Driver Parallel Lines Mods
Signa. Link. USB Mods The story began when I bought my new and shiny laptop Zepto. Znote 6. 62. 5WD Super machine, and realized that the classic ports LPT. COM were history, and not all external replacements USB lt. RS2. 32Parallel were applicable especially to my chosen primary. Linux Ubuntu, or for that matter to Vista 6. Up until now. Ive been using home brew interfaces both for use in the shack and p. I needed to reduce the cable fest and to find a simpler solution. Gottlieb System 1 Pinball Repair from 1977 to 1980 All text and pictures copyright by cfhprovide. Clay Harrell unless otherwise noted. Document date 080116. Pictures of the Taig Lathe, Mill Other Tools and Accessories. Here are pictures of the Taig Micro Lathe and Taig Milling Machine, pictures of my machines and other. Driver Parallel Lines Mods' title='Driver Parallel Lines Mods' />USB Sound. Card and VOX solution have failed miserably. I then happened to see a review of the Tigertronics Signa. Link USB product in QST finding that this could be a plug in solution to my setup. Small. easy to set up, supplying the sadly absent VOX capability in my FT 8. Operating system independent First. Problem Lack of crispness in the RX audio, which makes the sibilant parts of human speech hard to distinguish from each other. This is caused by a p5db. TRS80 Revived Site by Ira Goldklangs is an archive of everything related to the Tandy Radio Shack TRS80 microcomputer lines. Site contains emulators, programs. When I finally found that a local dealer BM Radio, had them in stock, I immediately ordered one, and got it two days later. Hurrah When. I unpacked it I found a ready confectioned cable for connection to the. FT 8. 47 and a 3. Phone jack 14 jack on the 8. Ubuntu which. recognized the new Sound. Card automatically WSJT7 in. FSK4. 41 mode immediately yielded a working set up. Literally less than 5. This is where the real story begins. The. first crucial to my operating style at least modification, was to. Signa. Link USB directly to the Data port. For the last few years hobbyists worldwide have been experimenting with inkjet PCB printing, i. Mods Notes Spare Parts, Mod Kits, Order Page. KX3 MODs Order Page. KX3 App Notes Page. KX2 App Notes. K3 Alerts, Enhancements and Application Notes. Hi Dave, thank you for the great article. You were right ON the weakest points of the VOX AC15 in your mods, so now this is my Bible for the following weeks. A striping vehicle from the 1930s. The extended front functioned like a long scope, helping the driver stay true so he could place paint accurately. Driver Parallel Lines Mods' title='Driver Parallel Lines Mods' />
FT 8. No problem, well documented on the manufacturers. I chose a different solution, I added the capacitor and. Minecraft Ps3 Map Europe'>Minecraft Ps3 Map Europe. Im able to switch. I now have interface cables ready for the. FT 8. 47, the data port of the FT 8. ACC1 port of. the ICOM IC 7. Pro. III, all interchangeable at the RJ 4. Running WSJT in FSK 4. I immediately noticed this upper right corner of the WSJT. Window listening to white noise on the 1. Half Life Black Mesa Xen. MHz band Where Im used to this Home brew interface to SB 1. Sound Card Notice the significant drop off at the low end of the AF spectrum. At. this point I had to switch operating systems to Win. XP in order to use. Spectra. Lab for a closer look at things. This is what the above looks like in Spectra. Lab 1. V RMS 0d. B I then accidentally looked at the noise floor of the Signa. Link USB cable un plugged I have later found out that my Zepto Notebook has an USB port that is much noisier than normalI checked with another USB Sound Card also on the Zepto Which is really significantly better This. Tigertronics support, and this again evolved into. F cap. accidentally replaced by a 4. F, but at the same time maintaining. I wanted to undertake the repair myself, I. World. If. the Cap at the red arrow is marked 4. F, its in my opinion, but. Tigertronics a good idea to replace it with a. F1. 0V Tantalum capacitor Youll then see a significant improvement of the noise floor Much. That its not a problem, and b that its due to. FT 8. 47s data port and the Signa. Link. USB why they have neglected to address that in the product design they. I can report that the same symptoms. ICOM IC 7. 