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eHam Forums => Computers And Software => Topic started by: AD6KA on September 20, 2011, 11:33:53 PM



Title: USB->Serial Adaptor Frustration
Post by: AD6KA on September 20, 2011, 11:33:53 PM
Today I decided to start cleaning up the operating desk of extraneous cables & whatnot
and make sure all is running OK for CQ DX RTTY this weekend.

Imagine my surprise when NOT ONE of my THREE USB->DB9 Serial Adapter cables
worked AT ALL with my brand new Windows 7 computer.  This was bad, really BAD!
I had previously used a computer running XP, but it was already dead and gone.
No connectivity, no contesting!
I'll admit it I do not know a lot about computers, but have always been able
to hookup level controllers for rig CAT control, configure HF modems, Interfaces,easy simple stuff like that.
Then I remembered an old thread that recommended always using USB-Serial adapters
 that use a certain chipset, which some Googling told me is called FTDI Chipset
(whatever that is).

I ran down to the local large computer store (Fry's Electronics) and they had NO IDEA
what I was talking about. None of the adapter packages said  "FTDI" on them. One "salesman"
even said "This one WILL work with Win 7, even though it was not listed on package
as one of the supported OS's.

Anyway, I ended up finding them at Amazon and ordered them with two day delivery for the test.
I don't have the brand name in front of me, but they are listed as:
"USB to RS232 Serial DB9 Cable Adapter FTDI Chipset 10 Feet Supports Windows 7 64bit"

Will these probably work OK with Win 7 for CI-V control of my PROII and operating my HAL DXP-38?
(Yes, I already have the Icom CT-17  level controller.)
TNX ES 73, Ken  AD6KA
PS: Don't shop at Fry's Electronics. They are clueless..... and rumors
abound about them selling "grey market" merchandise.


Title: RE: USB->Serial Adaptor Frustration
Post by: W8JX on September 21, 2011, 04:25:58 AM
It is all about the drivers, not the chipset itself. Any adapter you have had for several years is not likely to support Win7 unless that same adapter is still in production and drivers have been updated. I buy them by driver support not by chipset.


Title: RE: USB->Serial Adaptor Frustration
Post by: AB2RC on September 21, 2011, 04:32:38 AM
I am a Mac & Linux user, so I can't tell you where to look to see what type of converter you currently have. Determining which one is easy for Macs & Linux. If memory serves correctly I think you might need to look at the add/remove hardware in control panel to see what is on the usb bus.

Either way, pretty much all usb/serial converters use either the ftdi or prolific chip set to do the heavy lifting.
You probably just need the correct driver for win 7. You can get a generic prolific one at http://www.prolific.com.tw/eng/downloads.asp?id=31
and a generic ftdi one at http://www.ftdichip.com/Drivers/VCP.htm

One or the other should work, depending on which device you have.


Alex/AB2RC


Title: RE: USB->Serial Adaptor Frustration
Post by: AK7V on September 21, 2011, 11:06:56 AM
I have never had problems with the TRENDnet TU-S9, even with 2 of them hooked to the same computer.  I got them on Amazon for around $12.00.


Title: RE: USB->Serial Adaptor Frustration
Post by: AD6KA on September 21, 2011, 01:16:12 PM
Thanks for all the great relies.
I tried the Prolific drivers but no luck.
I will go check out the FTDI drivers.

This whole thing sucks, but at least I didn't discover
the problem the day of the contest!
tnx es 73, ken  ad6ka


Title: RE: USB->Serial Adaptor Frustration
Post by: W8JX on September 21, 2011, 03:15:02 PM
Newer is not always better in computer OS world. When you migrate to a 64 bit platform never assume that devices will transfer. It is better than a few years ago when 64bit drivers were much harder to come by.


