Re: [Elecraft] Advice needed: Remote Station Enhancement

I do miscellaneous switching chores at my remote station with two devices: a remotely-controlled AC power strip and a remotely-controlled DC relay board. Either could be adapted to your requirements IF your switch has digital inputs such as four independent control lines. I don't know if either of

Re: [Elecraft] Advice needed: Remote Station Enhancement

Hi Dennis. Have you checked what is available here: http://www.remoterig.com/wp/ 73, Yngvi TF3Y On Wed, Mar 7, 2018 at 1:30 AM, Dennis Ashworth wrote: > My original post (below) morphed into a thread on standards, etc ... the > discussion was insightful and useful

[Elecraft] Advice needed: Remote Station Enhancement

My original post (below) morphed into a thread on standards, etc ... the discussion was insightful and useful in defining my solution to question #1 below. Thanks. Question #2 remains. How do I remotely switch between 4 positions on an RX antenna switch (e.g. K9AY switch box) via some kind of

Re: [Elecraft] Advice needed: Remote Station Enhancement

It's great to say what should have been done, particularly when the original design is 35+ years old (Yaesu transceiver/FL-7000). It is not practical to make a change to all the legacy hardware so any equipment supporting Yaesu format "Band Data" needs to be designed to be +12V tolerant and any

Re: [Elecraft] Advice needed: Remote Station Enhancement

Right on Don. 73, Fred KE7X From: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> on behalf of Don Wilhelm <donw...@embarqmail.com> Sent: Friday, March 2, 2018 5:19 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] A

Re: [Elecraft] Advice needed: Remote Station Enhancement

I believe that logic can quickly merge into the idea that "the first to introduce BCD Band Data" will "set the standard". I for one do not believe that is the best approach, and certainly not sufficient to 'set a standard', which may have serious flaws when extended beyond that manufacturer's

Re: [Elecraft] Advice needed: Remote Station Enhancement

As far as older Yaesu transceivers are concerned, their design is proprietary and cannot be brought into the mold without serious converters (which should frankly be easily constructed by the serious amateur). Yaesu's transceivers were the *first* to use BCD "band data". As such, it should

Re: [Elecraft] Advice needed: Remote Station Enhancement

Actually, we're talking about exactly the same thing. I should have included tags. Sorry for the omission. On 3/2/2018 2:03 PM, Jim Brown wrote: On 3/2/2018 1:48 PM, Lynn W. Taylor, WB6UUT wrote: The nice thing about standards is that there are so many to choose from. Actually, what we're

Re: [Elecraft] Advice needed: Remote Station Enhancement

On 3/2/2018 1:48 PM, Lynn W. Taylor, WB6UUT wrote: The nice thing about standards is that there are so many to choose from. Actually, what we're describing here is the LACK of a Standard -- each company decided in isolation how to implement things like this. I serve on the Standards

Re: [Elecraft] Advice needed: Remote Station Enhancement

The nice thing about standards is that there are so many to choose from. 73 -- Lynn On 3/2/2018 1:43 PM, ab2tc wrote: My main point is that the amateur community should move towards following the "standard". If all devices followed that "standard" they would all work together and there would

Re: [Elecraft] Advice needed: Remote Station Enhancement

Hi all, Of course this assumes that the sole transmitter on the bus obeys the rules as well, which is to be an open collector or open drain (or relay contact to ground). I am sorry if I omitted that point. As far as older Yaesu transceivers are concerned, their design is proprietary and cannot

Re: [Elecraft] Advice needed: Remote Station Enhancement

If all receivers on the bus (yes, it is a bus) were to obey the rules to have a pullup resistor and a steering diode we would not have the problem of "false power" to devices on the bus. Of course, they would fail to work with older Yaesu transceivers that source voltage for a logic high and

Re: [Elecraft] Advice needed: Remote Station Enhancement

Knut, This has been a "corruption" of the RS-232 environment. RS-232 is a point to point protocol, and too many ham applications have tried to turn it into a multi-point communication. It just does not work. Multiple receivers will work, but multiple drivers will not. It all boils down to

Re: [Elecraft] Advice needed: Remote Station Enhancement

Hi all, I was reluctant to respond again to this long thread, but I will. If all receivers on the bus (yes, it is a bus) were to obey the rules to have a pullup resistor and a steering diode we would not have the problem of "false power" to devices on the bus. This would be proper engineering

Re: [Elecraft] Advice needed: Remote Station Enhancement

With todays microelectronics, false powering can occur with little current, perhaps a milliamp or less, definitely less than that required to drive the LED of an optoisolator. Voltage levels required are quite low, depending on the design. As low as 2 volts can do the trick, and at that level

Re: [Elecraft] Advice needed: Remote Station Enhancement

On 2/28/2018 8:19 PM, Jack Brindle wrote: It makes me wonder if perhaps the old Yaesu method should be retired > and no longer used. If you're willing to purchase/replace all the pre-1990 Yaesu transceivers still in use . Either they get frustrated because the connection doesn’t work and no

Re: [Elecraft] Advice needed: Remote Station Enhancement

There is a big problem with this, one that was unusual when Yaesu first created this setup, but very common now. The issue is that of false powering of receiving devices. In this day of low power micro controllers and other digital devices, the device can actually be powered through the I/O

