Mod for Modern TV

RCA Theatre System Horns

RCA Theatre System Horns

Altec horns

Horns built by "Altec"

Huge Horns

One more painting by Greg Fernandes

Paintings by Greg Fernandes

These are some of the copy righted paintings by an Australian artists Mr. Greg Fernandes. See the lush strokes of colour. The artist says that he has inspired by Great Indian Artist Raja Ravi Varma.

One more Corner Horn

Spherical Corner Horn 

Again Some Horns

Music Server of Audio Tapes ?

Server of Audio Tapes

I think this player can play non stop music analogue almost for a day.

My DIY Yagi Antenna for FM Band

DIY Yagi Antenna

Since I live in Kalyan receiving clean & clear FM signals was always been a major problem to me. Therefore in spite of having many receivers I always suffered from disturbance in FM signals. Kalyan is situated around 50 Kms away from Mumbai. As per Govt. of India policy the private FM operators need to install their transmitters on Govt. towers. In Mumbai all the private FM operators have their transmitters on Mumbai Doordarshan's TV tower at Worli. I tried with many tricks from Rabbit's Ear Antenna to a long wire stretched up to the terrace to receive the clear signals. However for many years i did not get clear FM Stereo Signals. Since Kalyan is surrounded by Parseek Hills around Thane, it is very difficult to get a direct path for the radio waves.

This was until I stumbled upon a content on the Internet regarding the antenna design.The pictures are displayed below.

The dimensions are calculated taking in to consideration center frequency of 100 Mhz.

1 - director 1 120 / frequency 

A - interval betwen 1 at 260 / frequency

2 - director 2 125 / frequency 

B - interval betwen  2 at 345 / frequency

3 - director 3 130 / frequency 

C - interval betwen  3 at 430 / frequency

4 - director 4 138 / frequency 

D - interval betwen  4 at 530 / frequency

5 - Dipôle 143 / frequency 

E - interval betwen  5 at 648 / frequency

6 - reflector 150 / frequency 

The details are available on the following link.

http://radio.meteor.free.fr/us/antenna.html

http://radio.meteor.free.fr/us/yagi_fm.html

For at least an year I was planning to build one but could not get time for the build. In last week I decided to build it according to the plans depicted above.

Materials Required.

1) 8 mm Aluminium Tubing.

2) Wooden strip 1"x 1.5" x 7' size.

3) Small PVC pipe & a Tee Joint.

4) GI Pipe 1" x 6' Long

5) Twin Lead Wire.

Cost Involved

1) Aluminium Tubing - Rs.480/-

2) Wooden Mast - Rs.30/-

3) GI Pipe  - Rs.300/-

4) PVC fitting - Rs.30/-

5) Twin Lead Wire - Rs.50/-

6) Most Important  - Angry stares from Wifey.

Total - Rs.890/-

It was very difficult to find aluminium tubing locally. Finally I got it in Metal Market at Kalbadevi. The tubes I got were of 12' long & it was very difficult to transport these to Kalyan in tact. Ultimately I cut all the tubes to size in my Parent's home in Lalbaug. 

The most difficult part was to make a dipole as it involved bending of the tube. I tried every trick but I did not suceed in making exactly parallel U bends in one plane. Ultimately I settled for cut GI cloth hanger & got inserted in to the tube. So now my antenna is made up of composite material. The construction though looks simple, it is very difficult to fabricate it without proper tools. The photos of my antenna are attached below. 

Since my receiver accepts 300 Ohm unbalanced antenna, I did not go for a balun and a coaxial wire. I used twin lead wire for the connection.

Its been 12 Hours now & I am getting clean & clear FM stereo signals from 8 out of 9 FM Radio Stations. The only remaining station too i am getting in Mono.

Hope this post encourages other people to build one.

I am welcome to your queries. So dont hesitate. 

Some More Horn speakers

Beautiful Horn speaker

Beautiful Horn speaker

See the nature of craftsmanship in building this horn speaker

Voigt Corner Horns

Beautiful Voigt Corner Horn

My first DIY attempt in to electronics

I have ordered a Pass DCB1 kit from one of the FM of HFV with a power supply and a volume control pot. I will have to source for a 15-0-15 R-Core transformer & a cabinet. Once the kit arrives I will look for the transformer & the cabinet. This is a photo of the build by the FM. I will post the photos of the progress once I get all the materials.

Horns Made in Serbia

These are the most beautiful horns I have seen, that too from a country like Serbia which is not famous for this kind of business.

Big Size Horns

I always wonder what kind of bass these kind of horns will be generating. The horns costed $ 20000 in 1952. Surprising isn't it?

Weird sense of humour

What will you call it ? Weird sense of humour ?

पाहतो जेव्हा खिडकीत तुला मी

पाहतो जेव्हा खिडकीत तुला

पाहतो जेव्हा खिडकीत तुला मी वाढते श्वासांच्या पेक्षा निःश्वासांची संख्या,

अचानक वाटते ह्रदयाच्या ठोक्यांना लाभला संगीताचा बाज नवा.

लाजुन हासतेस जेव्हा तु वाटतो उधळला शुभ्र मोतीयांचा अनमोल खजिना,

वाढते तापमान शरीरातले जसा शिशिरातही येतो अनुभव ग्रीष्माचा.

अवतरतो अवचित वसंत जेव्हा माळतेस तु केसांत गजरा मोग-याचा,

मोकळ्या केसांत तुझिया मग अडकतो जीव माझा होउन पिसासारखा.

सावरतेस जेव्हा तु ओढणी तुझी उलगडत जातो भरदिवसाही चित्रपट स्वप्नांचा,

कृष्णधवल आयुष्यात माझ्या मग होतो आपसुक वर्षाव इंद्रधनुषी रंगांचा.

पाहतेस जेव्हा तु वळुनी माझ्याकडे जातो शिखरास मनोरथांचा धावा,

अंतरीच्या हाकांना तेव्हा वाटतो द्यावा प्रतिसाद तोडुनी रितीभातींच्या श्रृंखला.

गुंफतेस जेव्हा तु बोटांत बोटे उजळतात लाखो दिपज्योती मनातल्या,

नकळत गुंफला जातो मग स्पंदनांत माझ्या तुझिया स्पंदनांचा मेळा.

संकोचत जेव्हा तु टाकतेस गळ्यात माझ्या करकमलांच्या तुझिया माळा,

धुंदावुनी जातो तेव्हा मी वाटतो लिहावा इतिहास सारा पुन्हा एकदा.

                                                                               प्रसाद कर्पे 

Butterfly Horns

Butterfly Horns.

Two 15" woofers mounted in a unique enclosure deliver bass that no high end design using small woofers can even hope to match. 104db efficiency (1w/1m) means any low powered tube amplifier can drive the Monarch. Large solid wood baffles help load the woofers and make room placement far less demanding. OMA's proprietary cast aluminum alloy horn and compression driver cover the midrange and high frequencies, with superb integration due to a simple crossover network.