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BFO CVC ALIGNMENT
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Hi, friends, I tried to do the aligment described on pag 23 of Tec Supplement. BUT, I have not succefull on it. I turned the TC01 to obtain the voltage on TO04 6 V, with USB mode and IF SHIFT control fully counterclockwise, and when I switch to LSB and IF SHIFT fully closkwise, it go down a little, 5,5 v. The document refers it should be 3-4 V. Any idea?
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IF Unit circuit
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Hi, guys, I need an IF Unit circuit without black labels indicating voltages and signals. These labels are over the lines of circuit and I cant to follow the lines of this Unit. Thanks. Dr. José Carlos León Ortega UDI- Universidad para el Desarrollo y la Innovación Tel. (591 3) 3422525 Santa Cruz - Bolivia
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FT980 dose not recieve
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Hi, Huys, My FT980 lost the reception and the left meter give a position on the middle of the scale, the ritgh dose not mesure any. Any noise on the speaker. Any hint? Tnx--CP6CL
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FT-980 Problems
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I purchased the Ft-980 as a package from local ham (NX0A) who was down sizing. A technician friend was able to get it going and it worked for a few weeks, but now it’s stuck on a 75 meter frequency, can’t change bands nor ham or general. Had excellent audio. Any Ideas what to look for? Bruce -KB0K Sent from Mail for Windows
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Looking for sp 980
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I was given a ft 980 in pieces and after cleaning and replacing a 20 pin IC in PLL I have it working great! What a rig. Bought a MD1 for it, and now need the matching speaker. I think I want to keep this one a while . Randy K5SL
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I ran my FT-980 through the recent ARRL DX CW Contest. No sweat, Primary fan never came on, no issues. Love that. Used a K1EL keyer, drove it with my ACLog contest software (logger was the keyer memory, not the K1EL) via USB. I used a signalink USB to capture the audio out and ran it into MRP40 as a decoder. With most of the contestors running at 35-35 wpm, I was in over my head without it. I could get the exchanges, but the MRP40 really helped with the call signs. I have the optional 300Hz 8-pole xtal filter (XF-455.8MCN) in the FT980 as well as the 600Hz filter. The300 Hz filter makes all the difference in a contest: I can switch that on and listen to everything else fade out. -- -Mat Breton, N8TW
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Hi all, I would like to share my technical experience with my FT980. After many many years of no use I wished to make a deep check and precise alignment of the equipment. I found three blocking failures: - fail contact of the coax connector J02 on RF UNIT (symptom: very poor rx sensitivity and no output pwr in tx) - output PA UNIT coax shield disconnection (instability in output spectrum and output pwr, in particular on low bands) - open capacitor C3067 on AF UNIT (tx spurs of 240 Hz and harmonics in SSB, AM, FM) After these mayor fixing I investigated on the frontend HAM bandpass filters: after a little retuning of the inductances the resulting behaviour was not so good due to frequency regrowth for frequencies lower than the bandpass regions. Probably this is due to the aging of the electrolytic bypass capacitors used in the pin diode switching band circuit. I added two new tantalum smd 47uF 16V cap and a 330 nF smd ceramic cap in parallel to C212, C130, C125, C120, C114, C109, C104, C97, C91. The results were very good: the spectral regrowths disappeared as you can see from the attached pictures. Only four bands are present on the pictures, but all the bands gain benefits from the additional bypass caps. It is important to use very low ESR capacitors, those used in switching power supplies generally fit the scope. Best if you can trust on specific caps datasheets for the ESR value. No significant difference in the response were noted in the bandpass region nor in the higher band frequencies region after the use of additional bypass caps. The 10m bandpass filters is a bit worse in terms of insertion loss and form factor, I'm investigating on it because I plan to develop a multiband transverter that will use the FT980 10m band. The responses were carried out with AGC off, gain RF max, input rx -30 dBm, output at TP1 on RF UNIT with a 450 ohm resistor in series to the spectrum analyzer input (it results in an additional loss of 20 dB in measurement, but it will not load significantly the circuit). The same check was carried out for the GEN (wide) band pass filters, but in this case adding low ESR caps in parallel of the existing bypass caps didn't result in significant improvements, so I don't recommend it. Next steps will be a new 11m band pass filter and the complete check and retuning. Also 12.5 KHz FM channel spacing and CTCSS encoder are in my plans. Thanks for hosting me, best regards Enrico IK2XEI
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Power on the no switch to receiver….
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Hello Everyone, Is there a switching relay that clicks over to turn on the receiver right after you press the power button? If so, is that relay serviceable? Tonight when I switched on the radio, the receiver did not come on. The ALC meter was at the half way point. All controls and buttons frequency display are fine. I powered it down, then tried power cycling it on and off several times. No change. I came back later and tried again and it powered right up and the receiver turned on. Thanks….
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Carry handle retainer clips?
