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Re: Frequency programming keypad
开云体育Hi AlWhen I enter CHIRP in the App Store all I get is related to birds! Is CHIRP the full name? 73 Peter P Burnett On 14 Aug 2024, at 17:16, Al WB9UVJ <markaren1@...> wrote:
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Peter Burnett G4BLL |
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Re: Frequency programming keypad
Dave,
You will be much happier using CHIRP than a separate keyboard.? This free software allows you to assemble memory input like a spread sheet.? It allow for naming (limited by the FT817/818 display length) frequency, offset and subtones.? You can also move entries around as you see fit for memory location.? I have entered all the frequencies for FT-8, VHF and UFH repeaters and my favorite bands as well as WWV and my local airport frequencies so my grandchildren can listen to traffic while we sit on the fenceline at the airport.
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Al Skierkiewicz WB9UVJ |
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Re: Frequency programming keypad
Thanks to all for the information.? I did look on the internet and found several keypads.? None of these devices are being made now.? I think I'll look into one of the kinda cheap Chinese import radios with direct frequency input if I can find one.? I'm really only interested in a receiver.? It's a shame to get rid of the 817 but the new sdr radios offer so many more features than the Yaesu.? Progress, I guess.? Thanks again.? Dave On Tue, 13 Aug 2024 at 22:33, Clyde Lambert via <clyde.lambert=[email protected]> wrote:
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Re: Frequency programming keypad
开云体育I don’t know if they are even still available but have a look at the Millenium QSYer. ? 73….Eric VK2VE. ? From: [email protected] <[email protected]> On Behalf Of Dave Martin
Sent: Wednesday, August 14, 2024 5:20 AM To: [email protected] Subject: [ft817] Frequency programming keypad ? Does anyone make a keypad for 817?? I think bhi did at one time but it's not shown on their website now.? Dave |
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Re: Frequency programming keypad
开云体育FYI, our SideKar Decoder Edition interfaces with the 817 / 818 and allows you to change frequency and mode from a wireless keyboard. Plus you can send 20 user-defined CW messages (80 characters each) and log 1000 QSOs, with ADIF file export.? Since it's talking to the 817 / 818, it auto-populates the freq and mode, plus the date and time (has its own real-time clock).? It'll decode CW and allow you to send CW from the keyboard, from stored messages, or a paddle, with the keyer speed and mode controlled from the keyboard.? The full manual is online should you care to check it out.? https://www.qrpworks.com/manuals.html 73,? Shel KF0UR? QRPworks.com |
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Re: Self destruct finals
开云体育About $40 USD ? From: [email protected] <[email protected]> On Behalf Of ZL2ALW via groups.io
Sent: Tuesday, August 13, 2024 7:35 PM To: [email protected] Subject: Re: [ft817] Self destruct finals ? Hi Peter, and all. I found this as it is in Europe it could fix your problem. Regards Andrew Barnett ZL2ALW |
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Re: Frequency programming keypad
开云体育It should be fairly trivial to take a keypad and a micro-controller (RPi Pico?) and have it read the keypad and shoot the proper command to a radio over a serial port connected to a radio's cat port...Ken, N2VIP On Aug 13, 2024, at 16:51, Scott McDonald via groups.io <Ka9p@...> wrote:
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Re: Frequency programming keypad
Scott McDonald
开云体育Dave,Your note reminded me that I have box on the shelf that appears to have 4 vintage ?assembled Universal QSYers and one unassembled kit. ?If that model seems like something you’d use feel free to ping me direct. ?I used to use them on my pair of original 817s to set up satellite freqs when the boxes were novel but haven’t used them in years. 72 Scott ka9p Make something good happen! On Aug 13, 2024, at 2:30?PM, Dave Martin <kc7nj73@...> wrote:
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Re: Blown final club? I think I have a membership
Average Ham does not mean much these days.? Most repair of Ham gear is not that hi-tech.? Yaesu hires high school drop outs to do it.
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And replacing the FT817 PA finals on the is not that difficult.? If think so no you should not be inside the radio.
