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Ron / WB4HFN -------------- Original message -------------- From: Garey Barrell <[EMAIL PROTECTED]> > > Garey Barrell made an utterance to the drakelist gang > ---------------------------------------------------------------------- > Byron - > > OK. Relays take more coil current to "pull in" than they do to "hold > in". It takes a certain amount of current through the coil (pull) to > drag the armature from it's non-energized position to the energized > position. It takes much less current to (hold) it once there, so slight > leakage might NOT be sufficient to pull, but more than enough to hold. > > I don't know of any good way to touch up the panels. The original > "paint" is so thin, (I actually think it is more a dye (anodize?) than > paint, but don't know for sure,) and as a result any sort of paint ends > up looking worse than the mark! For a small mark or two, it might be > possible to just "fill" the mark to the level of the panel, but a string > of numbers would be a real challenge. Never could understand people > that do that sort of thing, especially on the front panel!! > > I just saw your order. There are scans of both the 34-NB and the 34-PNB > manuals, with quite a bit of information, plus I have added a photograph > of the board itself with active components and alignment info > annotated. There is also a Voltage table for the NB, which has not been > previously published. It's really a straightforward design, and most > units in the field benefit from an alignment. > > A lot of the components are common between the TR-3 and TR-4, but every > once in a while they threw in a curve like that cap to keep us off > balance! :-) > > Your CDs will go out tomorrow. Thank you! > > 73, Garey - K4OAH > Glen Allen, VA > > Drake 2-B, 4-B, C-Line & TR-4/C Service Supplement CDs > > > > > Byron Tatum wrote: > > > > "Byron Tatum" made an utterance to the drakelist gang > > ---------------------------------------------------------------------- > > Hey Garey- > > Thank you for the comments and help. I start nights at work and > > will have several to complete, then I will get back into the TR-4. I > > will measure voltage as you suggest, looking for a slight voltage > > drop. Then I will check out relay itself. > > I am beginning to think that it is the magnetizing of pole piece > > and relay wear that is the problem. If it was a leakage to ground on > > the 6EV7 pin #1 lead you might think the set would go into TX on its > > own (relay energize) every now and then, of which I have never saw it do. > > One other thing- I bought a nice TR-4 from a fellow, based on > > several pictures, but the photo angles, due to glare, covered up (of > > all things) a ham's DL # engraved on the front panel in tiny lettering > > , immediately to the right of "TR-4" on front panel. Do you know of a > > touch up paint that matches the darker grey of that front panel area? > > I got the set for a decent price, it was nice and had the built in > > NB, but had a problem (as advertised). I found T-9 to be burned out in > > center area of coil form. I had a spare T-9 from a parts unit TR-3. > > Thank goodness I opened up the TR-3 T-9 transformer before I installed > > it -- it had a 56 pF cap in it that was not in the TR-4 T-9. Otherwise > > the coils looked the same. Anyway, I clipped out the capacitor and all > > went OK after the repair. That is not a fun repair for sure!! > > CUL, Byron. > > ----- Original Message ----- From: "Garey Barrell" > > To: > > Sent: Tuesday, April 29, 2008 1:46 PM > > Subject: Re: [drakelist] TR-4 TX Hang-Up > > > > > >> Byron - > >> > >> Well things were going well until you pulled the tube out of the > >> socket! :-) > >> > >> There are a limited number of possibilities in that case. The relay > >> coil leads go through the feedthrough bypass caps _under_ the power > >> connector. Of course the relay lead to the 6EV7 is the one UNDER the > >> Jones connector, the last one in the "arc" of feedthroughs there. > >> (C92) There are no more components between this feedthrough and the > >> 6EV7 tube socket. The other relay coil lead goes directly the +250V bus > >> via the next feedthrough cap along the arc, (C91). So the voltage > >> measured at the tube socket pin with the tube out should be exactly the > >> same as the +250V bus. Any drop would indicate leakage. See attached > >> photo from my CD (at reduced resolution). > >> > >> So..... Leaky C92, leaky tube socket, pinched wire. One possibility I > >> have seen a few times is the "down" stop on the relay gets hammered down > >> over the years, allowing the armature to actually touch the pole piece > >> of the coil. The pole piece is slightly magnetized, and if the armature > >> physically is in contact with it, it will "stick". An easy check is to > >> slip a piece of paper in to prevent metal to metal contact between the > >> two. The "down" stop can be bent back up to prevent this contact. > >> > >> Let us know what you find!! > >> > >> 73, Garey - K4OAH > >> Glen Allen, VA > >> > >> Drake 2-B, 4-B, C-Line & TR-4/C Service Supplement CDs > >> > >> > >> > >> > >> Byron Tatum wrote: > >>> Hello- > >>> I have an unusual problem perhaps someone could shed some light on: > >>> I have a TR-4 in 29K serial range that functions normally > >>> except it will not go back into receive, until after approx 30 second > >>> delay, after the mic button is released or the function switch turned > >>> back to "SSB". This condition worsens (longer delay) the more you > >>> frequently you transmit. The sidetone disappears but T-R relay will > >>> not release. > >>> I have tried different known-good 6EV7 tubes, have replaced a lot > >>> of the coupling / bypass caps in T-R circuits, did resistance / > >>> voltage checks, adjusted the VOX / VOX delay controls, tried other > >>> tubes in T-R circuit, etc. to no avail. > >>> What is real curious about this is that while waiting for it to go > >>> back into receive and T-R relay is engaged, IF YOU PULL THE 6EV7 FROM > >>> ITS SOCKET THE T-R RELAY STILL DOES NOT RELEASE. I suspect the issue > >>> is with the lead that goes from T-R relay coil to pin #1 on 6EV7 > >>> (somehow allowing enough leakage to ground?) or could it be the T-R > >>> relay coil itself I made sure socket / pins and all are clean on > >>> 6EV7. > >>> Any help appreciated, thanks. > >>> Perplexed, > >>> Byron WA5THJ. > >>> > >> > > > > > > ---------------------------------------------------------------------- > > Submissions: [EMAIL PROTECTED] > > Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in > > body > > Hopelessly Lost: [EMAIL PROTECTED] - help in body of message > > Zerobeat Web Page: - sponsored by > > ---------------------------------------------------------------------- > > > > > > ---------------------------------------------------------------------- > Submissions: [EMAIL PROTECTED] > Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body > Hopelessly Lost: [EMAIL PROTECTED] - help in body of message > Zerobeat Web Page: - sponsored by > ---------------------------------------------------------------------- Wt dF n K