Title: RE: USB->Serial Adaptor Frustration
Post by: K2CMH on September 22, 2011, 11:58:43 AM
I have heard of problems with the prolific drivers and have also experienced them first hand.  I have one of the USB Cat62 cables (not the Yaesu one) that I use to connect to my FT-817.  After just a couple of minutes of use, the virtual serial port becomes unresponsive.  I forget on which forum I read it, but lots of people were having the same problem and the general guidance was to stay away from any USB/Serial that had a chipset that required the Prolific drivers.


Title: RE: USB->Serial Adaptor Frustration
Post by: K3AN on September 22, 2011, 02:18:13 PM
FTDI stands for Future Devices Technology International, the name of a company that makes devices like USB to serial adapters. Prolific is another company in this market. I would be surprised if either company made drivers (computer code) for another company's devices.


Title: RE: USB->Serial Adaptor Frustration
Post by: AD6KA on September 22, 2011, 07:02:14 PM
Weal, my FTDI CHipset adapters arrived today.
Good news: They operate ALL my serial devices under Windows 7.
BAD NEWS
They do NOT operate my HAL DXP-38 under Writelog and Windows 7,
and WriteLog.
CRAP:
I WISH I had done some more readingabout WriteLog and Win 7,
seems there are TONS of problems. An hours worth of Googling
produced some esoteric, very over my computer ability ways to make
it work.
I don't think that is going to happen.
ANYONE know an easy was to get Writelog, RTYYrite(WL's rtty program) and DSP to mesh?

OR  am  going to have to go to a completely new Windows 7 (hopefully) based
contesting program?


I do NOT need much, though writelog provided a LOT, I usedMAYBE 20% of the features.
I do not need a CW interface, I do not need to turn rotors and keep track of beam headings
(for my  vertical, hihi)...just lot of contest scorings built in and export to ADIF or cabrillo.
Would be NICE if I could use my DSP-38 with it too>

SUGESTIONS FOR NEW A NEW RTTY CONTEST PROGRAM AFTER 11 YEARS ONTHE SAME ONE?
thanks!


One thing I LOVED about Writelog was the copy screen. It had callsign recognition
(that worked fairly well) and if it spotted a prefix that was a multiplier for that band, it would
highlight it Yellow,if it was stll a good call that you hadn't worked, it highlighted it green, and if it was DUPE it highlighted it RED.

And all you had t do to import a callsign from your RTTY screen to your "LOG & Entry" windowwas click on that call.

I havenot looked at RTTY Contesting programs in YEARS.
Can you rtty Fna please give me some hintsbased on my above situation?
THANKS ES 73, KEN  AD6KA/5R8GQ


Title: RE: USB->Serial Adaptor Frustration
Post by: K3TN on September 23, 2011, 03:20:42 AM
I run N1MM plus MMTTY on Windows 7 for RTTY contesting. I had to get FTDI USB-serial cables to keep things from crashing but once I did that, it works FB. The grab function makes it easy to log for both S&P and running. There are also a lot of mouse click/hover ways of doing it with N1MM that I don't use.

73 John K3TN


Title: RE: USB->Serial Adaptor Frustration
Post by: AA4HA on September 23, 2011, 09:36:16 AM
With the advent of laptop computers that do not support the EIA-232 interface I was forced to go the USB to serial adapter route. I needed it for business reasons as my laptop is also used to program PLC's (programmable logic controllers) and I could not end up at a job site without working serial communications to whatever controller they are using.

I faced the same problem, my personal laptop runs XP, work laptop runs Windows 7 (32 bit) and my home computer runs Windows 7 (64 bit). I sometimes like to take along my TenTec SDR receiver packed in my luggage on business trips so a multi-use adapter was very important.

If you use eBay check out; 250758522510

I am not affiliated in any way with the seller. The adapter they sold me has about two feet of USB cable going to the black modular converter and then another six feet or so of EIA-232 cable. So far it has worked fine on my AOR 8600, TenTec RX-320 and a bunch of commercial communications gear (GE-MDS radios) and PLC's.

