and meters. This app is probably of no help to experienced antenna designers.

Style: GUI, File size: 46K, zipped, 22K.

Update : Minor improvements made Feb 9, 1999

Current Version is:  2 / 9 / 1999

Download the hf_dipole.zip file

Posted by at No comments:

[HamBrewers] Re: User Manual for Optoelectronics M1 frequency counter

 

Hi Ravi,
I read that the BK103 was a rebranded M1.  Here is a link to the BK103 page that has the manual for download:
http://www.bkprecision.com/products/model/103/1mhz-to-3ghz-handheld-freq-counter-strength-meter.html
I hope this is the one you need!
73 Rich KD0BJT

--- In HamBrewers@yahoogroups.com, Ravi Miranda <ravimiranda@...> wrote:
>
> Hello
>
> Does anyone have a user manual for the M1 Optoelectronics Frequency Counter?
> I checked on the net, but does not seem to be available for download.
>
> Thanks
>
> Ravi
> --
> Live with the 3E's -- Energy, Enthusiasm and Empathy
>

__._,_.___
Recent Activity:
.

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

Saturday, February 19, 2011

[HamBrewers] User Manual for Optoelectronics M1 frequency counter

 


Hello

Does anyone have a user manual for the M1 Optoelectronics Frequency Counter? I checked on the net, but does not seem to be available for download.

Thanks

Ravi
--
Live with the 3E's -- Energy, Enthusiasm and Empathy

__._,_.___
Recent Activity:
.

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

Wednesday, February 16, 2011

[HamBrewers] Fw: [amsatindia] AMSAT INDIA- Technical talk on February 20th

 

 
----- Original Message -----
Sent: Wednesday, February 16, 2011 2:09 PM
Subject: [amsatindia] AMSAT INDIA- Technical talk on February 20th

 

AMSAT INDIAwill be holding technical talks and demonstrations about satellite
and satellite communication on third Sunday of every month.The Next talk on
"Telemetry Decoding" will be held on February 20th 2011.
Note: There are no fees applicable for this event and those registered are
requested to be seated 10 minutes in advance so we can start at sharp 10:30AM.

When: February 20th 2011 10.30AM - 11.30AM, This is open to all and those
interested can please send their names to VU3HCJ, Somu by writing to him at
sskummur@bsnl.in by February 19th 3PM. This will help make necessary
arrangements at the venue.

 
Note:If any last minute changes due to unavoidable circunstances the same will
be communicated on the amsatindia & vuhams groups on yahoogroups.
 
73's
Nitin [VU3TYG]
Secretary,AMSAT INDIA
www.amsatindia.org Where: Little Lilly Nursery School (Corner Building), No 5,
4th B Main Road, Next to BNES College (Important Landmark), Mahalakshmi Layout,
Bangalore.

[Non-text portions of this message have been removed]

__._,_.___
Recent Activity:
.

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

Tuesday, February 15, 2011

Re: [HamBrewers] Fw: [amsatindia] AMSAT INDIA February 2011 News Letter

 

Thank you Yan
Hope to work you on Sats soon.
Best 73
Pop
VU2POP
 
 
----- Original Message -----
Sent: Wednesday, February 16, 2011 11:57 AM
Subject: Re: [HamBrewers] Fw: [amsatindia] AMSAT INDIA February 2011 News Letter

 

Nice work Pop and interesting newsletter.
Congratulation.

73,
Yan.
---
Yannick DEVOS - XV4TUJ
http://capheda.wordpress.com/ (Blog in french)
http://www.qsl.net/xv4tuj/ (web page in english)

Le 16 févr. 2011 à 10:53, VU2POP a écrit :

>
>
>
> Subject: [amsatindia] AMSAT INDIA February 2011 News Letter
>
> All,
>
> AMSAT INDIA's February 2011 news letter is available for download. The PDF
> of the newsletter is available at
> http://amsatindia.org/Newsletter/AMSATINDIA-News-February2011.pdf and the
> archives at www.amsatindia.org/Newsletter
>
> Content of the Newsletter
>
> 1. Update on the Technical talk held on January 30th
>
> 2. Update on the Cubesat Transponder project by AMSAT INDIA.
>
> 3. Azimuth Elevation Rotator - A Homebrew approach by VU2POP
>
> 4. News from AMSAT organizations worldwide
>
> 73's
>
> Nitin [VU3TYG]
>
> Secretary, AMSAT INDIA
>
> www.amsatindia.org
>
>
>
>
>

__._,_.___
Recent Activity:
.

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

Re: [HamBrewers] Fw: [amsatindia] AMSAT INDIA February 2011 News Letter

 

Nice work Pop and interesting newsletter.
Congratulation.

