R7 Matching Network Uinit

4:1   ;    T200-2 11T    or    FT240-61 6T
1:1 Choke Balun  FT240-61 10T

 

 

BALUN(BALanced-to-UNbalanced) : ÆòÇü¾ÈÅ׳ª¿¡ ºÒÆòÇü ±ÞÀü¼±(µ¿ÃàÄÉÀ̺í)À¸·Î ±ÞÀüÇÒ ¶§ »ç¿ëÇÏ´Â matching transformer

 


Set up the traps

Traps

Cushcraft Test
Signal generator and oscilloscope

HL1INF Test
MFJ259 Analyzer

EI7BA Test
MFJ259 Analyzer

Trap Coil
LCM KIT

Cap.calculation

TV1  10m
         12m 

28.00 MHz 24.00 MHz

26.28 MHz
23.05
 MHz

26.5 MHz
23.2
 MHz

0.789 uH
0.780 uH

40.9 pF
56.3 pF

TV2  15m

21.20 MHz

20.04 MHz

20.05 MHz

1.923 uH

29.3 pF

TV3  17m

18.11 MHz

17.16 MHz

17.5 MHz

2.806 uH

27.5 pF

TV4  20m

14.47 MHz

12.63 MHz

12.85 MHz

8.270 uH

14.6 pF

TV5  30m

10.25 MHz

9.705 MHz

9.73 MHz

5.819 uH

41.4 pF

 

 



MFJ-1625

 

Fishing Line    No.80 : 1.44pi,    No.50 : 1.20pi   

 

 

RG214

 

SO-239 Antenna

By David White, WA7YFF

Awhile back, I got to talking with someone in the club about this antenna. Unfortunately, I can't remember who it was, so I thought I would just make these instructions available to everyone. This is, after all, a very nice and easy antenna. I built a 2m version of this about a month after getting my Novice license, KB5QZP (but I had to wait until I upgraded to Technician Plus, KB5RRM before I could use it!). I followed the instructions exactly and I still use the antenna today. It has a beautiful 1:1.2 SWR up and down the voice portion of 2m and 440 bands. Enjoy!

 

One of the simplest antennas you can build is a quaterwave ground plane antenna. It is small in size and is inexpensive. The only part you will need to buy is an SO-239 panel mount connector. You can use an old wire hanger for the radiator and radials. You will need to use your soldering iron or gun to attach the Radiator to the center post of the SO=239. File any paint or coating from the radiator wire before soldering. Cut the radiator to the proper length before soldering it. If you can find a short copper tube to help secure the radiator to the SO-239, your antenna will stand up to high winds.

 

The radials may be soldered or attached with screws. Screws are the easier method if you take the time to overlap them as shown in the diagram. Cutting the radials may be done after the construction is complete.

The following charts are in decimal inches.

 

FREQ RADIATOR RADIAL
423.0 6.64 6.97
424.0 6.62 6.95
425.0 6.61 6.94
426.0 6.59 6.92
427.0 6.58 6.90
428.0 6.56 6.89
429.0 6.55 6.87
430.0 6.53 6.86
431.0 6.52 6.84
432.0 6.50 6.82
433.0 6.48 6.81
434.0 6.47 6.79
435.0 6.46 6.78
436.0 6.44 6.76
437.0 6.43 6.75
438.0 6.41 6.73
439.0 6.40 6.72
440.0 6.38 6.70
441.0 6.37 6.68
442.0 6.35 6.67
443.0 6.34 6.65
444.0 6.32 6.64
445.0 6.31 6.62
446.0 6.30 6.61
447.0 6.28 6.60
448.0 6.27 6.58
449.0 6.25 6.57
450.0 6.24 6.55
FREQ RADIATOR RADIAL
144.0 19.50 20.47
144.5 19.43 20.40
145.0 19.37 20.33
145.5 19.30 20.26
146.0 19.23 20.19
146.5 19.17 20.12
147.0 19.10 20.05
147.5 19.04 19.99
148.0 18.97 19.92
FREQ RADIATOR RADIAL
50.0 56.16 58.96
50.5 55.60 58.38
51.0 55.06 57.80
51.5 54.52 57.24
52.0 54.00 56.69
52.5 53.49 56.15
53.0 52.98 55.62
53.5 52.49 55.10
54.0 52.00 54.59
10 Meter Band
FREQ RADIATOR RADIAL
28.1 99.93 104.91
28.2 99.57 104.54
28.2 99.22 103.80
28.4 98.87 103.80
28.5 98.53 103.44
28.6 98.18 103.08
28.7 97.84 102.72
28.8 97.50 102.36
28.9 97.16 102.01
29.0 96.83 101.66
29.1 96.49 101.31
29.2 96.16 100.96
29.3 95.84 100.61
29.4 95.51 100.27
29.5 95.19 99.93
29.6 94.86 99.59
29.7 94.55 99.26
29.8 94.23 98.93
29.9 93.91 98.60
       