It is a little more expensive than the $19.95 specials at a computer store but so far it works fine. Some PLC's are very finicky about how they see handshaking signals (RTS/CTS, DSR/DTR, CD, RI) but this has coped well with them (so far).

-------------------
If you have several serial devices that you want to control you could go with a terminal server like a Digi Edgeport ($300 list for a four port model).

Tisha Hayes
AA4HA


Title: RE: USB->Serial Adaptor Frustration
Post by: KF7CG on September 23, 2011, 11:28:14 AM
The real winner to all this is that the newest desktop computers very often don't support serial or parallel ports any longer. Video and USB are all they have.

KF7CG


Title: RE: USB->Serial Adaptor Frustration
Post by: AD6KA on September 23, 2011, 12:41:42 PM
Quote
If you have several serial devices that you want to control you could go with
a terminal server like a Digi Edgeport ($300 list for a four port model).
Thanks Tisha.
I do have a lot of serial devices & transceivers,
  so that  hub just may the way to go in the long run.
----------------------------------------------------------------------------------------
The real winner to all this is that the newest desktop computers very often
don't support serial or parallel ports any longer.
Video and USB are all they have.
.
True, David. And frankly I don't begrudge them the switch to all USB ports.
.....AS LONG AS ALL USB CABLES & ADAPTERS  WOULD WORK WITH ALL MACHINES!!
With the flood of cheap poorly designed and manufactured chipsets
from China, and no one writing updated drivers for them, the customer is getting the shaft.

I don't mind paying money for quality gear, but the way Ilook at it,
unless you ahve a Pre Win7 machine, buying a USB-Serial Adapter,
no matter WHAT the reputation of the manufacturer, is a crap shoot.

Thanks for the answers, I gotta run & figure out a way in the next few hours
to get on the RTTY test with a decent program..............
73, Ken  AD6KA


Title: RE: USB->Serial Adaptor Frustration
Post by: N4NYY on September 26, 2011, 01:44:00 PM
Ken,

I purchased this for Win 7, because many adapters did not have drivers for Win 7. This did, and has worked flawlessly with HRD 5.0 and my FT-950. Also works with N1MM.


http://www.usbgear.com/computer_cable_details.cfm?sku=USBG-232&cats=106&catid=420%2C482%2C1303%2C199%2C461%2C106%2C1009%2C601 (http://www.usbgear.com/computer_cable_details.cfm?sku=USBG-232&cats=106&catid=420%2C482%2C1303%2C199%2C461%2C106%2C1009%2C601)


Title: RE: USB->Serial Adaptor Frustration
Post by: W8JX on September 26, 2011, 02:58:43 PM

With the flood of cheap poorly designed and manufactured chipsets
from China, and no one writing updated drivers for them, the customer is getting the shaft.


They are not poorly designed just because they have no driver support for WIN 7. A lot of other systems they work with. When you buy a device for WIN 7 read the fine print on package first. 


Title: RE: USB->Serial Adaptor Frustration
Post by: N4NYY on September 26, 2011, 03:47:01 PM
Quote
They are not poorly designed just because they have no driver support for WIN 7. A lot of other systems they work with. When you buy a device for WIN 7 read the fine print on package first. 

I am pretty sure it was Prolific that offered no driver support for Vista and 7.


Title: RE: USB->Serial Adaptor Frustration
Post by: KB6HOH on September 27, 2011, 01:35:49 AM
Hello Everyone!

