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FT-980 Used with a transverter - frequency display to suit VHF / UHF band

Phil VK4KW / VK4BAA All Messages By This Member #74 Hi All. I'm new here, so be kind.......? ? 8-) I've got two 980s - one of them was my first solid state rig, bought new in the mid-80s and the other is a donor rig I got hold of for a song some 20 years ago. I seem to remember that when the rig is set to the 10m band, and certain pins are taken to GND on the ACC1 socket, the frequency display could be made to display 50 / 144 / 432 etc as the 10m band was traversed in 500KHz jumps. The rig stayed on 10m, but displayed the desired transverter frequency 'band'. I cannot find this info documented anywhere however. I seem to remember reading about it in an RSGB RADCOM magazine (probably within the review of the 980 by G3SXJ I think his call was) but even then I don't recall a source for the info being stated. I can't see anything mentioned in the 980 manuals...... Does this ring any bells with anyone or have I been sniffing the PCB degreaser a bit too much.....? 73, Phil Smeaton G0HSS / VK4BAA / VK4KW
Fred, N8YX All Messages By This Member #75 Phil, You can do this from the front panel by selecting the "Key -> V/U" buttons. I have an FTV-901R that's been modified by Yaesu to work with the '980 and IIRC it toggles those lines as its band switch is moved. (Would hook them up and try an experiment but the transverter is stored away at the moment). The FT-980 Technical Supplement provides info on which lines are used with a transverter for frequency display. I'd given some thought to rewriting the firmware and adding our 222 and 902MHz allocations to the available selections if space permits. 73 - Fred, N8YX
Roger VE7LB All Messages By This Member #76 Phil, You were right on about the RSGB RadCom review. I just uploaded the article to our Files Folder 08. 73 Roger VE7LB
Phil VK4KW / VK4BAA All Messages By This Member #79 Well, that just proves that you never stop learning! I had no idea that the keypad could be used for doing that. I'll give that a try when I get back to the shack. Does it only do it if the links ae present on the rear ACC1? Maybe your modified 901R provides this hardwired linkage? I have a hardcopy of the technical supplement in the shack so I'll look further into that too. I'll be working on the rig over the next couple of weeks to get it back into operational condition. I'd also like to do whatever improvements / upgrades that I can perform on it - especially upgrading any filters etc. I'll have a look in the files section to see what I need to put onto a shopping list..... Thanks Gents - superb knowledge on here..... 73, Phil VK4BAA toggle quoted message Show quoted text ----- Original Message ----- From: [email protected] To: <[email protected]> Cc: Sent: Mon, 04 Jan 2021 06:23:03 -0800 Subject: Re: [Yaesu-FT-980] FT-980 Used with a transverter - frequency display to suit VHF / UHF band Phil, You can do this from the front panel by selecting the "Key -> V/U" buttons. I have an FTV-901R that's been modified by Yaesu to work with the '980 and IIRC it toggles those lines as its band switch is moved. (Would hook them up and try an experiment but the transverter is stored away at the moment). The FT-980 Technical Supplement provides info on which lines are used with a transverter for frequency display. I'd given some thought to rewriting the firmware and adding our 222 and 902MHz allocations to the available selections if space permits. 73 - Fred, N8YX
Fred, N8YX All Messages By This Member #84 Phil, It's been a while since I had my FTV-901R/FT-980 connected together, but I did a test with one of my '980s last night (w/o transverter). The V/U button doesn't have an effect, and the Operating Manual (which describes its function) seemingly bears this out. You must have a transverter connected to the radio and the appropriate lines on the ACC connector toggled before the button will change the display. 73 - Fred, N8YX
Phil VK4KW / VK4BAA All Messages By This Member #86 Thanks Fred. That description makes sense. I've ordered a connector for the ACC1 facility and will link the appropriate pins etc. The relevant pins are indeed described within the RSGB RadCom review, but I have no idea where the author of the review got the information from - I can't see this aspect depicted within the Technical Manual. I might send an email to the UK reflector and see if it bears any fruit. I'm just curious as to where the info came form - there might be more to be had!? 8-) I'll download some goodies from the files folder to see which mods to do on the rig. Roofing filter etc sounds like a smart move, but I'm not sure as yet how to do it or what bits I'll need to buy. Thanks again and 73, Phil VK4BAA toggle quoted message Show quoted text ----- Original Message ----- From: [email protected] To: <[email protected]> Cc: Sent: Tue, 05 Jan 2021 06:23:29 -0800 Subject: Re: [Yaesu-FT-980] FT-980 Used with a transverter - frequency display to suit VHF / UHF band Phil, It's been a while since I had my FTV-901R/FT-980 connected together, but I did a test with one of my '980s last night (w/o transverter). The V/U button doesn't have an effect, and the Operating Manual (which describes its function) seemingly bears this out. You must have a transverter connected to the radio and the appropriate lines on the ACC connector toggled before the button will change the display. 73 - Fred, N8YX
Mat Breton N8TW All Messages By This Member #87 Hi Phil, Inrad sells a 6th-order 47.055MHz crystal roofing filter meant for the FT-980, but I don't know anyone who has installed it (and certainly no one who has done pre/post testing to see effects on sensitivity). Cost is $125 (plus S&H), and it is currently in-stock. I will include some details in the "mod" files folder. Give me a couple hours ... Note: You will almost certainly limit FM bandwidth to 5kHz (vs the 12kHz native bandwidth). While the initial tolerance of the matched crystals will likely be good, I'm not so sure how a VHF filter is going to behave over time as the crystals age. At 47MHz holding a 5kHz band requires VERY closely matched crystals. -- -Mat Breton, N8TW
Phil VK4KW / VK4BAA All Messages By This Member #91 开云体育 Thanks Roger. ? I’ll go and download it now…. ? 73, ? Phil ? toggle quoted message Show quoted text From: [email protected] <[email protected]> On Behalf Of Roger VE7LB Sent: Tuesday, 5 January 2021 1:03 AM To: [email protected] Subject: Re: [Yaesu-FT-980] FT-980 Used with a transverter - frequency display to suit VHF / UHF band ? Phil, You were right on about the RSGB RadCom review. I just uploaded the article to our Files Folder 08. 73 Roger VE7LB

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