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VX-5R的扩频问题

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发表于 2002-3-13 18:37:41 | 显示全部楼层 |阅读模式
Expanded range

RX 137 - 174 MHz

TX 140 - 174 MHz

TX 420 - 470 MHz

Remove Battery and Antenna .





Remove the cover for Pressure Sensing Unit (SU-1). See Owner Manual





Remove the SU-1 Option board (if installed)





Locate solder pads on lower left side.





Remove solder from the fourth pad from the left (JP5)





Reassemble the radio





Reset the microprocessor. (Press and hold [ MR ] & [ VFO] & [4 ] and turn on the radio.



深圳的价格怎么会比北京差这么多?还能往下侃多少?看清楚是不是原装锂电还有天线和充电器,如果真是那样的话,可以让人从深圳带了



----登高使人心旷,临流使人意远;读书于雨雪之夜,使人神清;舒啸于丘阜之巅,使人兴迈----<P ID="edit"><FONT class="small"><EM>Edited by 金丝猴 on 2002/03/13 18:39.</EM></FONT></P>
发表于 2002-3-13 18:42:08 | 显示全部楼层

"TX 420 - 470 MHz"?

还是不能与409-410MHZ的中国CB机通话?如T6200C

2400还是开价,估计至少可以砍100。我的数量太少,只有一台,数量多应该好谈一些。

配件和包装非常好,电池我仔细看过,是锂电,不象假的。SN号与质保书相同。<P ID="edit"><FONT class="small"><EM>Edited by 钛十三 on 2002/03/13 18:46.</EM></FONT></P>
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 楼主| 发表于 2002-3-13 18:53:47 | 显示全部楼层

Freeband Modification

Modification Notes for all 1st, 2nd, & 3rd Generation VX-5R's

Note: All 1,2 and 3rd Generations of the VX-5R ultimately modify the same way, but the original factory Solder Ball configurations are different.  I've seen some mods posted that remove the 6th jumper also during the Freeband mod.  What I do know is that with the 6th Jumper soldered, all repeater offsets in the 2M & 70Cm bands are correct for the USA bandplan.  For the USA version, so far there is no way to open the cellular bands, or the cellular "images" in the 900Mhz range.  The farther you get away from the amateur band, the lower the transmitted power will be.  When you get to the extreme edges of the extended TX bands the radio might show its transmitting, but actually there is little or no power even though the display shown full scale on TX.  The radio's VCO might not even lock at the band edges - this is normal.  

Note: When using the ADMS-1(X) software, after you mod your VX-5R, you will must create a new template file in order for the ADMS software to recognize the mod and properly upload to the VX-5R.  If you do not create a new template file, you will get an error trying to upload your freqs to the VX-5R.  Simply create a new template file, and delete your old one.







Step 2: Figure out what Generation VX-5R you have

  Mars/Cap or Freeband Modification For 1st & 2nd Generation VX-5R's

1) Remove Battery

2) Remove the Sticker/Cover for the Pressure Sensing Unit (SU-1)



3) Remove the SU-1 Pressure Sensing Unit Option Board (if installed)



4) Factory Configuration for USA VX-5R is X X X O O O X X (X = No Solder Ball  O = Solder Ball)



5) For Mars/Cap, Remove The 4th Solder Ball - Your jumpers should look like this X X X X O O X X (X = No Solder Ball  O = Solder Ball)



6) For Freeband, Remove The 4th & 5th Solder Balls - Your jumpers should look like this X X X X X O X X (X = No Solder Ball  O = Solder Ball)



7) Reassemble Radio and Reset The Radio (Pwr-Mr-VFO-4) - You will loose all stored memory channels and custom settings and the radio is now modified



     Specific information on all 8 solder jumpers can  be found here.