             De Steve KB6HOH. I am a former CompUSA Computer Tech and Assistant Tech Manager. When employed we saw several issues with various UBS to Serial adapters due to Driver issues. While experimenting with a couple of them I came across one company called Keyspan (Now owned by Tripplite www.tripplite.com).
I currently have the Model USA-19HS. I have used it on Win98se, Win2k, WinXP and now Win7 Ultimate 32bit. Not sure which Chipset it is using but it works just fine. Now for us users of Icom Radios with CI-V CAT Interfaces, the Drivers verses OS can be a problem. Users of Windows XP and earlier can get away with using the Prolific Chipsets BUT not for Windows 7. Windows 7 seems only to like the FDTI Chipset.
A couple of years ago I bought a USB to CI-V Interface Cable off of Ebay. Worked fine on WinXP but failed on Win7. I did find that Radio Shack sells a USB Scanner Program cable for their Scanners.  RadioShack® USB-PC Scanner Programming Cable Model:20-546. This Cable does Support the FTDI Chipset and works very nicely with Win7 Ultimate 32bit and earlier OS's. I don't have Win7 64bit to try it on.
That my 2cents worth.

                                     73 de Steve KB6HOH
 |


Title: RE: USB->Serial Adaptor Frustration
Post by: AA4HA on September 27, 2011, 07:44:56 AM
Quote
If you have several serial devices that you want to control you could go with
a terminal server like a Digi Edgeport ($300 list for a four port model).
Thanks Tisha.
I do have a lot of serial devices & transceivers,
  so that  hub just may the way to go in the long run.
I only mention Digi because I have had experience with them. There are several others of the same (or higher) quality like Moxa and much less expensive devices.


Title: RE: USB->Serial Adaptor Frustration
Post by: AA4PB on September 27, 2011, 11:06:02 AM
Check to see if they have a web site where you can download new drivers. I've had good luck with the FTDI chip set because they have such a web site where you can always get the latest drivers. The CD that comes with the adapter doesn't always contain the latest drivers (probably been setting in a box for a while).

The driver is usually, but not always, the issue. I've run across some adapters that don't implement the control lines correctly and some that are just too slow. When in doubt, I always look for FTDI.


Title: RE: USB->Serial Adaptor Frustration
Post by: AD6KA on September 27, 2011, 10:04:34 PM
Will Do Bob:

I have downloaded a LOT of different FTDI drivers
for this fix, just no luck yet  :)
I have gotten HRD to work with these adapters,
ICOM CI-V, Rigblasters, just not the the HAL DXP-38 using
WriteLog. The RTTY Screen prpgram of WriteLog is called Ritty Rite.,FYI.

I have read through several pages of "Directions"
and "Patches" but I have no idea what most of them even mean,haha.
I figure I'll try to hookup with a local "WriteLog Guru" from their
mailing list or whatever.

Thanks again for all the tips & support.
73,Ken  AD6KA











Title: RE: USB->Serial Adaptor Frustration
Post by: KF7CG on September 28, 2011, 10:09:23 AM
Whatever the chipset and drivers are for West Mountains RB Advantage its USB to serial works with WIN7 64 bit to a FT950 connected to the serial port. The built-in sound card works too.

I think that the USB to serial chipset in the RB is FTDI but I am not positive. Win 7 64 bit is somewhat of a problem with drivers but not nearly as bad as Vista 64 bit.

KF7CG


Title: RE: USB->Serial Adaptor Frustration
Post by: KD4SBY on October 04, 2011, 07:21:31 AM
Unfortunately, Windows 7 does not always has the drivers we need as in XP. It seems that many developers have not yet written the software for it. I found out that many of my programs, which would run in XP, do not run in 7, even when I was running Virtual XP.
I have now a dual boot on my computer, and power up the appropriate operating system when I need it.


