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| Reviews Summary for PAR SCANNER INTERMOD FILTERS |
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Reviews: 15
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Average rating: 5.0/5
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MSRP: $74 USD
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Description: These scanner filters are used to eliminate interference from high powered pagers and channel "skipping" from other frequencies. The filters are designed to eliminate specific offending frequencies.
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More info: http://www.grove-ent.com/filters.html
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write your own review of the PAR SCANNER INTERMOD FILTERS.
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WB2TPS
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Rating: 5/5
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Jul 1, 2004 18:26
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Terrific!
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Time owned: more than 12 months
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Inter-Mod was killing my FT-8000 on 2M. The PAR filter cleaned it up.
I decided to give it the "acid test"
Using a 2M radio in NYC can be hopeless. It is inter-mod alley.
I put the FT-8000 and PAR filter in the car and drove towards Manhattan. As I approached the skyline from the LIE, I waited for the radio front-end to crumble. To my delight, the filter worked!!!
Jim
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WT3844
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Rating: 5/5
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Jul 1, 2004 17:44
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GOOD PRODUCT
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Time owned: 0 to 3 months
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AWESOME PRODUCT MY BC895XLT AND 780 XLT WERE FILLED WITH INTERMOD AFTER I BEEFED UP MY ANTENNA TO A TUNED ONE AND UPGRADED MY COAX TO RG8U THEN I ORDERED THE PAR VHF SYM 152 WOW RETURNED MY RADIOS TO SUPERB PERFORMANCE COMPLETELY GOT RID OF 90 OERCENT OF MY INTERMOD PROBLEMS MY 895 WAS ALMOST USELESS BEFORE THIS FILTER NOW I AM USING IT ALMOST AS MUCH AS MY 8500 AND BC780 THIS IS A SUPERB PRODUCT AND DOES WHAT PAR SAYS ALSO MY RANGE HAS INCREASED A LOT THANKS PAR
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JACK11
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Rating: 5/5
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Feb 25, 2004 14:02
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VHFSYM152
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Time owned: 0 to 3 months
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I received a PAR SYMVHF152 intermod filter.Iwas having big problems with inter mod on all of my scanners.This filter really did the trick.Took it all right out.Plus i wanted a Type"N" and a BNC connectors and they took care of it.The filter is proffesionally built and very well put together.Highly reccomended.If i have to buy another filter it will be thru PAR.
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WPYI784
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Rating: 5/5
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Nov 28, 2003 11:30
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VHFSYM162.4 Intermod Filter
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Time owned: 0 to 3 months
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My local NWS freq of 162.475 MHz was showing up in frequencies from 155 Mhz to 170 MHZ on a BC780XLT scanner. A few months ago it was sugested on the Strong Signals site (www.srtongsignals.net) I contact Par Electronics for a notch filter. The recomendation was spot on.
After reviewing their web site (www.parelectronics.com) I emailed an inquiry and received a response from the owner Dale Parfitt W4OP. Great guy, I have never contacted a business whose owner checks his email so often. If you send in an inquiry you WILL get a prompt response.
I was finially able to order a model VHFSYM162.4 notch filter last week. I was not disappointed. Opening the box I was reminded of my Stridsberg Multicoupler. Build quality is first rate. It makes you feel like you just purchased a truly professional grade piece of equipment. The filter I purchased provides an attenuating notch of -43.38 dB at 162.47 MHz. Attenuation at 160.07 Mhz is only -2.99 dB and at 165.35 MHz attenuation is only -3.06 dB. That is a steep notch to me.
It solved my overload problem!!
Beats the heck out of having 20+ channels on my scanner using the built in -10 dB attenuator. I placed the filter ahead of the Stridsberg multicoupler that feeds my Pro 2004, BC895XLT, and BC780XLT scanners. According to Dale the insertion loss at 800MHz is .5 Db or less. I cannot see any negative effects on the 800 MHz trunked systems I monitor. Indeed without the front end overload it appears the overall sensitivity of all three scanners has improved.
Great Guy. Great company. Great Product.
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RINKER
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Rating: 5/5
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Feb 20, 2003 23:14
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This review describes PAR's scanner intermod filters
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Time owned: 6 to 12 months
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My area of interest with scanners is in listening to railroad communications, specifically in the 160-161MHZ frequency range. The railroads uses a series of repeaters placed along side of the tracks at regular intervals which allow the engines to communicate with the dispatchers at greatly reduced power, thus for me reducing the listening range of a Radio Shack PRO-91 scanner to just a few miles with the conventional rubber duckie antenna or ever radio shacks moderately priced outdoor antenna when listening at home.
To increase my listening range, I bought a tuned 3/4 wave antenna (MAX RAD - $60) and two amplifiers(GRE - $59.95 each).
Once I bought the quality tuned antenna and amplifiers for my scanner, along with the increase in listening range came all sorts of interference. In certain areas while traveling, the scanner became almost useless due to the constant interference.
In comes the PAR scanner intermod filter. The filters are designed to eliminate those frequencies which are causing the interference.
In most cases, the interference comes from high powered pagers in the 153MHZ, 158MHZ, and 462MHZ frequencies showing up a "beeps" and "noise". In other cases I got "skipping" from the 162MHZ (weather) and 155MHZ (fire/police). The skipping was the communications of these frequencies showing up on the frequencies I was listening to....very annoying at best....making the scanner unusable at times.
The PAR filters work by filtering those frequencies from entering the front end of the scanner, thus eliminating the problem. Along with the elimination of the interference came an increase in range due to the front end of the scanner no longer being overloaded by many of the high powered frequencies.
The frequencies which were the greatest problem were:
153MHZ(pagers), 158MHZ(pagers), 155MHZ(fire and police) and 162MHZ(weather)
Using the combination of filters, tuned antenna, and amplifiers I was able to get a maximum range of over 30 miles (up from just 2 miles without).
The PAR filters are simple to use and very effective. Just put them between the antenna and scanner using standard BNC connectors and that's it. They can be chained together when using multiple filters. I have made a 1' x 6" x 2" box with all my filters connected together (along with the amplifiers) that can be easily connected/disconnected from the scanner and antenna. The box is small enought to fit right under the car seat making it convenient for travel.
The PAR catalog numbers are as follows:
VHFDN153HT
VHFDN158HT
VHFDN162HT
VHFDN(XXX)HT = any custom freq
VHFFM
The price of the off the shelf filters is $69.95 and a custom filter (like the 155MHZ PAR made for me) is $79.95.
In the long run, the money is well worth it because they can be used with any scanner system or antenna.
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