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| Reviews Summary for International Radio (Inrad) Crystal Filters |
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Reviews: 34
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Average rating: 4.8/5
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MSRP: $115-155
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Description: Maker of OEM type IF filters for various transceivers.
mailto: sales@inrad.net
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More info: http://www.qth.com/inrad
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write your own review of the International Radio (Inrad) Crystal Filters.
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W7VO
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Rating: 5/5
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Oct 20, 2009 15:12
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Great product, Great Service
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Time owned: 0 to 3 months
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I recently purchased a used FT 1000D that had all the stock filters, but was missing the accessory CW 250Hz 3rd IF filter (Yaesu YF-110-CN) I could not find either a used one or a new one anywhere. INRAD not only carries them,(#704C), they have them IN STOCK. It was on my door within a couple of days, along with the roofing filter. The quality was OEM, and it plugged right in. Performance was great, it works as advertised.
An amateur radio company run by, and for hams. Great!
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K0EX
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Rating: 5/5
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Mar 4, 2009 07:16
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for a Kenwood TS-570D(G)
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Time owned: 0 to 3 months
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i just bought a 2nd TS-570D(G). in my 1st 570, i have the 500Hz YK88C-1. for this 2nd one, i decided to try an Inrad 400Hz. after installing the Inrad, i put both radios simultaneously on antennas. wow... what a difference btwn the filters! the stock 500Hz filter has "blow-by" for several kHz beyond the roll-off point of the audible signal. the Inrad 400Hz rolls off faster, steeper, and has no detectible "blow-by", period. yes, two of the ten filter-mounting pins on the 570's main PC-board have to be snipped. be prepared for doing that. i am very, very happy with the Inrad filter!
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G4IPZ
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Rating: 3/5
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Feb 29, 2008 10:13
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filter works great but......
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Time owned: 0 to 3 months
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I wanted to add the narrow band ssb filter to my TS130S. I could have taken the one out of my qrp TS130V and in hindsight wish I had.
I ordered the filter from Inrad since no one in the UK had them at all (Normal thing "Sorry sir thats sooooo old!") and they're like rocking horse manure on ebay.
Ok the price was good as was the shipping to the UK but what I didn't realise was that the unit which was to be supplied is not a pin for pin substitue for the OEM filter.
Firstly the filter itself is much larger than the OEM device. Also the pin outs do not even correspond. Hence it is supplied with a piece of thin coax, a strip of double sided tape and a poor quality photocopied installation sheet.
The first problem was that to stick the filter on the side of the vfo housing where Inrad suggest needed two pieces of coax of the length of the single piece they supplied to reach the IF board. Inrad state the one piece supplied, when cut in two will allow installation. This is totally incorrect. Luckily my junk box offered up some suitable cable.
Wiring up the filter wasn't a problem and fitting the coax to the IF board was ok but no matter how you try fitting the filter in the suggested position, two of the connection wires are very likely to short onto the lower case half even with the connections trimmed. So I ended up having to add some insulating material above the filter 'just in case' .
As for the performance I can only be quantitative with my ears.
It is certainly no worse than the OEM filter in my TS130V and switching back and forth between the 130V and 130S on the same signal showed no discernible difference one way or the other.
Inrad make the excuse that the filter they supply is larger than the OEM device because it's better.
Hmmmm - maybe it is if you sling the gear on a test jig but audibly it seemed the same to me.
So the filter's OK but a bit more clarity as to the level of modification required prior to placing the order would have been a nice idea.
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W3PH
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Rating: 5/5
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Jan 27, 2005 10:23
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Superb
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Time owned: 0 to 3 months
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Added a pair of 400 Hz filters to a TS-940 that I'm refurbishing, and performance is the best I've seen. Filter skirts are very sharp (signals just disappear when you cross the edge of the bandpass).
Shipped immediately, got the filters in about 3 days.
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8P6SH
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Rating: 5/5
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Aug 18, 2004 01:06
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There's nothing better
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Time owned: more than 12 months
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I've purchased a number of inrad IF filters, for Kenwood and Yaesu rigs and they have significantly improved the performance of each rig.
Up to now, I've used the 2.1KHz, 1.8KHz and 400Hz filters mainly for 8 or 9 MHz IF's but also for the 455KHz IF.
The 400 is particularly good for CW and RTTY, while the 2.1 is a great compromise between sharp selectivity and fidelity. I've found the 1.8 good for contests, but a pair of 1.8's cascaded makes copy for me a little more difficult.
My last order involved some complicated shipping to get the filters to me at a hotel, before travelling, and the service was excellent, and filters arrived on time!!!
For serious competition grade DXing and contests, there's nothing better.
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N4HY
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Rating: 5/5
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Mar 26, 2004 12:37
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A must for FT1000 owners
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Time owned: 6 to 12 months
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I recently purchased the FT1000MP modifications from Inrad as well as optional filters. The modifications if you purchase them all, fix the key clicks, hiss, etc. well known problems. The filters really make the radio much more enjoyable in crowded CW and RTTY bands. The FT1000MP is a great radio but is really improved with the Inrad upgrades. They were professionally packaged and delivered promptly.
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AD5X
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Rating: 5/5
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Mar 25, 2004 16:02
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Great Filters!
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Time owned: more than 12 months
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I've used IRC filters in my FT-1000MP MKV (all optional filters), my FT-817, an old FT-7, a previous TS-520S, a TS-50S, and a TS-440S. The filters all work great. I highly recommend these filters.
Phil - AD5X
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K4LLA
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Rating: 5/5
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Mar 25, 2004 14:21
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Excellent aftermarket filters
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Time owned: 0 to 3 months
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I bought a pair of 400Hz CW filters for my TS-850 from Inrad. They had them in stock and shipped them right away. Inrad fabbed their own custom circuit boards for their 850 filters, and they came ready to go, no soldering required. The package came with clear instructions as to the installation, and the filters popped right in with no trouble. The filter themselves sound excellent and exhibit the advertised selectivity. I will definitely buy from Inrad again.
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N4SL
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Rating: 5/5
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Mar 15, 2004 00:21
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Don't hesitate to buy these
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Time owned: more than 12 months
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Everyone else has said it all, I've filled my FT1000MP with Inrad filters: SSB 2.1KHz, CW 400 and 250Hz. These are snap-in.
I also put a 400Hz CW and a 2.1KHz SSB filter in my FT847. These were solder-in but the instructions were clear and it worked great.
Great filters, great company to work with, I wouldn't change a thing. I've had these filters for many years without a hassle.
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WB0UGO
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Rating: 5/5
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Mar 14, 2004 19:39
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EXCELLENT
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Time owned: more than 12 months
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I have used these filters in a 1000MP, Corsair2, FT897 and Ft990 with excellent results. Not only is the product excellent, but the cost is less than factory filters. The service is also very good. 73's Steve........
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