Title: RE: USB->Serial Adaptor Frustration
Post by: WA6MJE on October 04, 2011, 08:23:36 AM
I worked my way though the USB cable issues when I migrated from XP, to Vista, and now Win 7 64 bit.  My old eBay cables worked fine on XP, but quit on newer OS systems. I tried the Prolific supposed updated drivers and got nowhere.  For my Icom 7000 I ended up buying the cable (and software) kit from RT Systems (www.rtsystemsinc.com) and it worked fine.  They make memory programming software for most handheld and other rigs, and for each rig they sell the companion cable that goes with it. In other words, instead of a "one size fits all" USB adapter cable, they have a different one for each rig model.  At least that indicates to me they have done some testing on each one of the  radios they support. I bought both the software and cable for my Yaesu handheld, and my Icom 7000 and the cables also worked with other software such as Ham Radio Deluxe, JT65-HF and so on.  The kit was a little pricey, but it worked, and their programming software works well also.  The cables install on Windows 7 with Microsoft supplied (built in) drivers no problems. I am over the hump, at least until Windows 8.


Title: RE: USB->Serial Adaptor Frustration
Post by: KQ6EA on October 04, 2011, 08:01:55 PM
I agree 100% with KB6HOH.
I use Keyspan devices exclusively now, after having been through Driver Hell with other brands.
And they have an excellent 4-port hub for well under the $300 of the other one somebody posted about.
Jim


Title: RE: USB->Serial Adaptor Frustration
Post by: KC9QVL on October 04, 2011, 09:11:46 PM
This usb to rs-232 adapter from Frys uses the FTDI ft232r chip. It has operated any serial device plugged into it. Running win 7 64 bit.
http://www.frys.com/product/5229677?site=sr:SEARCH:MAIN_RSLT_PG (http://www.frys.com/product/5229677?site=sr:SEARCH:MAIN_RSLT_PG)
You can find it in the component section.


Title: RE: USB->Serial Adaptor Frustration
Post by: KM3K on October 11, 2011, 06:46:48 PM
Keyspan.....bad news there with Vista; literally hours and hours were wasted trying to get it to work with the latest, up-to-datest drivers downloaded right from the manufacturer's website.
I even repeated the downloads several times just in case I had a bad download.
In a desperate move, I went to a Radio-Shack USB-to-RS232 adapter and it worked first try.
73 Jerry km3k


Title: RE: USB->Serial Adaptor Frustration
Post by: WA4GIF on February 06, 2012, 01:01:47 PM
The best thing I ever did was to buy a 4 port serial board for my computer! I had it up to here! You can see my hand over my eyes! I always had trouble with the Prolific so bought the FTDIs and it worked until it got trashed somehow. I bought the 4 port serial board from Amazon (really imported from China) for $22 and it works great. No more problems  :)

Regards,

Butch - WA4GIF


Title: RE: USB->Serial Adaptor Frustration
Post by: KM3K on February 06, 2012, 03:38:11 PM
I bought the 4 port serial board from Amazon (really imported from China) for $22 and it works great. No more problems
I'd like to get one for my new HP-tower.
Just now, I was unable to find any $22 card from Amazon; if you can, please supply a company/part-number. Thanks.
73-Jerry-km3k


Title: RE: USB->Serial Adaptor Frustration
Post by: G4AON on February 07, 2012, 01:38:42 AM
Just now, I was unable to find any $22 card from Amazon; if you can, please supply a company/part-number. Thanks.
73-Jerry-km3k

Have you checked eBay? There are a lot of cards listed (over 300 in the USA alone). If you do a search for RS232 PCI card, tick "USA only" and "buy it now" there are quite a few to pick from. One example is item number 150685840353 at less than $21 delivered.

You will of course have to check your motherboard for suitable slots, etc.

73 Dave


Title: RE: USB->Serial Adaptor Frustration
Post by: WA4GIF on February 09, 2012, 01:34:00 PM
Sorry it wasn't Amazon, it was eBay where I purchased it:

http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=170744713151

Qty Item Options Price
1 4 RS-232 Serial Port COM to PCI-E Card Adapter MOSCHIP
Item # 170697247882   $22.98 USD
 
They really did offer free shipping as well as the $22.98 is all that I paid.