 

If you are just starting out or have the desire to build an antenna here is a simple and fun project. This antenna is perfect for those hams living in the primary coverage area of the .075 repeater. The radials can be made of no. 12 copper wire. The vertical radial (A) should be soldered to the center connector of the SO239. The four base radials (B & C) and (D & E) can be soldered or bolted to the SO239 mounting holes using 4-40 hardware. The four base radials then should be bend downward to a 45 degree angle. The antenna can be mounted by clamping the PL259 to a mast or even passing the coax through a 3/4 ID PVC pipe and compression clamping the PL259. Either way let your creativity flow. If you plan on mounting it outside experience teaches to apply RTV or sealant around the center pin to keep water out of the coax.

Make each radial a 1/4 wave of your desired frequency. Sometimes it helps to add a little extra
length to the radials. This will give you some snipping room when you adjust the SWR.
example calculation:
Freq (mhz)    A (inches)    B&C/D&E (inches)
146 mhz            19-5/16            20-3/16

 

 

 

ºûÀÇ ¼Óµµ(¸ðµç Á¾·ùÀÇ ÀüÀÚ±âÆÄÀÇ ¼Óµµ)´Â Áø°ø¿¡¼­ Á¤È®È÷ ÃÊ¼Ó 299,792,458 ¹ÌÅÍÀÌ´Ù
Heat Shrink Tubing

 

BALUN(BALanced-to-UNbalanced)¿ªÇÒ°úÁ¾·ù  

BALUN(BALanced-to-UNbalanced)
BALUN ÀÇ ¿ªÈ°
BALUNÀº BALanced-to-UNBalanced¿¡¼­ À¯·¡µÈ ÇÕ¼º¾î·Î  ÆòÇü¾ÈÅ׳ª¿¡ ºÒÆòÇü ±ÞÀü¼±(µ¿ÃàÄÉÀ̺í)À¸·Î ±ÞÀüÇÒ ¶§ »ç¿ëÇÏ´Â matching transformer¸¦ ÀǹÌÇÑ´Ù.

¾ÈÅ׳ªÀÇ Á¾·ù´Â ±ÞÀüÁ¡À» ±âÁØÀ¸·Î Çؼ­ ±× ±¸Á¶¿¡ µû¶ó ÆòÇü¾ÈÅ׳ª¿Í ºÒÆòÇü¾ÈÅ׳ª·Î ±¸ºÐÇÒ ¼ö Àִµ¥ ¾Æ¸¶Ãß¾î ¹«¼±¿¡¼­ °¡Àå ¸¹ÀÌ »ç¿ëµÇ´Â ´ÙÀÌÆú °ú ¾ß±â¾ÈÅ׳ª µîÀº ±ÞÀüºÎ¸¦ ±âÁØÀ¸·Î Çؼ­ ´ëĪÀ¸·Î µÇ¾î ÀÖ´Â ÆòÇü ¾ÈÅ׳ªÀÌ´Ù. ¹Ý¸é ¼Û½Å±âÀÇ °íÁÖÆÄ Àü·ÂÀ» ¾ÈÅ׳ª¿¡ °ø±ÞÇÏ´Â ±ÞÀü¼±(FEED LINE)Àº ½É¼±(hot)À» ¿ÜºÎµµÃ¼(cold)·Î µÑ·¯½Ñ ÇüÅÂÀÇ ºÒÆòÇü FEED LINEÀÎ µ¿ÃàÄÉÀ̺íÀÌ ÁÖ·Î »ç¿ëµÇ´Âµ¥ À̶§ ¼º°ÝÀÌ °¢°¢ ´Ù¸¥ ½É¼±(Hot-line)°ú Â÷Æó¼±(Cold-line)À» ÆòÇü¾ÈÅ׳ªÀÇ ±ÞÀüÁ¡¿¡ Á÷Á¢ ¿¬°áÇÏ¸é ¾ÈÅ׳ªÀÇ ¾çÂÊ µµ¼±ÀÇ Àü·ù ºÐÆ÷°¡ ºÒÆòÇüÀ» ÀÌ·ç°Ô µÇ°í ÀÌ·Î ÀÎÇØ Àü·ùÀÇ ÀϺΰ¡ ¿ÜºÎµµÃ¼(Â÷Æó¼±)¸¦ µû¶ó µÇµ¹¾Æ ¿À°Ô µÇ´Âµ¥ À̸¦ ´©¼³ Àü·ù¶ó ÇÑ´Ù.  ÀÌ ´©¼³Àü·ù´Â ¿©·¯°¡Áö ºÎÁ¤ÀûÀÎ ¿µÇâÀ» ¹ÌÄ¡°Ô µÇ´Âµ¥ À̸¦ ¹æÁöÇϱâ À§ÇÏ¿© ¹Ù·éÀ» »ç¿ëÇÑ´Ù. µû¶ó¼­ ¹Ù·éÀº ±âº»ÀûÀ¸·Î ¾ÈÅ׳ª ÀÓÇÇ´ø½º¸¦ ¸ÞĪ ½ÃÅ°±â À§ÇÑ °ÍÀÌ ¾Æ´ÔÀ» ÀÌÇØ ÇÏ¿©¾ß ÇÑ´Ù.