73,
Yan.
---
Yannick DEVOS - XV4TUJ
http://capheda.wordpress.com/ (Blog in french)
http://www.qsl.net/xv4tuj/ (web page in english)

Le 16 févr. 2011 à 10:53, VU2POP a écrit :

>
>
>
> Subject: [amsatindia] AMSAT INDIA February 2011 News Letter
>
> All,
>
> AMSAT INDIA's February 2011 news letter is available for download. The PDF
> of the newsletter is available at
> http://amsatindia.org/Newsletter/AMSATINDIA-News-February2011.pdf and the
> archives at www.amsatindia.org/Newsletter
>
> Content of the Newsletter
>
> 1. Update on the Technical talk held on January 30th
>
> 2. Update on the Cubesat Transponder project by AMSAT INDIA.
>
> 3. Azimuth Elevation Rotator - A Homebrew approach by VU2POP
>
> 4. News from AMSAT organizations worldwide
>
> 73's
>
> Nitin [VU3TYG]
>
> Secretary, AMSAT INDIA
>
> www.amsatindia.org
>
>
>
>
>

__._,_.___
Recent Activity:
MARKETPLACE

Get great advice about dogs and cats. Visit the Dog & Cat Answers Center.

Stay on top of your group activity without leaving the page you're on - Get the Yahoo! Toolbar now.

.

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

[HamBrewers] Fw: [amsatindia] AMSAT INDIA February 2011 News Letter

 

 
Subject: [amsatindia] AMSAT INDIA February 2011 News Letter

 

All,

AMSAT INDIA's February 2011 news letter is available for download. The PDF
of the newsletter is available at
http://amsatindia.org/Newsletter/AMSATINDIA-News-February2011.pdf and the
archives at www.amsatindia.org/Newsletter

Content of the Newsletter

1. Update on the Technical talk held on January 30th

2. Update on the Cubesat Transponder project by AMSAT INDIA.

3. Azimuth Elevation Rotator - A Homebrew approach by VU2POP

4. News from AMSAT organizations worldwide

73's

Nitin [VU3TYG]

Secretary, AMSAT INDIA

www.amsatindia.org

__._,_.___
Recent Activity:
.

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

Monday, February 14, 2011

[HamBrewers] Re: 2M VHF

 

Sandeep ji i have seen Rahul ji 's and Raj ji's suggestions,,i am lucky enough to have all these components with me.I think i must experiment with both Yellow IFT coil and 455 Kc/s ceramic resonators, so that i can evaluate the difference..

But seeing the suggestions from these experienced homebrewers i know ceramic resonator should give better performance..

I dont have the PCB for the RX..so today i am starting the building of IF stage on a vero board..
will update after that..

