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看到篇有关817提高功率的洋文没整明白,那位兄弟能给翻译下? [复制链接]

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离线lxps
 
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只看楼主 倒序阅读 0楼 发表于: 2010-03-25
yaesu ft-817 (ft 817 ft817) 10 watts output

there are suggestions to set the ft817 to get the maximum possible output of 15 watts from an ft817, but i consider this similar to believing in santa claus – do you really believe that yaesu would overdesign the filters, relays and power feeds to cope with three times as much power as they advertise the unit for ?
the 15 watt mod also totally disables the dc current limiting. expect to see charred coils, dc filters and pc board next time you look inside your rig – a fan on the heatsink won’t stop this. for a rig that has no over-temperature indication or protection of any sort, tripling the power level is designing for disaster.
this procedure here will increase power to 10 watts on hf bands only, but ensures that the dc over-current protection will reduce power into abnormal loads that the swr detector cannot detect. swr bridges are a only a compromise at detecting reflected power – that’s why yaesu went to the effort of building in dc over-current protection as well as high-swr protection.
here is the recommended procedure, you will need a dummy load and a wattmeter or rf voltmeter. make a note of your original calibration settings so you can go back to the standard setting later – the easiest way to do this is to use ft817 commander freeware. it is also easy to accidentally change a value by bumping the dial knob, and you need to be able to get back to the original setting.
if you have a key connected, set the vfo to cw on 1.8, 7 and 21 mhz bands – if you don’t have a key, then set them to pkt and you will be able to get full carrier using mic ptt but with no modulation going out.
turn the radio off. press and hold the three a, b, c buttons and press the pwr button. to change to a different menu item turn the small sel knob. to change the value of the item, turn the large dial knob. be careful not to bump the dial knob so you don’t accidentally change settings..
1.      increase hf1-ic to 150.
2.      increase hf1-hi for an output of 14 watts - you will need at least 12 volts input.
3.      decrease hf1-ic until you get 12 watts output
4.      now set hf1-hi for 10 watts output.
5.      repeat for hf2 and hf3
you could also change hf1-l3 to 5 watts to save battery drain when 10 watts isn’t needed.
if you are using an rf voltmeter the readings are 0.5w=5v 1w=7v 2.5w=11v 5w=16v 10w=22v 12w=24v 14=26v.
to avoid de-calibrating the voltmeter, set your supply to 13.8 volts – otherwise if you just flick over the dc volts position (item 17 - vcc) you will recalibrate it.
to save these changed settings, hold the f button for two seconds when finished.
离线BG4IGX
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7444
只看该作者 1楼 发表于: 2010-03-25
1. increase hf1-ic to 150.
2. increase hf1-hi for an output of 14 watts - you will need at least 12 volts input.
3. decrease hf1-ic until you get 12 watts output
4. now set hf1-hi for 10 watts output.
5. repeat for hf2 and hf3
写的很明白,不过烧管的可能很大。
离线soom
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24926
只看该作者 2楼 发表于: 2010-03-25
找BA7CK,他好象扩到15W
离线lxps
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只看该作者 3楼 发表于: 2010-03-25
同一个网站找到的隐含菜单调整表,有兴趣大家对比下。
附件: ham.dmz.ro.ft-817_servicemenu.pdf (0 K) 下载次数:53
离线lxps
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只看该作者 4楼 发表于: 2010-03-25
还有这个:
yaesu ft-817 (ft 817 ft817) servicepoints
(push a/b/c synchron and start device)

number;content;point;declaration;
1;hf1rxg rx gain;1.8mhz;181;
2;hf2rxg rx gain;7mhz;91;
3;hf3rxg rx gain;21mhz;123;
4;50mrxg rx gain;50mhz;66;
5;vhfrxg rx gain;144mhz;90;
6;uhfrxg rx gain;430mhz;117;
7;ssb-s9 ssb s-meter;s9;70;
8;ssb-fs ssb s-meter;fs;59;
9;fm-s9 fm s-meter;s9;76;
10;fm-fs fm s-meter;fs;109;
11;disc-l fm center;meter;35;
12;disc-h fm center;meter;69;
13;fm-th1 fm;squelch;82;
14;fm-th2 fm;squelch;82;
15;fm-ti1 fm;squelch;14;
16;fm-ti2 fm squelch;14;
17;vcc power supply;voltage;138;
18;hf1-ic over-current protection;1.8mhz;111;
19;hf2-ic over-current protection;7mhz;116;
20;hf3-ic over-current protection;21mhz;111;
21;50m-ic over-current protection;50mhz;113;
22;vhf-ic over-current protection;144mhz;126;
23;uhf-ic over-current protection;430mhz;113;
24;hf1-hi rf power hi;1.8mhz;116;
25;hf1-l3 rf power l3;1.8mhz;67;
26;hf1-l2 rf power l2;1.8mhz;21;
27;hf1-l1 rf power l1;1.8mhz;4;
28;hf2-hi rf power hi;7mhz;119;
29;hf2-l3 rf power l3;7mhz;65;
30;hf2-l2 rf power l2;7mhz;21;
31;hf2-l1 rf power l1;7mhz;3;
32;hf3-hi rf power hi;21mhz;117;
33;hf3-l3 rf power l3;21mhz;63;
34;hf3-l2 rf power l2,21mhz,20;
35;hf3-l1 rf power l1;21mhz;2;
36;50m-hi rf power hi;50mhz;115;
37;50m-l3 rf power l3;50mhz;64;
38;50m-l2 rf power l2;50mhz;23;
39;50m-l1 rf power l1;50mhz;1;
40;vhf-hi rf power hi;144mhz;140;
41;vhf-l3 rf power l3;144mhz;93;
42;vhf-l2 rf power l2;144mhz;28;
43;vhf-l1 rf power l1;144mhz;12;
44;uhf-hi rf power hi;430mhz;103;
45;uhf-l3 rf power l3;430mhz;68;
46;uhf-l2 rf power l2;430mhz;21;
47;uhf-l1 rf power l1;430mhz;9;
48;hf1txg tx gain;1.8mhz;67;
49;hf2txg tx gain;7mhz;62;
50;hf3txg tx gain;21mhz;67;
51;50mtxg tx gain;50mhz;89;
52;vhftxg tx gain;144mhz;79;
53;uhftxg tx gain;430mhz;69;
54;hf1pom power meter sensitivity;1.8mhz;71;
55;hf2pom power meter sensitivity;7mhz;72;
56;hf3pom power meter sensitivity;21mhz;71;
57;50mpom power meter sensitivity;50mhz;70;
58;vhfpom power meter sensitivity;144mhz;83;
59;uhfpom power meter sensitivity;430mhz;64;
60;alc1-m alc;meter;204;
61;alc-m alc;meter;125;
62;hf1-rv reverse;alc;1.8mhz;13;
63;hf2-rv reverse;alc;7mhz;11;
64;hf3-rv reverse;alc;21mhz;21;
65;50m-rv reverse;alc;50mhz;15;
66;vhf-rv reverse;alc;144mhz;7;
67;uhf-rv reverse;alc;430mhz;28;
68;cw-car carrier;level;cw;252;
69;am-car carrier;level;am;210;
70;dev-w;fm;modulation;211
71;dev-n;fm;modulation;103;
72;m-mtr;fm;modulation;188;
73;ctcss;fm;modulation;151;
74;dcs;fm;modulation;129;
75;lsb-cp;ssb;carrier point;-19;
76;usb-cp;ssb;carrier point;-20;
proceed at your own risk.
离线bg8am
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只看该作者 5楼 发表于: 2010-03-25
刚才胡乱翻译了一下,语文不好,翻译部通顺,大家将就看哈

