2m 144MHZ - 146MHZ RECEIVER
Her I am use MC3357 / LA1186
in this 2m Receiver
This experiment was
done when I was a SWL lesson 145.625MHz Repeater / 145.650MHz Repeater 59 Signal Repot With my Home brew ground plan
Antenna 10 feet height Excellent
Sensitivity without preamp . Local osc are very stable when I on Rx 2min in
drift +- 50 kHz and get very stable in 24 hrs.
This Receiver good perform for SWL / Ham operators / Monitor
2m band.
MC3357 DESCRIPTION
Includes
Oscillator, Mixer, Limiting Amplifier, Quadrature Discriminator,
Active
Filter, Squelch, Scan Control, and Mute Switch.
• Excellent
Sensitivity: Input Limiting Voltage – (– 3.0 dB) =
5.0 mV (Typical)
• Low Number
of External Parts Required
LA1186 Features and Functions
• Contains RF amplifier, MIX, OSC, AFC diode
• Operating
voltage: 1.8 to 8.0V.
•
Improvement in cross modulation characteristic due to the use of
double-balanced MIX.
•
Improvement in strong input characteristic.
• Less
spurious radiation from local OSC.
• TV (1 to
12 channel) receive capability.
2m RECEIVER SCHEMATIC DIAGRAM
PCB side Size . H50.8mm / 103.33mm
Component side Size . H50.8mm / 103.33mm
Her the sample video
i Get more E Mail Tnx for All................
ReplyDeleteExcellent work, Gayan. Keep up the good work, you are a fine experimenter.
ReplyDelete73,
Ron
http://www.qsl.net/4s6ara/pro6.html
ReplyDelete"The 1st IF is fed to the Motorola MC3361 IC which is having Dual IF stages. By using a 10.245MHz crystal at the oscillator of this IC, the incoming 10.7MHz signal is converted to 455KHz. (MC3357 can also be used. But I found that MC3361 is twice as sensitive than MC3357 and has less external parts)"
I designed this tested and published on RSSL News letter as well. Many HAMs started building this later on and found that this combination is superb and low cost. I'm happy that you have built this and enjoying it. Must congratulate on your presentation of the project
Nalaka 4S7NMM
is work very well i can copy yati repetitor 57 in panadua
ReplyDeleteI am SWL Roy
Thanks for the info.
ReplyDeleteWorks fine and is of good quality.
Thank you very much indeed.
Hi,
ReplyDeletei want to build this little receiver but can you tell me the values for R2 and R3 on the 10.7 P.PA Board ?
regards
Francis Ellis
Hallo everybody in here I had been trying to download the full artickel file ,25 times but it is not posibel fore me ,anyway I want to make this great resiver but I need a full list off all components you are using to build this resiver is there any one in here there can help me ,,my Email is robertfuture@gmail.com feel free to send a list to me ,then I will be very happy ,,anyway I want to use this resiver on a HB9CV antenna fore fox hunting here in Denmark,,,73 Robert...
ReplyDelete
ReplyDeleteI have the whole article in pdf. Who needs to send e-mail. My email is romaorocha@gmail.com
Dear Gayan,
ReplyDeleteGood morning.
This is Kyaw from Myanmar(Burma).
It is very much helpful article for me.
May I ask, Can LA1186 replace with TA7358ap directly?
Please reply in favor.
The n Rgs.
Dear Gayan,
ReplyDeleteThis is Kyaw from Myanmar(Burma).
Really ths for your very much helpful article.
May I ask, Can LA1186 replace directly with TA7358ap?
Because I could not find LA1186 here in Myanmar.
Please reply in favor.
With Ths n Rgs
Kyaw