see you guys

--- In HamBrewers@yahoogroups.com, Sandeep Lohia <sandeeplohia12@...> wrote:
>
> I would have gone with Raz & Rahul's suggestion for ceramic resonater
> even better commenly available @ Rs 10 a pair 2pin/3pin, also it's
> bandwith can be narrowed using pf fixed or trimmer in series.
>
> On 14/02/2011, VU2POP <vu2pop@...> wrote:
> > Hi Sajeesh
> > A pack of 4 IFTs available at Kelitronix , SP rd , Bangalore,
> > Best 73
> > Pop
> > VU2POP
> >
> >
> > ----- Original Message -----
> > From: Sajeesh Pilakkat
> > To: HamBrewers@yahoogroups.com
> > Sent: Monday, February 14, 2011 9:24 PM
> > Subject: Re: [HamBrewers] Re: 2M VHF
> >
> >
> >
> >
> > I wonder where one get the 455khz IFT that used get plenty earlier but
> > hardly any one sells now a days.
> >
> > 73s
> > Vu3Psz
> >
> >
> >
> >
> > ----------------------------------------------------------
> > From: Rajesh Kannan <kc2kby@...>
> > To: HamBrewers@yahoogroups.com
> > Sent: Mon, 14 February, 2011 6:04:30 PM
> > Subject: Re: [HamBrewers] Re: 2M VHF
> >
> >
> >
> > It is the can with Yellow paint on the screw. If you pull it out of an old
> > transistor, it is tuned!
> >
> > 73's
> > Raj
> > VU3RGK
> >
> > On Mon, Feb 14, 2011 at 5:40 PM, Mathew P.C <pcmathew2003@...>
> > wrote:
> >
> >
> >
> > Hi,
> > L9 - Use transistor IF coil which can be tuned to 455kHz.
> > Mathew
> >
> > --- On Sun, 13/2/11, sambhu <sambhu_ec@...> wrote:
> >
> >
> > From: sambhu <sambhu_ec@...>
> > Subject: [HamBrewers] Re: 2M VHF
> > To: HamBrewers@yahoogroups.com
> > Date: Sunday, 13 February, 2011, 9:03 PM
> >
> >
> > Sir,
> > Thanks for the data.one friend Tarun has also provided this
> > today..
> > Thanks for both of you..
> > Glad to hear you have much experience with this Rig..I have one
> > more doubt
> >
> > L9 is Quadrature detector coil.
> > In the data provided,it is directed to use 'Standard 455khz
> > coil'
> >
> > is this the same IF coils used in old transistor radios?
> > Yellow,Green and White..Which one should i use??
> >
> > Thanking once again Sir
> > --- In HamBrewers@yahoogroups.com, "Mathew P.C"
> > <pcmathew2003@> wrote:
> > >
> > > Hi ,
> > > Attached, please find, the coil data for 2M VHF by vu2EM,
> > which uses the ckt by VU2IF.
> > > I have constructed two nos. of the transceiver and they are
> > still in use with excellent result. The only problem with the rig is that it
> > has only two channels, 145.5 and 145.2MHz.
> > > I am very glad to share my experience with the home brewing.
> > >
> > > vu2mtw (P.C.Mathew)
> > >
> > > --- On Fri, 11/2/11, sambhu <sambhu_ec@> wrote:
> > >
> > > From: sambhu <sambhu_ec@>
> > > Subject: [HamBrewers] 2M VHF
> > > To: HamBrewers@yahoogroups.com
> > > Date: Friday, 11 February, 2011, 2:12 PM
> > >
> > > Hello Friends,
> > >
> > > I want to build a 2m receiver..I have decided to follow the
> > architecture of VU2IF 2m vhf transceiver. But over the internet i cant find
> > the RX coil data. Only the coils in the TX portion is described in the PDF
> > available in internet.
> > >
> > > if somebody has the winding details of coils in RX portion,
> > then kindly share with me
> > >
> > >
> > > By the way i will explain a bit about my idea..
> > > 1. RF amp using BF 988
> > > 2. Mixer using the same DG MOSFET
> > > 3. FM IF using MC3359
> > > 4. A PLL oscillator designed around a PIC and LMX 2306 or ADF
> > 4116
> > > 5. AF amp TBA 810
> > >
> > > Waiting for your help,
> > > Thanking in advance
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Yahoo! Groups Links
> > >
> >
> >
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>

__._,_.___
Recent Activity:
.

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

Re: [HamBrewers] Re: 2M VHF

 

Dear RAJ,
what is the source of toko and murata coils in vu if any?
                                venu


From: Raj <vu2zap@gmail.com>
To: HamBrewers@yahoogroups.com
Sent: Mon, 14 February, 2011 7:15:46 PM
Subject: [HamBrewers] Re: 2M VHF

 

Sambhu,

Please dont be so formal! hi hi

Here is some info.

Quadrature coils / ceramic discriminators for NBFM receiver chips

MC3357 - 1mh/100pf/100K parallel - CDB455C7 (Murata)

MC3359 - 7MC-8128Z(TOKO) - 7MC-13546Z(TOKO) - CDA455C49 (Toko)

MC3361 - 7MC-8128Z(TOKO) - 7MC-13546Z(TOKO) - CDA455C49 (Toko)

MC3362 - 680uf/180pf

MC3371 - Quad Coil TOKO 2A6597 HK (10 mm) or 7MC–8128Z (7 mm) - CBD455C16 (Murata)

MC3372 - Quad Coil TOKO 2A6597 HK (10 mm) or 7MC–8128Z (7 mm) - CBD455C18 (Murata)

Ceramic resonators in place of L9 - in files section/datasheets
http://f1.grp.yahoofs.com/v1/UCdZTeOVyE_hh_LDKSNozdCQAuYnuONMhMqmgD1OxJzlke8DrG5IDkyDGeb06slib-
Y9V17P3u1XuVsgyTgz/Datasheets/Murata%20ceramic%20resonators.pdf