±×¸®°í Àü·ùºÐÆ÷ÀÇ ºÒÆòÇü Á¤µµ´Â ¾ÈÅ׳ª µµ¼±ÀÇ ±æÀÌ¿Í µ¿ÃàÄÉÀ̺íÀÇ Á÷°æÀÇ ºñ¿¡ ÀÇÇؼ­ °áÁ¤µÈ´Ù. µû¶ó¼­ HF´ëÀÇ LOW BAND ¿¡¼­´Â ¾ÈÅ׳ª µµ¼±ÀÇ ±æÀÌ°¡ ±æ°í ±×¿¡ ºñÇÏ¿© µ¿ÃàÄÉÀ̺íÀÇ Á÷°æÀº ÀÛÀ¸¹Ç·Î ºÒÆòÇüÀº ±×´ÙÁö Å©Áö ¾ÊÀ¸¹Ç·Î ´©¼³ Àü·ù´Â Å©Áö ¾Ê¾Æ ±×·Î ÀÎÇÑ ºÎÀÛ¿ëµµ ¹®Á¦°¡ µÇÁö ¾ÊÀ» ¼ö ÀÖÁö¸¸ ´ëÃâ·ÂÀ» ¼ÛÃâ ÇÑ´ÙµçÁö ÀüÆÄÀÇ ¿µÇâÀ» ¹Þ±â ½¬¿î ±â±âµéÀÌ ÁÖº¯¿¡ ÀÖ´Ù¸é ¹®Á¦°¡ µÉ ¼ö ÀÖ´Ù. VHF¿Í UHV¿¡¼­´Â HF´ë¿Í´Â ´Þ¸® ºÒÆòÇüÀÇ Á¤µµ°¡ Ä¿ ±× ¿µÇâÀÌ Å©´Ù.

BALUNÀÇ Á¾·ù

¹Ù·é¿¡´Â ±× ±¸Á¶¿Í ¿ëµµ¿¡ µû¶ó ¿©·¯ °¡ÁöÀÇ Á¾·ù°¡ Àִµ¥ BlancingÀ» ÇÏ´Â ¹æ¹ý¿¡ µû¶ó Àü¾Ð(VOLTAGE)¹Ù·é°ú Àü·ù(CURRENT)¶Ç´Â ÃÊÅ©(CHOKE)¹Ù·éÀÌ ÀÖ´Ù. ±×¸®°í ÀÓÇÇ´ø½º Ýï¿¡ µû¶ó¼­ 1:1, 2:1, 4:1, 6:1, µî ¿©·¯°¡Áö ¹Ù·éÀÌ ÀÖÀ¸¸ç °¢°¢ÀÇ Æ¯Â¡°ú ¿ëµµ´Â ´ÙÀ½°ú °°´Ù.