By the way, it works just great and now I don't worry about disconnects or anything anymore! :)

Butch - WA4GIF


Title: RE: USB->Serial Adaptor Frustration
Post by: KD4SBY on March 03, 2012, 07:04:03 AM
I too had problems with drivers for many of my older programs using my new computer running Windows 7. I solved it by having two hard drives in the computer, one running my old trusty XP OS, and the other Windows 7. I can select either system by throwing a switch in the back which powers only the one HD chosen. It is like having two computers in one. (I preferred using this method above a dual boot system; it separates the two OS's completely)
Since Windows 7 is no longer DOS based, many of my older programs would not work with 7, even Virtual XP would give me fits.
Now I can use which ever OS will work with the drivers available.


Title: RE: USB->Serial Adaptor Frustration
Post by: W8JX on March 03, 2012, 09:15:07 AM
I too had problems with drivers for many of my older programs using my new computer running Windows 7. I solved it by having two hard drives in the computer, one running my old trusty XP OS, and the other Windows 7. I can select either system by throwing a switch in the back which powers only the one HD chosen. It is like having two computers in one. (I preferred using this method above a dual boot system; it separates the two OS's completely)
Since Windows 7 is no longer DOS based, many of my older programs would not work with 7, even Virtual XP would give me fits.
Now I can use which ever OS will work with the drivers available.

Actually if you virtualize  properly it is much better than a clunky dual boot these days. With a  modern fast dual core or quad core CPU and 6 gig or more of ram and 64 bit Vista or Win 7 you can painlessly run a few different OS's at same time with 64 bit as the host. These virtual OSes will operate like they are actually in control of computer. The hamstring a modern 64 bit system to 32 bit XP as a primary OS is really pretty foolish.


Title: RE: USB->Serial Adaptor Frustration
Post by: AH6RR on March 03, 2012, 10:17:52 AM
Sorry it wasn't Amazon, it was eBay where I purchased it:

http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=170744713151

Qty Item Options Price
1 4 RS-232 Serial Port COM to PCI-E Card Adapter MOSCHIP
Item # 170697247882   $22.98 USD
 
They really did offer free shipping as well as the $22.98 is all that I paid.

By the way, it works just great and now I don't worry about disconnects or anything anymore! :)

Butch - WA4GIF

 The one I bought off eBay for my computer is a 4 port PCI-e Mos-chip and was only 12.00 shipped from Hong Kong and it works great with my Windows 7 Ultimate 32bit. I run my G4ZLP Kenwood TTL to RS232 cable, a home-brew FSK/CW interface and a SteppIR control box on it with out a hitch.  My computer is a Dell XPS 410 with a Core-Duo and 4 gigs of memory 3 Hard drives (2 in a Raid configuration and a 1 tetra-bite with 2 partitions for storage and backup I also have a 500gig external drive for a backup backup. So if anything ever fails I have all my data to restore the computer and most important my log book and other very important data. And I never have to store my data off site like the Cloud ect that can be compromised.

Roland AH6RR


Title: RE: USB->Serial Adaptor Frustration
Post by: KD4SBY on April 15, 2012, 11:12:31 AM
This again an example of "new is not always better". I had same problems with trying to get drivers when upgrading to 7, and I got so sick of it, that I purchased a new 300GB HD, put a selection switch in the power supplies of the now 2 HDs, put XP on one, 7 on the other, and use now either system that works with what I want to do with a flip of the switch.
End of frustration of trying to get a driver for one of the systems! Use an external, USB driven HD and the data on it is available to both systems.
It may be  the best solution to some problems you may have with programs in Widows 7 and their drivers!