--- In HamBrewers@yahoogroups.com, "sambhu" <sambhu_ec@...> wrote:
>
> Sir,
> Thanks for the data.one friend Tarun has also provided this today..
> Thanks for both of you..
> Glad to hear you have much experience with this Rig..I have one more doubt
>
> L9 is Quadrature detector coil.
> In the data provided,it is directed to use 'Standard 455khz coil'
>
> is this the same IF coils used in old transistor radios?
> Yellow,Green and White..Which one should i use??
>
> Thanking once again Sir
> --- In HamBrewers@yahoogroups.com, "Mathew P.C" <pcmathew2003@> wrote:
> >
> > Hi ,
> > Attached, please find, the coil data for 2M VHF by vu2EM, which uses the ckt by VU2IF.
> > I have constructed two nos. of the transceiver and they are still in use with excellent result. The only problem with the rig is that it has only two channels, 145.5 and 145.2MHz.
> > I am very glad to share my experience with the home brewing.
> >
> > vu2mtw (P.C.Mathew)
> >
> > --- On Fri, 11/2/11, sambhu <sambhu_ec@> wrote:
> >
> > From: sambhu <sambhu_ec@>
> > Subject: [HamBrewers] 2M VHF
> > To: HamBrewers@yahoogroups.com
> > Date: Friday, 11 February, 2011, 2:12 PM
> >
> > Hello Friends,
> >
> > I want to build a 2m receiver..I have decided to follow the architecture of VU2IF 2m vhf transceiver. But over the internet i cant find the RX coil data. Only the coils in the TX portion is described in the PDF available in internet.
> >
> > if somebody has the winding details of coils in RX portion, then kindly share with me
> >
> >
> > By the way i will explain a bit about my idea..
> > 1. RF amp using BF 988
> > 2. Mixer using the same DG MOSFET
> > 3. FM IF using MC3359
> > 4. A PLL oscillator designed around a PIC and LMX 2306 or ADF 4116
> > 5. AF amp TBA 810
> >
> > Waiting for your help,
> > Thanking in advance
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
>


__._,_.___
Recent Activity:
.

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

Re: [HamBrewers] Re: 2M VHF

 

I would have gone with Raz & Rahul's suggestion for ceramic resonater
even better commenly available @ Rs 10 a pair 2pin/3pin, also it's
bandwith can be narrowed using pf fixed or trimmer in series.

On 14/02/2011, VU2POP <vu2pop@gmail.com> wrote:
> Hi Sajeesh
> A pack of 4 IFTs available at Kelitronix , SP rd , Bangalore,
> Best 73
> Pop
> VU2POP
>
>
> ----- Original Message -----
> From: Sajeesh Pilakkat
> To: HamBrewers@yahoogroups.com
> Sent: Monday, February 14, 2011 9:24 PM
> Subject: Re: [HamBrewers] Re: 2M VHF
>
>
>
>
> I wonder where one get the 455khz IFT that used get plenty earlier but
> hardly any one sells now a days.
>
> 73s
> Vu3Psz
>
>
>
>
> ----------------------------------------------------------
> From: Rajesh Kannan <kc2kby@airtelmail.in>
> To: HamBrewers@yahoogroups.com
> Sent: Mon, 14 February, 2011 6:04:30 PM
> Subject: Re: [HamBrewers] Re: 2M VHF
>
>
>
> It is the can with Yellow paint on the screw. If you pull it out of an old
> transistor, it is tuned!
>
> 73's
> Raj
> VU3RGK
>
> On Mon, Feb 14, 2011 at 5:40 PM, Mathew P.C <pcmathew2003@yahoo.co.in>
> wrote:
>
>
>
> Hi,
> L9 - Use transistor IF coil which can be tuned to 455kHz.
> Mathew
>
> --- On Sun, 13/2/11, sambhu <sambhu_ec@yahoo.com> wrote:
>
>
> From: sambhu <sambhu_ec@yahoo.com>
> Subject: [HamBrewers] Re: 2M VHF
> To: HamBrewers@yahoogroups.com
> Date: Sunday, 13 February, 2011, 9:03 PM
>
>
> Sir,
> Thanks for the data.one friend Tarun has also provided this
> today..
> Thanks for both of you..
> Glad to hear you have much experience with this Rig..I have one
> more doubt
>
> L9 is Quadrature detector coil.
> In the data provided,it is directed to use 'Standard 455khz
> coil'
>
> is this the same IF coils used in old transistor radios?
> Yellow,Green and White..Which one should i use??
>
> Thanking once again Sir
> --- In HamBrewers@yahoogroups.com, "Mathew P.C"
> <pcmathew2003@...> wrote:
> >
> > Hi ,
> > Attached, please find, the coil data for 2M VHF by vu2EM,
> which uses the ckt by VU2IF.
> > I have constructed two nos. of the transceiver and they are
> still in use with excellent result. The only problem with the rig is that it
> has only two channels, 145.5 and 145.2MHz.
> > I am very glad to share my experience with the home brewing.
> >
> > vu2mtw (P.C.Mathew)
> >
> > --- On Fri, 11/2/11, sambhu <sambhu_ec@...> wrote:
> >
> > From: sambhu <sambhu_ec@...>
> > Subject: [HamBrewers] 2M VHF
> > To: HamBrewers@yahoogroups.com
> > Date: Friday, 11 February, 2011, 2:12 PM
> >
> > Hello Friends,
> >
> > I want to build a 2m receiver..I have decided to follow the
> architecture of VU2IF 2m vhf transceiver. But over the internet i cant find
> the RX coil data. Only the coils in the TX portion is described in the PDF
> available in internet.
> >
> > if somebody has the winding details of coils in RX portion,
> then kindly share with me
> >
> >
> > By the way i will explain a bit about my idea..
> > 1. RF amp using BF 988
> > 2. Mixer using the same DG MOSFET
> > 3. FM IF using MC3359
> > 4. A PLL oscillator designed around a PIC and LMX 2306 or ADF
> 4116
> > 5. AF amp TBA 810
> >
> > Waiting for your help,
> > Thanking in advance
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
>
>
>
>
>

