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New product: New filter added to product portfolio
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post New product: New filter added to product portfolio Reply with quote
http://www.pcs-electronics.com/lpf3000-pass-filter-with-protection-p-1123.html



500-1000W Low Pass filter with built-in SWR/Power meter Most FM transmitters produce harmonics at even multiples of your fundamental frequency. If your harmonics fall on or near a TV channel or Maritime frequency you could cause severe interference to that channel. The most common cause of fines from federal agencies is due to TVI or other interference from your transmitter which generates a complaint. Use of the nicely priced PCS 3000 low pass filter is the best method of eliminating this kind of interference. The low insertion loss of the PCS-3000 filters makes them well suited for use on power levels as low as 10 watts on up to 500-1000 watts!

These units are constructed using high-quality 1KV mica capacitors and silver-plated wire! SWR and PWR voltages are provided for power/swr measuring purpose. Two calibrating trimmers are provided as well to simplify operation. SWR protection circuitry is provided as well and its sensitivity can be adjusted with one of the trimmers. When reflected power (SWR) reaches certain level swr protection output goes low and pulls more current low as the reflected power increases. This can be connected to the bias circuitry in your amplifier to shut-down the power and prevent damage to the output transistors.

Available in two versions, one without any coaxial cable included and the other with two 15-cm pieces of high quality teflon hi-temp coaxial cable, fully stripped on both ends and soldered to the PCB on one end. Feel free to order any connectors with this version and we will solder/attach them to the cable for you, just ask for this service under comments at checkout.

A perfect companion for the pallet amplifiers, offering output filtering and swr protection! Also allows cascading for ultra clean signal!

Technical specifications:
- Input/Output Impedance: 50 Ohms
- Insertion Loss: 0.3dB typ.
- Power handling: 500W tested, should handle 1KW easily
- Typical stop-band attenuation: >40dB
- Cut-Off Frequency: 120 MHz (-3dB down)
- Input/Output Connectors:solder pads for coax
- Duty Cycle Rated for continuous operation

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Wed May 02, 2007 3:28 pm View user's profile Send private message Visit poster's website
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