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Community Support => General Support => Topic started by: k9dbv on November 29, 2017, 08:19:06 am

Title: Yaesu-FT-891
Post by: k9dbv on November 29, 2017, 08:19:06 am
I am thinking about asking Santa to bring me a Yaesu ft-891. Not that I need one as I already  have a remote capable FTdx-3000, FT-991(with help from Roger on both) and I even managed to remote my FT-2000 via a SCU-17 by myself.
I
It appears I can also use the SCU-17 with the FT-891. My question is:  would the server software have to be tweaked to accommodate the 891 or should the server software work as is by perhaps identifying the radio as one of the Yaesu models currently on the list???

I am not interested enough in remoting the 891 if  server software changes would be needed.
Title: Re: Yaesu-FT-891
Post by: w8rj on November 29, 2017, 09:31:29 am
Haven't gotten around to adding the 891 to the driver. If you get one from Santa, let me know and I can get it added fairly quickly.
Title: Re: Yaesu-FT-891
Post by: oh4ubb on November 30, 2017, 01:55:44 am
I also am interested in FT-891 remote control. Thanks! I already have this nice radio.
73 oh4ubb
Title: Re: Yaesu-FT-891
Post by: k9dbv on January 09, 2018, 11:22:03 am
Santa left me a Yaesu ft- 891 and I'm contemplating making it RemoteHams capable with the Yaesu SCU-17 I have. Yaesu tech support says I need to interface via the front panel mike jack. I'm exploring feasibility of using rear panel data connector(?)

Also a driver for the 891 would be required. Would that be part of the server software??

This is not a high priority project for me as I have 3 other remotehams capable rigs. The 891 would be a back-up for my 991 So if  a driver involves a lot of effort or time and I'd be the only one using it don't bother . Thanks! K9DBV terry
Title: Re: Yaesu-FT-891
Post by: w8rj on January 09, 2018, 11:59:22 am
Adding the 891 is on my to do list. I'll let you know when I am ready to test it.
Title: Re: Yaesu-FT-891
Post by: ok1dwq on January 25, 2018, 02:43:53 pm
Adding the 891 is on my to do list. I'll let you know when I am ready to test it.

wil be nice to have a driver for me also, because my wife bought today me this one to install it at our 2nd house. I'll keep my fingers to be this task on top of your ToDo list.
Title: Re: Yaesu-FT-891
Post by: w5rhr on February 13, 2018, 11:03:37 am
One more vote to add the 891 please?
Title: Re: Yaesu-FT-891
Post by: dl5mgd on March 19, 2018, 11:23:18 am
One more who owns a ft 891 and want to use  it.
Title: Re: Yaesu-FT-891
Post by: w8rj on March 25, 2018, 12:08:01 pm
The FT-891 has been added to the server..

http://download.remotehams.com


Title: Re: Yaesu-FT-891
Post by: ac7av on April 02, 2018, 08:32:57 am
Hi Roger, I was talking with K9DBV yesterday, he is having trouble getting the 891 to key threw the USB connection.  Since you know the programing that it takes to make it work, can you tell us if the radio can be keyed threw the computer interface USB or not? 

Thanks
Erik
Title: Re: Yaesu-FT-891
Post by: w8rj on April 02, 2018, 09:18:26 am
It depends on where he is feeding the audio to. If he's feeding the audio to the front microphone, then he should be using the TX button. If he's feeding audio to the data connector on the back he should be using TXd button.

Both cases the PTT should be via CAT unless he's using a sound card interface that needs something else.

FYI, the USB connection to the 891 just carries CAT commands, it does not have audio capabilities.
Title: Re: Yaesu-FT-891
Post by: k9dbv on April 04, 2018, 05:35:07 pm
My 891 is still a work in progress. I have the server software loaded on one windows laptop and run the client on a 2nd laptop.
Recieve gets to the client via a cable from the 891 earphone jack to the mike input of the server laptop. Receive on client sounds good.
I can key the 891 from the client via TX (didn't notice TXD as a choice in server set-up)

My problem is hum/buzz on xmit audio. (xmit into dummy load, monitor on FT-dx3000). My connection for audio from client to 891 is via a cable from server laptop earphone jack to the 891 mike  connector. Using a Heil mike I/f cable to connect to modular mike input.
hum is strong enough to output 100 watts when not talking. I've determined it originates with the server laptop by turnig off the client laptop and keyng up at the xmtr. If I disconnect the cable at server pc or leave it connected and turn the PC off the hum goes away.