Mars/Cap Modification Will Expanded Transmit Frequencies to:

50Mhz to 54Mhz

140Mhz to 174Mhz

420Mhz to 470Mhz



Freeband Modification Will Expanded Transmit Frequencies to:

48Mhz to 69.995Mhz

108Mhz to 221.995Mhz

300Mhz to 579.9875Mhz





  Mars/Cap or Freeband Modification For 3rd Generation VX-5R's

1) Remove Battery

2) Remove the Sticker/Cover for the Pressure Sensing Unit (SU-1)



3) Remove the SU-1 Pressure Sensing Unit Option Board (if installed)



4) Factory Configuration for USA VX-5R usually looks like X X X O O X X X   (X = No Solder Ball  O = Solder Ball)



5) For Mars/Cap, Remove The 4th Solder Ball and Solder A Ball on the 6th Jumper (see note below)  - Your jumpers should look like this X X X X O O X X



6) For Freeband, Remove The 4th & 5th Solder Balls and Solder A Ball on the 6th Jumper - Your jumpers should look like this X X X X X O X X



7) Reassemble Radio and Reset The Radio (Pwr-Mr-VFO-4) - You will loose all stored memory channels and custom settings and the radio is now modified



     Specific information on all 8 solder jumpers can  be found here.



Mars/Cap Modification Will Expanded Transmit Frequencies to:

50Mhz to 54Mhz

140Mhz to 174Mhz

420Mhz to 470Mhz



Freeband Modification Will Expanded Transmit Frequencies to:

48Mhz to 69.995Mhz

108Mhz to 221.995Mhz

300Mhz to 579.9875Mhz







----登高使人心旷,临流使人意远;读书于雨雪之夜,使人神清;舒啸于丘阜之巅,使人兴迈----
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发表于 2002-3-13 18:57:08 | 显示全部楼层

好复杂呀!有谁能做么?我自己做可不敢呀!

最好是深圳的!北京也行呀!
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发表于 2002-3-13 19:02:23 | 显示全部楼层

干吗一定要买T6200,韩国maycom的一对EH-465 FRS也不过550左右。

实际发射功率还在0.7W. M记的FRS和T6200C的实测发射功率都在0。4W以下。
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发表于 2002-3-14 09:42:51 | 显示全部楼层

不能在409发射是个问题,日后在409频段的机器肯定越来越多

13,帮忙看看Kenwood TH-G71A卖多少钱?

--== [blue]阴晴圆缺在窗外,心中一片艳阳天[/blue] ==--
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 楼主| 发表于 2002-3-14 11:19:26 | 显示全部楼层

其实一点也不复杂

刚才的贴子已经说得很清楚了。VX-5R第一代、二代、三代的产品其实扩频方法都一样:

1、取下电池;

2、按随时附带的VX-5R电路图找到SU-1

3、揭开SU-1的表壳,可以发现

4、原厂的SU-1跳线状态应该为X X X O O O X X (X = 断开 O = 焊接)

5、有两种跳频方法:一种是Mars/Cap扩频方法,可扩至:

    TX:50Mhz to 54Mhz  140Mhz to 174Mhz  420Mhz to 470Mhz

    另一种是Freeband扩频方法,可扩TX至:

    48Mhz to 69.995Mhz 108Mhz to 221.995Mhz 300Mhz to 579.9875Mhz

6、Mars/Cap扩频法:将SU-1跳线的第四个焊接断开即可

   Freeband扩频法:将SU-1跳线的第四、第五个焊接断开即可



未曾实际操作,有关扩频风险本人概不负责!:)

----登高使人心旷,临流使人意远;读书于雨雪之夜,使人神清;舒啸于丘阜之巅,使人兴迈----
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发表于 2002-3-14 14:24:02 | 显示全部楼层

71a价格

这里每个卖对讲机的都有71A,开价单机+天线1600,另外买国产电池、充电器。
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匿名  发表于 2002-3-15 16:54:04

有好多机型可以在400--470啊,为什么只选5R ?:0

比如:键伍的TH-42AT、TH G71A、TK308(2)等等,都比5R便宜,
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匿名  发表于 2002-3-15 16:55:15

找我扩频吧,呵呵。

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