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Hello, Would anyone have a source or replacement for the 2 gray plastic retainer clips for each end of the carry handle? Can they be replaced with a newer type? Any possibility of anyone making a 3D printed version. Mine are both missing, I know they tend to dry up over the years and crack. I believe the same clips are on my FT-ONE. Thanks,
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File /05 - Mods/Wireless Article - FT-980 Breakout Bar.pdf uploaded
#file-notice
The following files have been uploaded to the Files area of the [email protected] group. /05 - Mods/Wireless Article - FT-980 Breakout Bar.pdf By: Mat Breton <i.m.n8tw@...> Description: Not really a mod, more of a convenience. But I use it a LOT.
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FT-980 Operating Quirks
I thought I would start a topic on operating quirks of the FT-980 that we have found. ~~~~~~~~~~~~~~~~~~~~~~~~~ I'll start it off with one for operating with a non-QSK Linear Amp: WIth a non-QSK linear you don't want the linear's clunky mechancial relays trying to replicate the dits/dahs on the FT-980 output stream which is what will happen if the PTT out mirrors the CW stream. The typical fix/method is to use a PTT "delay" function on either your Keyer or Rig. The FT-980 has such a delay function, but in order to make it work you have to turn on the VOX. This isn't well documented, is perhaps non-intuitive (at least to me), and took a bit to figure out. The reason is that the FT-980 internal delay is actually shared by both the VOX circuit, and the CW circuit (all the non-PTT internal functions). There is a mention on this on page 29 of the manual for QSK tuning, but you need to extrapolate for non-QSK operation. ~~~~~~~~~~~~~~~~~~~~~~~~~ -- -Mat Breton, N8TW
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FT=980 boards and accessories on EBAY.
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Gang, There are many FT-980 boards etc on Ebay. Some are local and some come from Europe. Some times it is easier to replace a board than an individual part. 73 Dave K4JRB -----Original Message----- From: "Wald N4PL via groups.io" Sent: Feb 24, 2021 9:59 AM To: "[email protected]" Subject: Re: [Yaesu-FT-980] Still Kicking after 40 Years ... Hi Mat, OK, thx for the update. If you had any problems with the character truncation you would have known that right away... I did figure that out the hard way. My first QSO with the FT-980 was ZL2AIM who replied to me as I4PL and turned his beam to EU HI. I quickly realized what was going on and switched to MOX. As far as the Curtis keyer board... you have nothing to regret for not having it. That IC requires a perfect paddle timing otherwise it immediately cancels the current character and starts a new one. It is an art to master this keyer, especially if your expectations were set by, say, WB4VVF and later versions that had the "last character memory". FYI, I ended up ordering the Pico-keyer kit and built it on my own PCB that mounts inside the radio. Connects via the same header. I added a DC switching circuit so when the rig powers up the keyer uses the +9V internal supply line and cuts off the Lithium battery. The front panel pot wiring required a small surgery though. I have it all documented. If you are interested I can upload it all to the server. 73, Wald N4PL On Tuesday, February 23, 2021, 8:32:45 PM EST, Mat Breton <i.m.n8tw@...> wrote: I was operating barefoot for the contest, so no QSK. My Henry linear doesn't have QSK capability natively. I've thought about adding it, but it would be expensive and a good-sized project. I use an external keyer (K1EL). I don't even own the FT-980 curtis keyer pcb. I'm so used to the K1EL that it would be issue to swatch, I think. WIth the K1EL I've never received any feedback on a shortened initial dit, and I haven't noticed any miscopies that would indicate it. I also suspect it might be a curtis interaction with the FT-980. I note that it looks like the board was upgraded for later radios (FT-902, etc), and maybe they fixed this issue. The PCBs are backwards compatibile I believe. -- -Mat Breton, N8TW
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"Hidden" Capabilties of the FT-980
3
While working on the Hamlib CAT interface improvements I've come two items that are "new" to me and are not documented/well-documented: 1. 4 "Hidden" Memories only accessible via CAT 2. 3 "Aux" Bands, only controllable via CAT The four hidden memories bring the total from 12 -> 16 ... but you can't access 13-16 via the front panel ... only through the CAT interface. Page 1 of the operating manual clearly states that their are only 12 memories ... not 16. The 3 Aux bands are shown as "VFO"s: AUX1, AUX2, AUX3 in the CAT manual. I believe that it isn't a coincidence that their are 3 AUX band spaces on the RF board. It will be interesting to see if these can also be activated via CAT control ... meaning we might not need to have/make an "AUX Band Data ROM" to add 30M, 60M to the rig ... just the RF board components. I think the only way to tell for sure is to give it a try ... unless anyone has tried (or knows of someone who tried) this before. I'll add this as a follow-on project after I get the Hamlib interface done. -Mat -- -Mat Breton, N8TW
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Files Update
3