BLANCING ÇÏ´Â ¹æ¹ý¿¡ ÀÇÇÑ ¹Ù·éÀÇ Á¾·ù
1. Àü¾Ð¹Ù·é: BALUNÀÇ OUPUT ´ÜÀÚ(¾ÈÅ׳ª ¿¬°áÃø)¿¡ ¹Ý´ë ±Ø¼ºÀ» °¡Áø °°Àº Å©±âÀÇ Àü¾ÐÀÌ ³ªÅ¸³ªµµ·Ï ÇÏ¿© °á°úÀûÀ¸·Î Àü·ù¸¦ Balncing À» Çϵµ·Ï ¼³°èµÈ °ÍÀ̸ç ÀÌ´Â ¾ÈÅ׳ªÀÇ ¾çÃø µµ¼±ÀÇ ±æÀÌ°¡ ¿ÏÀüÇÏ°Ô ´ëĪÀÓÀ» ÀüÁ¦·Î ÇÑ °ÍÀÓÀ¸·Î ¾ÈÅ׳ª ¾çÃø µµ¼±ÀÌ ºÒÆòÇü ÀÏ ¶§(½ÇÁ¦ ±æÀ̻Ӹ¸ ¾Æ´Ï¶ó ±× Çüŵµ Æ÷ÇÔÇÏ¿©) ±×·¸Áö ¾ÊÀ» °æ¿ì´Â ´©¼³ Àü·ù°¡ È帣°Ô µÇ´Â µî ¾ÈÅ׳ª ¾çÃø µµ¼±ÀÇ ºÒÆòÇü¿¡ ¹Î°¨ÇÏ´Ù. µû¶ó¼­ ¾ÈÅ׳ªÀÇ ÇÑÂÊ µµ¼±À» ±æ°Å³ª ª°Ô ÇÏ¿© SWRÀ» Á¶Á¤ÇÏ°Ô µÇ¸é(Á¤ÀçÆĺñ°¡ Àß ¾È ¸ÂÀ»¶§ °£È¤ ±×·¸°Ô ÇÏ´Â °æ¿ìµµ ÀÖ´Ù.) ¾ÈÅ׳ª ¾çÃøµµ¼±ÀÇ ±æÀÌÀÇ ÆíÂ÷¿¡ ÀÇÇØ Àü·ù ºÐÆ÷°¡ UNBLANCE°¡ µÇ¾î ´©¼³ Àü·ù°¡ È帣°Ô µÈ´Ù.

¾Æ·¡ ±×¸²Àº ´ëÇ¥ÀûÀÎ Àü¾Ð¹Ù·éÀÇ È¸·Îµµ ÀÌ´Ù. ¾Æ·¡±×¸²¿¡¼­ °¡¿îµ¥ ÄÚÀÏÀÇ ÀÓÇÇ´ø½º°¡ ³Ê¹« ³·°Ô µÇ¸é ³·Àº ÁÖÆļö ³¡ ÂÊ¿¡¼­ SWRÀÌ ³ô°Ô µÇ´Â °æÇâÀÌ ÀÖ´Ù. ±×¸®°í ¾Æ·¡ ȸ·Îµµ¿¡¼­ ¾Ë ¼ö ÀÖµíÀÌ ¾çÂÊ ´ÜÀÚ¸¦ ȸ·Î ½ÃÇè±â·Î ½ÃÇèÀ» ÇßÀ» ¶§ ȸ·Î°¡ ´Ü¶ô µÈ °ÍÀ¸·Î ³ªÅ¸³ª´Â °ÍÀÌ Á¤»óÀÌ´Ù.

2. Àü·ù¹Ù·é: ÃÊÅ© ¶Ç´Â Àü·ù¹Ù·éÀº Àü¾Ð¹Ù·é°ú´Â ´Ù¸£°Ô ¾ÈÅ׳ª µµ¼±»óÀÇ Àü·ù¸¦ blancing ½ÃÅ°´Â °ÍÀÌ ¾Æ´Ï°í ´©¼³Àü·ù°¡ µ¿ÃàÄÉÀ̺íÀÇ ¿ÜºÎµµÃ¼·Î È帣´Â °ÍÀ» Á÷Á¢ Â÷´Ü ÇÑ´Ù. µû¶ó¼­ ¾ÈÅ׳ª°¡ ¿ÏÀüÇÑ ÆòÇüÀÌ ¾Æ´Ï¶óµµ ¿µÇâÀÌ ÀûÀ¸¸ç È¿°úÀû ´©¼³Àü·ù¸¦ Â÷´ÜÇÑ´Ù.