Re: [Elecraft] Advice needed: Remote Station Enhancement

On 2/28/2018 12:42 PM, Don Wilhelm wrote: So are you advocating that all manufacturers of ham gear should adopt the Yaesu implementation as a "standard"?  Icom, Kenwood, Flex and Elecraft may have other thoughts. Yes, if another transceiver manufacturer chooses to emulate Yaesu's protocol

Re: [Elecraft] Advice needed: Remote Station Enhancement

So are you advocating that all manufacturers of ham gear should adopt the Yaesu implementation as a "standard"?  Icom, Kenwood, Flex and Elecraft may have other thoughts. 73, Don W3FPR On 2/28/2018 11:15 AM, Joe Subich, W4TV wrote: > THe point is that the two do not work together. The

Re: [Elecraft] Advice needed: Remote Station Enhancement

> THe point is that the two do not work together. The point is that the devices don't work together because the third party manufacturers did not bother to understand the Yaesu design and take the necessary steps to be compatible. Yaesu's only purpose was to provide band switching data from

Re: [Elecraft] Advice needed: Remote Station Enhancement

Joe, You do admit that many amateur products do not conform to typical communications standards in the digital world. My experience does go back to my design and evaluation of IBM terminal communication between a DCE and a DTE device.  Although this was not necessarily RS-232 levels, the

Re: [Elecraft] Advice needed: Remote Station Enhancement

You're dealing with a "standard" that was originally developed for use only within one company's products - much like Elecraft's Aux Bus. As such, any "industry standard" is moot. The design is for active high/voltage source (to +12V originally) and was not intended for any purpose than

Re: [Elecraft] Advice needed: Remote Station Enhancement

The problem is that most devices (in the ham world) expect the driver device to provide voltage. In the communications (non-ham) world, the expectation is that the driver device produces either a logic low (short to common) or a logic high ( open circuit). Look at the data sheets for "line

Re: [Elecraft] Advice needed: Remote Station Enhancement

> But many (most) ham devices do not do it that way, they expect the > pullup resistors will be provided by the driver gear. Actually, most devices that use BCD "band data" expect an open emitter driver not an open collector driver. Open emitter will *source* voltage for logic high and be open

Re: [Elecraft] Advice needed: Remote Station Enhancement

Knut, That is the way it *should* be, and was that way in the K3 originally. But many (most) ham devices do not do it that way, they expect the pullup resistors will be provided by the driver gear. So, because of that, Elecraft added pullup resistors to the band data outputs of the K3 long

Re: [Elecraft] Advice needed: Remote Station Enhancement

Hi Don and all, Hear,hear, Don. The receivers should have the pullup resistor to whatever the appropriate voltage needed (within reason) *and* a steering diode in series with the input. This will prevent another device with a higher voltage from feeding current back into the device which could

Re: [Elecraft] Advice needed: Remote Station Enhancement

John and all, This is a problem caused by the "way things work". The original K3 did not have pullup resistors on the band data lines (correct by engineering practices, the pullup resistors should be in the receiving device). BUT as a concession to those band decoders did not implement pullup

Re: [Elecraft] Advice needed: Remote Station Enhancement

I had difficulty with the Unified Microsystems BCD-14, i.e. the CMOS inverter IC was overheating. I eventually received the following advice from AB3CV, which I found to work. -John AC6SL From: Jim Miller Date: Sat, Dec 26, 2015 at 7:06 PM Subject: Re: [Elecraft] K3 and

Re: [Elecraft] Advice needed: Remote Station Enhancement

you need their high side driver board also. Ken K6MR From: Jack Brindle Sent: Sunday, February 25, 2018 14:42 To: Reflector Elecraft Subject: Re: [Elecraft] Advice needed: Remote Station Enhancement Interesting idea, but I would talk to N6TV before going too far down this path. The reason

Re: [Elecraft] Advice needed: Remote Station Enhancement

ys, with ground/signal on each twisted pair. > > > Dave Hachadorian, K6LL > Yuma, AZ > > > -Original Message- > From: Dennis Ashworth > Sent: Sunday, February 25, 2018 2:50 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] Advice needed: Remote Sta

Re: [Elecraft] Advice needed: Remote Station Enhancement

, with ground/signal on each twisted pair. Dave Hachadorian, K6LL Yuma, AZ -Original Message- From: Dennis Ashworth Sent: Sunday, February 25, 2018 2:50 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Advice needed: Remote Station Enhancement I’ve been remoting my K3, KPA500, KAT500

Re: [Elecraft] Advice needed: Remote Station Enhancement

Are you sure the KPA1500 will not be able to tune your antennas? It includes a tuner, and I would expect it to be capable. I have been using Arduinos to control things, as they have lots of I/O and appear to the computer as a USB serial port. Those serial ports can be remoted via software,

[Elecraft] Advice needed: Remote Station Enhancement

I’ve been remoting my K3, KPA500, KAT500 station via the RemoteRig boxes and K3/0 mini for two years with solid results. Later this year, I want to make several enhancements, including the replacement of the KPA500 and KAT500 with a KPA1500. The amp/tuner should be a fairly straightforward