I also loaded 891 server on wifes laptop with same results. These cheaper laptops don't offer more than earphone jack to connect to audio.
I'm considering ordering a male DIN connector and making up a cable to i/f audio connectios via 891 rear panel data jack. I've played around with grounding, cabling, floating grounds, ferrite chokes, with no results.

I'll let you know how I make out. Any sugguestions are welcome.
Title: Re: Yaesu-FT-891
Post by: w8rj on April 05, 2018, 04:56:14 am
You can not just connect a sound card direct to a radios microphone connector. There has to be an isolation transformer. That's where your hum is coming from.
Title: Re: Yaesu-FT-891
Post by: oh4rl on April 09, 2018, 04:05:36 am
Is this good enough?

http://www.g4zlp.co.uk/unified/USB%20Isolator.htm

Title: Re: Yaesu-FT-891
Post by: w8rj on April 09, 2018, 07:05:01 am
That is not what you need. You need audio isolation from the sound card. A 1:1 (600:600 Ohm) transformer is all you need. Something as basic as West Mountains Nomic would suffice. You would just use the audio isolation transformer, not the serial port.

The unit you linked to may be of some help in making sure RF doesn't get back into the computer, but it's not going to help your hum problem.
Title: Re: Yaesu-FT-891
Post by: oh4rl on April 09, 2018, 10:50:52 am
Does it help if I am using external USB Sound Card and isolate it? I am using laptop.
Title: Re: Yaesu-FT-891
Post by: w8rj on April 09, 2018, 10:57:31 am
No. An isolation transformer needs to be between the sound chip and the radio. Not between the computer and the sound chip.
Title: Re: Yaesu-FT-891
Post by: oh4rl on April 09, 2018, 10:36:57 pm
OK.

Thank you for your professional answer.

73
Pertti
Title: Re: Yaesu-FT-891
Post by: k9dbv on April 13, 2018, 06:57:25 am
FYI...I ordered some connectors and an audio isolation xfmr (SKU 23-148-001) from Showmecables.com on 5 April. Was told everything was in stock. Yesterday I received the connectors but no xfmr. Told me it was on back order. Bummer! I removed my 891 from the lobby list.  Will add again when I get it perfected.
Terry K9DBV
Title: Re: Yaesu-FT-891
Post by: oh4rl on April 14, 2018, 03:12:42 am
Hi,

Whether this is an audio transformer that is connected to a microphone line.

http://store.calradstore.com/10-78.html



Title: Re: Yaesu-FT-891
Post by: w8rj on April 14, 2018, 04:42:40 am
Appears to be.
Title: Re: Yaesu-FT-891
Post by: k9dbv on April 18, 2018, 08:33:19 am
My audio isolation xfmr finally arrived and that took care of the hum problem. Thanks for the advice Roger. After working with three laptops, all with different headphone and mike configurations, I finally found the right combination of connectors and cables and managed to get the multitude of controls affecting audio levels looking ok and made several contacts. Setting the 891 for remote operation made me more fully appreciate the usb "only" cable  hookup of my FT 991 & FT3000

Whats this error message trying to tell me? Only shows up while transmitting.
"the given key not present in the dictionary. command--FA007258000. also FB008268000. Thanks! Terry K9DBV
Title: Re: Yaesu-FT-891
Post by: w8rj on April 18, 2018, 09:58:25 am
Not sure what would cause that message regarding a frequency command. Try reducing the power to a minimum and see if it's an RFI issue. If it goes away then you'll have to track down where the RF is getting into the system.

Here are a few tips on RFI
http://www.remotehams.com/forums/index.php/topic,2150.0.html