À§¿¡¼­ º» ¹Ù¿Í °°ÀÌ Àü¾Ð¹Ù·é¿¡ ºñÇÏ¿© Àü·ù¹Ù·éÀÌ ÀåÁ¡µµ ÀÖÀ¸³ª °¢°¢ÀÇ È¸·Îµµ¿¡¼­ º¸´Â°Í°ú °°ÀÌ Àü¾Ð¹Ù·éÀº DC ±×¶ó¿îµå°¡ µÇ¾îÀÖ´Â ¹Ý¸é Àü·ù¹Ù·éÀº DC ±×¶ó¿îµå°¡ µÇ¾î ÀÖÁö ¾Ê´Ù. µû¶ó¼­ Àü·ù¹Ù·éÀÇ °æ¿ì ³«·Ú¿¡ ÀÇÇÑ ½áÁö Àü·ù¿¡ Æ®·£½Ã¹ö°¡ ¼Õ»óµÇ±â ½±´Ù. ±×·³¿¡µµ ºÒ±¸ÇÏ°í ´Ù¸¥ ÀåÁ¡ ¶§¹®¿¡ Àü·ù ¹Ù·éÀÌ Á¡Á¡ ¸¹ÀÌ »ç¿ëµÇ¾îÁö°í ÀÖ´Â Ãß¼¼´Ù. ±×¸®°í Àü·ùÇü¹Ù·éÀÇ ±¸º° ¹ýÀº ¾Æ·¡ ±×¸²¿¡¼­ ¾Ë ¼ö ÀÖµíÀÌ È¸·Î½ÃÇè±â·Î ½ÃÇèÇÏ¸é ¾çÂÊ ´ÜÀÚ°¡ ¿­·ÁÀÖ´Ù.

ÁÖ¿ä Àü·ùÇü¹Ù·éÀÇ Á¦Á¶ ÆǸÅó´Â The RADIO WORKS À̸ç INTERNET¿¡¼­ ONLINEÀ¸·Î ½±°Ô ±¸ÀÔ °¡´ÉÇÏ´Ù.

Àü·ùÇü¹Ù·éÀÇ ÇϳªÀÎ Air Core Balun(ÃÊÅ©¹ß¿î)Àº °¡Àå °£´ÜÇÑ ÇüÅ·μ­ µ¿ÃàÄÉÀ̺íÀ» ¾ÈÅ׳ª Á¢¼ÓÁöÁ¡¿¡¼­ Àû´çÇÏ°Ô °¨¾ÆÁÖ¸é µÈ´Ù. °¨´Â ȸ¼ö¿Í Á÷°æÀº ´ÙÀ½ Ç¥¸¦ Âü°í ¹Ù¶÷.
Single Band
--------------------------------------
ÁÖÆļö(MHz) / RG 213, RG 8 /   RG 58
---------------------------------------
3.5                 22ft, 8ȸ         20ft, 6-8ȸ
7                   22ft, 10ȸ       15ft, 6ȸ
10                 12ft, 10ȸ       10ft, 7ȸ
14                 10ft, 4ȸ          8ft, 8ȸ
21                  8ft, 6-8ȸ       6ft, 8ȸ
28                  6ft, 6-8ȸ       4ft, 6-8ȸ
--------------------------------------

Multiple Band
-----------------------------------
ÁÖÆļö(MHz) / RG-8, 58, 59, 8X, 213
------------------------------------
3.5-30                     10ft, 7ȸ
3.5-10                     18ft, 9-10ȸ
14-30                      8ft, 6-7ȸ
-----------------------------------

°¨´Â ¹æ¹ý: 3.5-30Mhz¿ë ¾ÈÅ׳ªÀÇ °æ¿ì 10ftÀÇ µ¿ÃàÄÉÀ̺íÀ» 7ȸ °¨¾ÆÁÖ¸é( ÈçÈ÷ ³²´Â Àü¼±À» »ç¸®µíÀÌ ÇÏ¿© °¨À¸¸é µÊ) Á÷°æÀº ÀúÀý·Î Àû´çÈ÷ ³ª¿À¸ç °¨Àº ÈÄ Å×ÀÌÇÁ µîÀ¸·Î Àû´çÈ÷ °¨¾Æ ÇüÅ°¡ ÈåÆ®·¯ÁöÁö ¾Êµµ·Ï ÇÑ´Ù.

Ferrite¸¦ »ç¿ëÇÏ´Â ¹Ù·éÀº SWRÀÌ ³ô°Å³ª °íÃâ·ÂÀ¸·Î ¿î¿ëÇÏ¸é ½±°Ô Æ÷È­°¡ µÇ¾î °íÁ¶ÆÄ ¿¡³ÊÁö¸¦ ¹ß»ý ½Ãų ¼ö ÀÖÀ¸¹Ç·Î ÁÖÀÇÇÏ¿©¾ß Çϴµ¥ Air Core BalunÀº ÀÌ·± Çö»óÀÌ ¹ß»ýµÇÁö ¾Ê´Â´Ù.