56. Pro. IIIs ACC1 port. They also refrain from publishing the optimum connection impedance or specifying their input impedance and frequency response. There. is something to be said in support of the poor match argument When. Phone jack the symptom. It turns out that they have placed a 1. F capacitor. across the primary winding of the isolation transformer, apparently in. AF spectrum somewhat. They Tigertronics claim its there to guard against RF entering the circuits. When removing this, the symptom got worse This is the original transformer used by Tigertronics after removal Since. Tigertronics flatly refused to let me have the schematics of the. I saw this as my most likely point of modification, and. Ive used them in all. Ohm audio transformers. F capacitors out Ive. F ceramic capacitors where the 1. F. used to be, and cannot see any measurable difference with or without. Ive left them in. These. transformers are a poor mechanical fit, but were exactly what the. I now have this frequency response again. FT 8. 47, 1. 44. MHz white noise from Data port I found a couple of other transformers also ex telephone equipment that were a better mechanical fit. Quran English Pdf File more. There. are lots of similar 6. Ohm audio transformers available from. Radio Shack Farnell etc., if you cant find some. And they produce equally good results despite having Ferrite cores as seen here Ive done some further experimentation with decoupling of the USB signals from the computer Each of the USB interface pins have gotten 1n. F caps to Ground. Colin, G8. TMV writes I must disagree with one of the mods, adding 1n. F caps across the. USB data lines is a very badidea, it will distort the USB datasignals very badly. You should use 1. F at most. Ill try that and get back here with any necessary updates. Update 1. 8. 0. 8. Ive done the 1. 0p. F mod, with no change seen at all good or bad, so the 1. F value is recommended for this mod. Update 1. 0. 0. 9. I now recommend removal of this mod, if you have performed it. As. pointed out, it brings the USB connection out of specs, and make no. It actually disables USB. The power supply from USB has been cut, and a 1. H choke inserted,and. F capacitor added at the PIC supply line the picture erronously. F cap it was corrected after the picture was taken. The end result of these additional modifications is a small but measurable improvement of the noisefloor a few d. B and finally the product meets my expectations Why. Tigertronics havent done this, is beyond my understanding, all it. SMD components, changed values of a couple. Their claim that it doesnt matter, has substance. Signa. Link USB for, is running stuff like RTTY. SSTV and partially PSK3. HF bands and make sure to keep wanted. If, on the other hand. HF bands and VHFUHF, looking for. PSK3. 1, JTxx, WSPR and FSK4. B below the noise, you need all the headroom and linearity you. Signa. Link USB as shipped simply doesnt cut it As. Line connector. Its a pity since only these few. OK, just. lacking the engineering polish. PS Tigertronics has made a. Signalink USB to the. ICOM IC 7. 56 PROxx MicrophoneHeadphoneLoudspeaker IO and presumeably. DC through the Mike pin. F will do. nicely need to be inserted between mike input and the isolation. If the DC is let through, the transformer core is. Having a problem with distortion of audio from my Orion II Line Out, I. DC component of 5. V for no apparent. I have now adopted the policy of using a DC blocking capacitor. DIL 1. 6. solder block for the option wiring instead of the yellow wires, this. Universal Option Plug for the Yaesu FT 8. Ten Tec Orion, I made this common and adapted the cables, so. I can swap cables only when switching radio. This universal option Block is wired thus SLUSB Side RJ4. Side G 5 G 7 PTT 6 MIC 4. SPK 4. 70n 1. The Ten. Tec Orion AUX Cable Is wired like this Signa. Link. USB TT Orion Cable RJ4. DIN 1 1 Line In 7 2 GND 6 3 PTT 8 4 Line OutAnd the Yaesu FT 8. Data Cable. The small piece of perf board hiding within the red shrink tubing. K8 resistor in the. The cable wiring is Signa. Link. USB Yaesu FT 8. Cable RJ4. 5 3. Stereo. Jack 1 RING Line In 7 RTN GND 6 1. K8 TIP PTT 8 TIP Line OutSigna.