Title: RE: USB->Serial Adaptor Frustration
Post by: KM3K on April 18, 2012, 06:48:57 PM
Sorry it wasn't Amazon, it was eBay where I purchased it:
http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=170744713151
Qty Item Options Price
1 4 RS-232 Serial Port COM to PCI-E Card Adapter MOSCHIP
Item # 170697247882   $22.98 USD
They really did offer free shipping as well as the $22.98 is all that I paid.
By the way, it works just great and now I don't worry about disconnects or anything anymore! :)
Butch - WA4GIF
Hello Butch WA4GIF,
I need to ask, "Are you using this card with 64-bit Windows7?"
Hopefully, the answer is yes because I'm ready to buy it.
73 Jerry KM3K


Title: RE: USB->Serial Adaptor Frustration
Post by: STAYVERTICAL on April 21, 2012, 06:55:19 AM
It is all about the drivers, not the chipset itself. Any adapter you have had for several years is not likely to support Win7 unless that same adapter is still in production and drivers have been updated. I buy them by driver support not by chipset.

Right on the money.

Have been using two prolific chipset (genuine not counterfeit) USB-serial adaptors for five years over winXP and now Win7.
They never work until I load their drivers, then all goes well.
Also, not all drivers are created equal.
Some work, sort of, and make it look like the hardware is flaky when its the driver at fault.
Remember these drivers interface at a low and privileged level in the operating system.
Video generic graphic drivers are a case in point which are familiar to many users, USB-serial drivers are just another case.
Luckily serial adaptors are pretty inexpensive, but check the box for win7 compatibility and make sure you can return it
if it doesn't work.

This is the scary thing about USB (and other) hardware.
Some day your hardware is going to be unusable because no one bothers to write a driver for a new OS version.

Good luck and 73s.



Title: RE: USB->Serial Adaptor Frustration
Post by: AA4PB on April 21, 2012, 08:18:16 AM
One thing I look for is "Microsoft Certified Drivers". This means that they have been tested to Microsoft specifications and, in addition to working, will not cause any stability problems with the operating system. I've had virtual serial port drivers that intermittently caused computer lock ups and blue screen of death, even when the driver was not being used by any programs.

If a driver is not "Microsoft Certified" then you will get a warning message when installing them. FTDI has certified drivers for their chip sets.


Title: RE: USB->Serial Adaptor Frustration
Post by: KM3K on April 21, 2012, 10:20:24 AM
One thing I look for is "Microsoft Certified Drivers". This means that they have been tested to Microsoft specifications and, in addition to working,....
The USB-to-RS232 adapter Keyspan-19HS had a "Microsoft Certified Driver", yet it would not work my AIM4170 but a Radio-Shack Gigaware adapter did. Consequently, I have little confidence in "Microsoft Certified Drivers".
73 Jerry KM3K


Title: RE: USB->Serial Adaptor Frustration
Post by: KM3K on April 21, 2012, 10:29:58 AM
Sorry it wasn't Amazon, it was eBay where I purchased it:
http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=170744713151
Qty Item Options Price
1 4 RS-232 Serial Port COM to PCI-E Card Adapter MOSCHIP
Item # 170697247882   $22.98 USD
They really did offer free shipping as well as the $22.98 is all that I paid.
By the way, it works just great and now I don't worry about disconnects or anything anymore! :)
Butch - WA4GIF
Hello Butch WA4GIF,
I need to ask, "Are you using this card with 64-bit Windows7?"
Hopefully, the answer is yes because I'm ready to buy it.
73 Jerry KM3K
Just to follow-up here, I did a Google search on the MOSCHIP advertised as being used in this card and found a claim that it handles Windows7/64-bit.
So, I have ordered the card and received conformation that it has been shipped with delivery in early May.
Thus far, I've had good success on items shipped from China; I hope this order continues the success story.
73 Jerry KM3K


Title: RE: USB->Serial Adaptor Frustration
Post by: NO9E on April 25, 2012, 08:28:46 AM
I used to have a number of USB-serial adapters. I was able to find drivers for all of them. But:

2 adapters fried, perhaps as an effect of lighting.

two were always failing at QRO

one failed at QRO occassionally, usually when I was running a  pileup in contest. Resetting worked but a few QSOs and sometimes the frequency were lost. 

Some raise noise floor by 20db.

A serial card is coming today.