±× ¿ÜÀÇ Àü·ùÇü ¹Ù·é ¿¡´Â Ferrite-Core Balun °ú W2DU ¹Ù·éµîÀÌ ÀÖÀ¸¸ç ±×´ÙÁö ¸¸µé±â°¡ ¾î·ÆÁö´Â ¾ÊÀ¸³ª Á¦Ç°È­µÈ °ÍÀ» ±¸ÀÔ »ç¿ëÇÏ´Â ÆíÀÌ ´õ Æí¸®ÇÑ °Í °°´Ù. ±»ÀÌ ÀÚÀÛÀ» Çغ¸°Ú´Ù¸é Amidon»ç³ª Fair-Rite Products Corp¿¡¼­ ¿©·¯°¡Áö  TORAIDAL CORE¸¦ Á÷Á¢ ±¸ÀÔÇÏ¿© ÀÚ±â¿ëµµ¿¡ ¸Â´Â ¹Ù·éÀ» ¼³°è Á¦ÀÛÇÒ ¼ö µµÀÖ°í KITÈ­ µÈ °Íµµ ±¸ÇÒ ¼ö ÀÖ´Ù.

<Âü°í>Transmitting Baluns by W8JI
<Âü°í>Balun and Transformer Core Selection by W8JI


ÀÓÇÇ´ø½º Ýï¿¡ µû¸¥ ¹Ù·éÀÇ Á¾·ù
¹Ù·éÀº ÀÌ¹Ì ¼³¸íÇÑ ¹Ù¿Í °°ÀÌ ÆòÇü ¾ÈÅ׳ª¿Í ºÒÆòÇü ±ÞÀü¼±(µ¿ÃàÄÉÀ̺í)À» ¿¬°á ½ÃÄÑÁÖ´Â °ÍÀÌ º»·¡ÀÇ ¿ªÇÒÀÌ°í ÀÓÇÇ´ø½º¸¦ ¸ÞĪ ½ÃÅ°±â À§ÇÑ °ÍÀÌ ¾Æ´Ï´Ù. ±×·¯³ª ƯÁ¤ ÀÓÇÇ´ø½º Ý︦ °¡Áø ¹Ù·éÀº ÀÓÇÇ´ø½º Á¤ÇÕ ¿ªÇÒµµ µ¿½Ã¿¡ Çϴµ¥ ÀÓÇÇ´ø½º ºñ¿¡ µû¸¥ Á¾·ù¿Í ¿ëµµ´Â °¢±â ´ÙÀ½°ú °°´Ù.

1:1 ¹Ù·é-50ohms balanced to 50 ohms unbalanced
ÀϹÝÀûÀ¸·Î °¡Àå ¸¹ÀÌ ¾²ÀÌ´Â ¹Ù·éÀ¸·Î ¹ÝÆÄÀå ´ÙÀÌÆú¾ÈÅ׳ª¿¡ »ç¿ëµÇ¸ç ÀÓÇÇ´ø½º ¸ÞĪ ±â´ÉÀº ¾ø´Ù. ´ÙÀÌÆú¾ÈÅ׳ªÀÇ ±ÞÀü ÀÓÇÇ´ø½º´Â Áö»ó°í°¡ ÃæºÐÇÒ °æ¿ì ¾à 73¿À¿È Á¤µµÀ̹ǷΠ1:1 ¹Ù·éÀ» »ç¿ëÇϸé SWRÀÌ 1:5Á¤µµ°¡ µÇÁö¸¸ ½Ç¿ë»ó ÀüÇô ÁöÀåÀÌ ¾ø´Ù.
´ÙÀÌÆú ¾ÈÅ׳ª´Â Áö»ó°í¿¡ µû¶ó ±ÞÀü ÀÓÇÇ´ø½º°¡ º¯ÇÔ<Âü°í: ¾ÈÅ׳ªÀÇ Áö»ó°í¿Í ÀÓÇÇ´ø½º>

1.5:1 ¹Ù·é-75ohms balanced to 50ohms unbalanced
¹ÝÆÄÀå ´ÙÀÌÆú ¾ÈÅ׳ªÀÇ ÀÓÇÇ´ø½º°¡ ¾à 75 ohm À̹ǷΠÀ̶§ 1.5:1 ¹Ù·éÀ» ¾²¸é Á¤ÇÕÀÌ ¿Ïº®ÇÏ´Ù. ±×·¯³ª 1:1 ¹Ù·éÀ̳ª ¹Ù·é¾øÀÌ Á÷°áÇÏ¿©µµ SWRÀº 1.5 Á¤µµ·Î ±×´ÙÁö ³ôÁö ¾ÊÀ¸¹Ç·Î ½Ç¿ë»ó Å« ÁöÀåÀº ¾ø´Ù.