yaesu ft-817 (ft 817 ft817) 10 瓦输出
有人建议改变ft817使其输出最大为15w的功率,但你真的像相信圣诞老人一样相信它吗--你真的相信yaesu会设计其机器,使它的滤波器,继电器,电源线等超过其广告的三倍功率工作?
15w的改动完全禁止了电流限制(这里应该翻译为“限流保护”合适点)。除非你希望下次打开你的爱机的时候,看到看到烧焦的电感,直流滤波器和pcb板子 -- 散热器上的风扇也不能有任何改善的。 对于没有过温指示或者保护的机器,三倍于其额定功率,无疑是场灾难。
这里的改动只是在hf波段增加功率到10w,但是直流过流保护会把输出改变到一个非正常的负载,这点会使驻波检测失效。swr电桥只是反向功率检测的一种妥协方案--这就是为什么yaesu会同时花大那么大的力气在驻波保护和过流保护 (译者按: 单纯一方面都保护不了你的机器的)。
这里给你一个推荐的改造方法,首先,你需要一个假负载和一个功率表或者一个射频电压表。首先把你的原始的校准数据保存,这样当你想恢复的时候,容易恢复回去 – 最简单的方法是使用免费软件ft817 commander. 你要知道,不小心碰了旋钮,都可能改变设置,所以你需要这些数据,以便恢复到原始的设置。
如果把电键连上了,请先在1.8,7和21mhz上把vfo设置为cw方式 – 如果没有电键,请把工作模式设置为pkt方式,这样当你按下ptt的时候,你才能得到无调制的纯载波输出。
关闭你的机器。按下a,b和c三个按钮的同时再按pwr键开机。如果要切换到不同的菜单,请使用小的那个sel的旋钮。改变参数值的时候,请用大旋钮. 注意,小心别无意撞到旋钮,免得不小心改变了设置值。
1. 增加 hf1-ic 到 150.
2. 增加 hf1-hi 到14瓦的输出 - 你需要至少12v的电源.
3. 减少 hf1-ic 直到得到 12 瓦的输出
4. 现在设置 hf1-hi使机器输出10w.
5. 在hf2和hf3上重复以上步骤
你可能也需要改变hf1-l3 使其输出 5瓦,这样当你不需要10w输出的时候省电
如果你使用的是射频电压表,以下为电压与功率的对应关系0.5w=5v 1w=7v 2.5w=11v
5w=16v
10w=22v
12w=24v
14w=26v.
为了避免对机器上电压指示的校准,请使用13.8v的电源 - 否则, set your supply to 13.8 volts – otherwise if you just flick over the dc volts position (item 17 - vcc) you will recalibrate it. (这句翻译不了,反正你用13.8v的电源就对了)

按下f键并保持2秒,可以保存你的设置
离线BG4IGX
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7444
只看该作者 6楼 发表于: 2010-03-25
还是加个我这样的功放吧,100w以上没问题,哈哈。
离线6c19
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467
只看该作者 7楼 发表于: 2010-03-25
想烧片片,改咯。
俺烧了4个末级功放管了,换起来容易。
不过俺还是劝楼主安心用5瓦算了,这样安全。
一定要增加功率上功放才是正着。
离线BG4IGX
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7444
只看该作者 8楼 发表于: 2010-03-25
呵       呵
离线lxps
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只看该作者 9楼 发表于: 2010-03-25
bg8am好生厉害,不光洋文了得,中文也不错!

玩业余无非一个折腾派,看看老外的做法确实很长见识。找些资料大家共享。
离线浙江HAM
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只看该作者 10楼 发表于: 2010-03-26
我的817就是加大10w用的,野外架台刚刚好,带cg300也带的起来。
离线BG4IGX
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7444
只看该作者 11楼 发表于: 2010-03-26
10w和5w区别还是挺大的,30w最好,不大不小,容易通到电台。