eHam.net - Amateur Radio (Ham Radio) Community

Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net


Reviews Categories | Electronic Component Suppliers | International Crystal Manufacturing Company, Inc. Help


Reviews Summary for International Crystal Manufacturing Company, Inc.
International Crystal Manufacturing Company, Inc. Reviews: 6 Average rating: 5.0/5 MSRP: $(missing—add MSRP)
Description: International Crystal Manufacturing Company, Inc. (ICM) is a family-owned, business established in 1951 to provide crystals, oscillators and filters for the military. Today, ICM manufactures in the U.S. an extensive line of quartz crystals, oscillators, filters, and TCXOs / VCTCXOs used in military applications, communications, microwave transmission, data acquisition and transmission, and cutting edge research.
Product is in production.
More info: http://www.icmfg.com/
Email Subscription
You are not subscribed to this review.

Subscribe!
My Subscriptions
Subscriptions Help

You can write your own review of the International Crystal Manufacturing Company, Inc..

WC4R Rating: 5/5 Mar 11, 2017 07:10 Send this review to a friend
Great service, now gone :(   Time owned: more than 12 months
Have used ICM on & off since the 1970's. Great products, high quality. Sorry to see the announcement today they are going out of business after 66 years.
I will have to rely on JAN CRYSTALS more (also good). http://www.jancrystals.com
 
YS1RS Rating: 5/5 Mar 10, 2017 15:02 Send this review to a friend
Excellent manufacturer who provided great service  Time owned: more than 12 months
I ordered the missing 10 meter band crystals for my Drake 2B receiver from this company and man, they were perfect!
Also ordered additional ones to use this Drake for all ham radio bands including WARC bands.
Received them way faster than they said it would take.
Excellent product! Needed more crystals for other projects but unable to afford them at present as those had special requirements.
Now, I just sadly heard they will be closing soon :-(
That is really sad as they had provided great service to the Ham Radio International Community for decades.
Will surely be missed as they were exceptional in all respects.
73 de Rob
YS1RS
 
W6LBV Rating: 5/5 Jul 31, 2013 13:21 Send this review to a friend
"International quality!"  Time owned: more than 12 months
In the 1960s and 70s, when Amateur Radio Service narrowband VHF/UHF FM and repeater communications were first being developed, today’s synthesized “rice rocket” transceivers had not yet been designed and marketed. The bulk of the early development work was done with surplus commercial two-way radio transceivers: Motorola, General Electric, RCA, E. F. Johnson, and others. Each of these non-synthesized radios required two quartz (frequency) crystals per operating channel, one for transmit and one for receive.

In those early growth times when crystals for newly-acquired radios needed to be ordered, everybody had a single response: “International Crystal Mfg. Corporation, 10 N. Lee, Oklahoma City.” Effectively, there was no serious second choice.

“ICM” had won the competition for several reasons. They had a big production facility, the majority of which was used for manufacturing the same kinds of crystals for commercial radio systems. ICM had the “crystal correlation data” (i.e., the manufacturing specifications) for just about every two-way commercial radio that had ever been produced. And they delivered a quality product, consistently. Of course it also helped that they stood by their products, seemingly unconditionally.

They could even handle special requests: “I want to inject the local oscillator on the opposite side of the received carrier from the normal injection location. Please cut my crystal accordingly.”

Today every two-way radio carries but a single frequency-determination crystal, to control its time base oscillator. The demand for specific channel operating crystals has all but vanished. But International can still do the job; over the past two decades I have ordered some crystals for old commercial radios. ICM turned them out as though the year was still 1972. One small niggle, however: in recent years it seems that more often than not the new crystals do not “net” on the operating channel with the trimmer capacitor in the center of its operating range, but rather more toward one end of the range or the other. A center-netting crystal is desirable so that when the crystal changes frequency very slightly as it “ages,” there is still useful range in the trimmer to bring it back to the correct frequency.

But, if that lack-of-netting condition ever proved to be a major problem, I could just send the crystal back to ICM, and they would take care of it. That’s “International quality.”
 
N7BHB Rating: 5/5 Jul 29, 2013 20:30 Send this review to a friend
Excellent Service & Work  Time owned: 3 to 6 months
Ordered new xmit & rec crystals for a Mastr II UHF repeater. Response was excellent. Very customer oriented. Both rocks required very little netting and have been solid since.
 
NQ5T Rating: 5/5 Jul 29, 2013 14:18 Send this review to a friend
Terrific service!!  Time owned: 0 to 3 months
Ordered several crystals for a Collins 51J4. When I ordered by phone I was told 2-3 weeks delivery. Well they arrived in 7 days, and were shipped 4 days after I placed the order. Really great service to the community.
 
KC8IMB Rating: 5/5 Aug 20, 2012 12:54 Send this review to a friend
Great service!  Time owned: 0 to 3 months
Nothing to complain about here. They had the SSB crystal I needed for an old Allied SX-190 IN STOCK. Super-fast shipping and they really made sure it's what I actually required. Thank you Sara Gore for the fine service!

They also make custom crystals for pretty much ANYTHING you can think of. So if you have a special project that needs some exotic XTAL, I'd check with them.
 


If you have any questions, problems, or suggestions about Reviews, please email your Reviews Manager.