2:1 ¹Ù·é - 100 ohms balanced to 50 ohms unbalanced
Áö»ó°í°¡ 0.33 ÆÄÀåÀÎ ¹ÝÆÄÀå ´ÙÀÌÆú °ú »ç°¢ Loop ¾ÈÅ׳ªÀÇ ¾ÈÅ׳ª´Â ±ÞÀüºÎ ÀÓÇÇ´ø½º°¡ 100 ohmÁ¤µµ·Î 2:1 ¹Ù·éÀÌ ÇÊ¿äÇÏ´Ù.

4:1 ¹Ù·é - 200 ohms balanced to 50 ohms unbalanced
Log Periodic Beam Antenna, Áö»ó°í 0.17 ÆÄÀåÀÇ Folded Dipole, Off Center Fed Antenna( ¾ÈÅ׳ªÀÇ ±ÞÀüÁ¡ÀÌ ¾ÈÅ׳ª µµ¼±ÀÇ Áß¾Ó¿¡ ÀÖÁö ¾Ê°í Æí½ÉµÈ ¾ÈÅ׳ª¸¦ ¸»Çϴµ¥ ±ÞÀüÁ¡ÀÌ Áß¾ÓÀ» ¹þ¾î³ª¸é ÀÓÇÇ´ø½º°¡ ¿Ã¶ó°¨)µî ±ÞÀüÁ¡ÀÇ ÀÓÇÇ´ø½º°¡ ºñ±³Àû ³ôÀº ¾ÈÅ׳ª¿¡ ¾²ÀδÙ.

4:1 Step Down balun-12.5 ohms balanced to 50 ohms unbalanced
À§ÀÇ 4:1 ¹Ù·é°ú´Â ´Þ¸® ±ÞÀüÁ¡ÀÇ ÀÓÇÇ´ø½º°¡ ³·Àº ¾ÈÅ׳ª¿¡ »ç¿ëµÇ´Â Step downÇü ¹Ù·éÀÌ´Ù. ¾ß±â¾ÈÅ׳ª´Â ´ÙÀÌÆú¾ÈÅ׳ªÀÇ ¾ÕµÚ¿¡ ¼ÒÀÚ¸¦ ´Ã·Á³õÀº °ÍÀε¥ ¼ÒÀÚ¼ö¸¦ ´Ã·Á°¨¿¡ µû¶ó ±ÞÀüÁ¡ÀÇ ÀÔÇÇ´ø½º°¡ ´ÙÀÌÆú ¾ÈÅ׳ªÀÇ ±âº» ÀÓÇÇ´ø½ºÀÎ  75¿À¿È ¿¡¼­ Á¡Á¡ ³·¾ÆÁ®10 - 20 Á¤µµ·Î ³·¾ÆÁø´Ù. µû¶ó¼­ Step Down 4:1 ¹Ù·éÀ» »ç¿ëÇϸé Ưº°ÇÑ ¸ÞĪ ±â±¸ ¾øÀÌ ¾ß±â¾ÈÅ׳ª¸¦ ±ÞÀü ÇÒ ¼ö ÀÖ´Ù. ¾ß±â ¾ÈÅ׳ª¿¡µµ ±ÞÀüÁ¡ÀÇ ÀÓÇÇ´ø½º¸¦ ³ôÀÌ´Â ¸ÞĪ¹æ½ÄÀ» »ç¿ëÇϸé 1:1 ¹Ù·éÀ» ¾µ ¼ö ÀÖ´Ù.

±× ¿Ü¿¡µµ ¿©·¯ °¡Áö ÀÓÇÇ´ø½º ºñ¸¦ °¡Áø ¹Ù·éÀ» Ư¼öÇÑ ¿ëµµ¿¡ µû¶ó Á¦ÀÛ ÇÒ¼ö Àִµ¥ ÀÚ¼¼ÇÑ °ÍÀº ¾Æ·¡ÀÇ Ã¥À» Âü°í Çϱ⠹ٶõ´Ù.

