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
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
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