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我们已将面向用户的 Kylin 镜像上传至 docker 仓库，用户无需在本地构建镜像，只需要安装docker，就可以体验kylin的一键安装。B C q m I v

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NV u Byron - Well things were going well until you pulled the tube out of the socket! :-) A U A

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zE K ET Net Limited, HKEx Information Services Limited, its Holding Companies and/or any Subsidiaries of such holding companies, and Third Party Information Providers endeavour to ensure the availability, completeness, timeliness, accuracy and reliability of the information provided but do not guarantee its availability, completeness, timeliness, accuracy or reliability and accept no liability (whether in tort or contract or otherwise) any loss or damage arising directly or indirectly from any inaccuracies, interruption, incompleteness, delay, omissions, or any decision made or action taken by you or any third party in reliance upon the information provided. The quotes, charts, commentaries and buy/sell ratings on this website should be used as references only with your own discretion. ET Net Limited is not soliciting any subscriber or site visitor to execute any trade. Any trades executed following the commentaries and buy/sell ratings on this website are taken at your own risk for your own account. 2. (2018高三上·长沙月考) 根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 L Yd

FX U大发投注网目前官方已在最新版本2.6.6与3.0.2中修复了该漏洞，请受影响的用户尽快升级版本进行防护，官方下载链接：d F J

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去重计数在企业日常分析中应用广泛，如用户留存、销售统计、广告营销等。海量数据下的去重计数十分消耗资源，动辄几分钟，甚至几小时，Apache Kylin 如何做到秒级的低延迟精确去重呢？q a u

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优麒麟系统Ubuntu Kylin如何进行网络连接与配置，今天小编就的教你们几个简单方法，分分钟轻松搞定，关注收藏再也不用为上网而困扰。 无线网络配置 如果您的计算机启用了无线，则可在处于无线网线覆盖范围时连接到该网络，以访问 Internet、查看网络上的共享文件以及执行其他操作。 1）如果计算机上有无线硬件开关，请确保打开该开关。 2）单击底部面板中的网络菜单，然后查找所需的网络。 3）如果您的无线网络名称未出现在列表中，请单击更多网络，以查看该网络是否在列表的下方。如果仍未看到该网络，您可能超出了网络 M wV

That's a NEW one! :-) How long did the relay have to be energized to generate enough heat? A lx

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zpq60Apache Kylin 启动后，可以通过浏览器“进行访问。其中，“”为具体的机器名、IP 地址或域名，默认端口为“7070”，初始用户名和密码为“ADMIN/KYLIN”。服务器启动后，您可以通过查看“$KYLIN_HOME/logs/kylin.log”获得运行日志。j k F

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