__._,_.___
Recent Activity:
.

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

[HamBrewers] Re: 2M VHF

 

Oh thank god,,then i will go with the yellow IFT (i have some with my junk box)..Thanks for all my friends.
--- In HamBrewers@yahoogroups.com, Rajesh Kannan <kc2kby@...> wrote:
>
> It is the can with Yellow paint on the screw. If you pull it out of an old
> transistor, it is tuned!
>
> 73's
> Raj
> VU3RGK
> On Mon, Feb 14, 2011 at 5:40 PM, Mathew P.C <pcmathew2003@...>wrote:
>
> >
> >
> > Hi,
> > L9 - Use transistor IF coil which can be tuned to 455kHz.
> > Mathew
> >
> > --- On *Sun, 13/2/11, sambhu <sambhu_ec@...>* wrote:
> >
> >
> > From: sambhu <sambhu_ec@...>
> > Subject: [HamBrewers] Re: 2M VHF
> > To: HamBrewers@yahoogroups.com
> > Date: Sunday, 13 February, 2011, 9:03 PM
> >
> > Sir,
> > Thanks for the data.one friend Tarun has also provided this today..
> > Thanks for both of you..
> > Glad to hear you have much experience with this Rig..I have one more doubt
> >
> > L9 is Quadrature detector coil.
> > In the data provided,it is directed to use 'Standard 455khz coil'
> >
> > is this the same IF coils used in old transistor radios?
> > Yellow,Green and White..Which one should i use??
> >
> > Thanking once again Sir
> > --- In HamBrewers@yahoogroups.com<http://mc/compose?to=HamBrewers@yahoogroups.com>,
> > "Mathew P.C" <pcmathew2003@> wrote:
> > >
> > > Hi ,
> > > Attached, please find, the coil data for 2M VHF by vu2EM, which uses the
> > ckt by VU2IF.
> > > I have constructed two nos. of the transceiver and they are still in use
> > with excellent result. The only problem with the rig is that it has only two
> > channels, 145.5 and 145.2MHz.
> > > I am very glad to share my experience with the home brewing.
> > >
> > > vu2mtw (P.C.Mathew)
> > >
> > > --- On Fri, 11/2/11, sambhu <sambhu_ec@> wrote:
> > >
> > > From: sambhu <sambhu_ec@>
> > > Subject: [HamBrewers] 2M VHF
> > > To: HamBrewers@yahoogroups.com<http://mc/compose?to=HamBrewers@yahoogroups.com>
> > > Date: Friday, 11 February, 2011, 2:12 PM
> > >
> > > Hello Friends,
> > >
> > > I want to build a 2m receiver..I have decided to follow the architecture
> > of VU2IF 2m vhf transceiver. But over the internet i cant find the RX coil
> > data. Only the coils in the TX portion is described in the PDF available in
> > internet.
> > >
> > > if somebody has the winding details of coils in RX portion, then kindly
> > share with me
> > >
> > >
> > > By the way i will explain a bit about my idea..
> > > 1. RF amp using BF 988
> > > 2. Mixer using the same DG MOSFET
> > > 3. FM IF using MC3359
> > > 4. A PLL oscillator designed around a PIC and LMX 2306 or ADF 4116
> > > 5. AF amp TBA 810
> > >
> > > Waiting for your help,
> > > Thanking in advance
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Yahoo! Groups Links
> > >
> >
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
>

__._,_.___
Recent Activity:
.

__,_._,___
Posted by at No comments:
Subscribe to: Posts (Atom)