I tried the ft-980 io group and my group came up without the need to sign in. I clicked on the files and got them all. Here are a few things about the FT-980 a user needs to be aware of... 1. Early 980's had a problem with QSK and that is why the FRB-1 relay box was produced by yaesu at the urging of Carlos TI2CF. 2. The little relay that switched between GEN and HAM can get dust inside the cover that needs to be cleaned out from time to time. 3. The best was to operate split was to set up split bands in memory just wish there were enough memories to set sp0lit bands for SSB and CW. 4. The 980 should sound the same between upper and lower sideband and if not the little capacitor in the vcv circuit needs to set to correct. You need to use an alignment tool to do so. I replaced the capacitor in my original FT-980 with a better capacitor as the original would break. 5. Do not use the Yaesu GEN TX mod. K4DPK had a better mod but it is lost in time. 6. A 1985 DOS program to actually CAT the transceiver was good but the windows version was in progress when the author lost his hard drive and the windows version was lost. 7. The original apple interface was replaced with the FIF-232C by Yaesu but I found it clumsy and Ham Radio Deluxe program said the transceiver was too old to support. 8. Some amps were hard to support even with the relay mod suggested by Yaesu so use the FRB-1 relay box to assure proper relay control. 9. The Curtis keyer never did let me set spacing's even usin a nice Vibroplex paddle. I found an outboard keyer was a better solution. N4PL built a kit keyer to put in place of the curtis works great and even cured the first character truncation that N5IA found while operating the CQ 160 CW contest. This all of the problems I ran into over time. Recently I found problems with wobble in the main tuning dial and problems in the main mode switch that stopped CW and FSK to go out. For some reason SSB and AM always worked. You need FSK to tune up a linear. Many boards can be found on EBAY to replace boards on your FT-980 that go bad and at a reasonable price to save you tracking down the bad parts. Most I have seen are reasonable prices. I got a new CPU board that worked great but beware the board is at the bottom of a stack of boards boards so use caution or screws with drop into the stack. 73 Dave K4JRB _._,_._,_
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File /10 - CAT - Computer Aided Transceiver/Using rigctlcom to interface to the FT-980 v1.pdf uploaded
#file-notice
The following files have been uploaded to the Files area of the [email protected] group. /10 - CAT - Computer Aided Transceiver/Using rigctlcom to interface to the FT-980 v1.pdf By: Mat Breton Description: How do you get software that doesn't support the FT-980 to communicate anyway? Use hamlibs "rigctlcom" translation program. It will fool any software into thinking your rig is a Kenwood TS-2000 :) Currently only get/set frequency and mode work with hamlib, but that is all that 90% of the SW out there requires. And even better ... additional functionality will be added to hamlib shortly.
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USB-CAT Cables: A question for anyone ...
3
This is for the hamlib CAT library improvement project. Do any of you have one of the USB <-> FT-980 CAT cables (not a FIF-232C interface)? If yes, do you know if it supports PTT (through CTS/RTS pins)? If yes, is it the CTS or RTS? The FIF-232C does support the (you need to add a simple circuit to tie the RS-232 pin to the CAT pin), but since the CAT port does support it I suspect that they may have this support built in. I would like to make sure we define the library to natively support these cables ... Thanks, -- -Mat Breton, N8TW
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FT Newsletters Product Detector upgrade
4
Ran through a couple of mods and an article in the FT Newsletters that mention replacement of the OEM product detector quad with a set of Schottky diodes. Digging around those articles, one finds mention of HP 5082-2900 (a mesh type) as having the lowest noise figure. Found this vendor as a source: https://www.rf-microwave.com/en/hewlett-packard/5082-2900/schottky-diode/5082-2900/ At least 32 and possibly more are on my to-buy list as upgrades for all of my '980s plus a bunch more period gear. Hope this is of benefit to someone. 73 - Fred, N8YX
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File /05 - Mods/Product Detector Diode Replacement/QST Oct 1987 - Schottky Diodes and AM Detection.PNG uploaded
#file-notice
The following files have been uploaded to the Files area of the [email protected] group. /05 - Mods/Product Detector Diode Replacement/QST Oct 1987 - Schottky Diodes and AM Detection.PNG By: Mat Breton
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4 files uploaded
3
#file-notice
The following files have been uploaded to the Files area of the [email protected] group. /05 - Mods/Inrad Roofing Filter/Article_ Yaesu FT-980 Roofing Filter mod.pdf /05 - Mods/Inrad Roofing Filter/FT-980 Inrad #906 Roofing Filter.pdf /05 - Mods/Inrad Roofing Filter/VHF Filters for Experimenters.pdf /05 - Mods/Inrad Roofing Filter/Wireless Article - FT-980 Roofing Filter.docx By: Mat Breton
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FT-980 Used with a transverter - frequency display to suit VHF / UHF band
8
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
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