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Once when my finals blew, I did order and install the PA board.? But when the finals died so did the driver transistors on the main board. SMTs, easy job to replace once got the parts.? Do need the right tools, mainly a very small pencil iron and small solder, not 035".? I have just such an iron I use for SMT with 0.050 pins.
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73, ron, n9ee |
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Re: Frequency programming keypad
开云体育What is the app? Assume it's Pocket RxTx? How does the app control the radio? Wired or wireless? Looks like the idea is to use a cat cable & usb OTG adapter I think the OP was looking for something to use in the field to punch in frequencies, as if the radio had a keyboard on the front of it, this is a bit more than that... Ken, N2VIP On Aug 13, 2024, at 15:13, davebb123456 <davidbrowne76@...> wrote:
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Re: Frequency programming keypad
You could always use a android phone/tablet Ptxrx lite app,free of charge, Dave On Tue, 13 Aug 2024, 20:59 Peter Burnett via , <g4bll.peter=[email protected]> wrote:
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Re: Frequency programming keypad
开云体育Hi DaveBHI no longer manufacture that unit it was called a “Radiomate” I have one but it is not working properly, no beeps. I bought it on eBay and I have seen another one come up recently.? G4BLL P Burnett On 13 Aug 2024, at 20:30, Dave Martin <kc7nj73@...> wrote:
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Peter Burnett G4BLL |
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Re: Frequency programming keypad
I'm interested as well. Years ago there was a small company called Stone Mountain Engineering making them and I have to say that they're a wonderful device. A friend told me a long time ago it could be done with an eprom. Maybe there's another way now.
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Joe N1KHB?
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Re: Blown final club? I think I have a membership
The FT817/818 charge circuit would not really cause issues if "overcharging". The radio is built for NiCD / NiMH cells and the charging regime is 14 hours times 0.1C, so 14 hours times 10% of the capacity of the cells. The "fourteen times 10%" is to make up for losses in the charge / discharge process; "ten times 10%" would charge the cells but the process has losses. Hence 14 hours.
However, NiCD cells no longer exist (environment!), and NiMH cells have grown in technology. I think the original packs had a capacity of roughly 700 mAH, so a charge current of 70 mA. Today's cells are often closer to 3000 mAH, and hence a 70mA charge current won't charge the cell in 14 hours, you need much more than that. ?
With a low charge current like this, "overcharging" won't affect the cells unless you do it continuously. The cells will dissipate the energy they can't store. They get warm, but not hot. The amount of energy is not very high.
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The charge circuit is just a current source. If you look at the schematic, it is Q1103 with R1435 defining the charge current and Q1101 enabling the circuit.
There is a second charge circuit, Q1105 and R1436 with Q1102 enabling. This is a trickle-charge as NiCD/NiMH are known to self-discharge. The "green wire" disables both charging circuits (charge and trickle) which is just as well because trying to charge alkalines is likely to cause them to leak. I have changed R1435 to match my cells; you will need to revise yourself if you want to do this, and please mind the dissipation and max Ic for Q1101 and Q1103; I have not blown my finals but I *have* blown the charging circuitry at some time. To add, the FT817/818 doesn't charge 14 hours, but selectable 6-8-10 hours. The result is that even a 10-hour cycle won't get close to charging them modern high-capacity NiMH cells and two cycles won't hurt the cells. We're not talking "ultra-speed 30 minute fill charge", the battery chemistry is 30 years older. |
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Re: Self destruct finals
On Tue, Aug 13, 2024 at 01:01 PM, Peter Burnett wrote:
This has only served to convince me that my old 817 receiver will remain just that.I am pretty sure if you call Yaesu UK they will be able to sell you a FT818 output module that will fit your FT817 and it won't mortgage your house. The techs are pretty nice to work with. |
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Re: Self destruct finals
开云体育Thanks for highlighting the full extent of what’s involved here Geert. I watched a video on UT which covered the physical aspects of replacing the finals but didn’t go in to the re-setting necessary. This has only served to convince me that my old 817 receiver will remain just that.?Cheers 73 Peter P Burnett On 13 Aug 2024, at 11:32, Geert Jan de Groot via groups.io <pe1hzg@...> wrote:
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Peter Burnett G4BLL |
Al WB9UVJ
Clyde Lambert
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