Building and using Balun and Ununs by Jerry Sevick, W2FMI - CQ communications, Inc
Transmission Line Transformers by Jerry Sevick, W2FMI - Noble Publishing Atlanta

UNUN(Unbalanced to unbalanced transformers)
¹Ù·éÀÌ ºÒÆòÇü ±ÞÀü¼±°ú ÆòÇü¾ÈÅ׳ª¸¦ À§ÇÑ matching transformerÀÎ ¹Ý¸é ¾ð¾ð(UNUN)Àº ºÒÆòÇü ±ÞÀü¼±°£ ¶Ç´Â ¾ÈÅ׳ª¸¦ À§ÇÑ matching transformerÀÌ´Ù. ÀÓÇÇ´ø½º ºñ¿¡ µû¶ó 50:75, 50:25, 50:100, 50:12.5, µîÀÌ ÀÖ´Ù. 50:75 UNUNÀ» »ç¿ëÇϸé ÄÉÀ̺í TV¿ë 75¿À¿È µ¿ÃàÄÉÀ̺íÀ» 50¿À¿È µ¿ÃàÄÉÀÌºí¿¡ ¿¬°áÇÏ¿© »ç¿ë ÇÒ ¼ö ÀÖ´Ù.

¡¡ ´©¼³Àü·ù°¡ °íÁÖÆÄ °èÅë¿¡ ¹ÌÄ¡´Â ¿µÇâ

1. Interference¸¦ ¹ß»ý ½ÃŲ´Ù.
µ¿ÃàÄÉÀ̺íÀÇ ¿ÜºÎ µµÃ¼¿¡ È帣´Â ´©¼³Àü·ù´Â COMMON MODE ÇüÅÂÀÇ Àü·ù·Î¼­ ÄÉÀÌºí¿¡¼­ ½±°Ô ¹æ»ç°¡ µÈ´Ù. µû¶ó¼­ µ¿ÃàÄÉÀ̺íÀÌ ÀüÈ­¼±, Àü¿ø¼± µî¿¡ Á¢ÃË ¶Ç´Â °¡±îÀÌ Á¢±ÙÇÏ¸é ´©¼³Àü·ù°¡ À¯µµµÇ¾î ¿©·¯°¡Áö INTERFERENCE¸¦ ¹ß»ý ½Ãų ¼ö ÀÖ´Ù. ÀÌ °æ¿ì¿¡´Â Low pass filter·Î´Â Interference¸¦ ¹æÁöÇÒ ¼ö ¾ø°í common mode ÃÊÅ©¸¦ ¼³Ä¡Çϰųª Á¢Áö¸¦ ¿ÏÀüÇÏ°Ô ½ÃÅ´À¸·Î½á ÀÎÅÍÆä¾î·±½º¸¦ ¾î´À Á¤µµ ¹æÁö ÇÒ ¼ö ÀÖ ´Ù. ÇÏÁö¸¸ ¿øõÀûÀ¸·Î ´©¼³Àü·ù°¡ ¹ß»ýÇÏÁö ¾Êµµ·Ï ÇÏ´Â °ÍÀÌ ÃÖ¼±Ã¥ÀÌ´Ù.

2. ¾ÈÅ׳ªÀÇ ¹æ»ç ÆÐÅÏÀÌ Àϱ׷¯ Áø´Ù.
Àü·ùÀÇ ºÒÆòÇü°ú ´©¼³ Àü·ùÀÇ ¿µÇâÀ¸·Î ¾ÈÅ׳ªÀÇ ¹æ»ç ÆÐÅÏÀÌ Àϱ׷¯Á® ÁöÇ⼺ÀÌ º¯ÇÑ´Ù. ±×·¯³ª ´ÙÀÌÆú ¾ÈÅ׳ª¿¡ÀÇ °æ¿ì¿¡´Â ¼öÆòÁöÇ⼺ ÆÐÅÏÀº ±×¸® ÁÖ¿äÇÑ ¿ä¼Ò°¡ ¾Æ´Ï¹Ç·Î ÀÌ °æ¿ì Å« ¹®Á¦°¡ µÇÁö ¾ÊÀ¸³ª yagi, quadµî°ú °°ÀÌ Beam ¾ÈÅ׳ªÀÇ °æ¿ì¿¡´Â ¿µÇâÀÌ Å©´Ù.

3. SWRÀÌ º¯ÇÑ´Ù.
À§¿¡¼­ ¼³¸í ÇÑ ¹Ù¿Í °°ÀÌ ´©¼³Àü·ù´Â µ¿ÃàÄÉÀÌºí¿¡¼­ ¹æ»ç°¡ µÇ´Âµ¥, ÀÌ´Â °ð µ¿ÃàÄÉÀ̺íÀÌ ¾ÈÅ׳ªÀÇ ÇÑ ºÎºÐÀ¸·Î¼­ µ¿ÀÛÇÔÀ» ÀǹÌÇÑ´Ù. µû¶ó¼­ µ¿ÃàÄÉÀ̺íÀÇ ±æÀ̸¦ º¯È­ ½ÃÅ°°Å³ª ¿òÁ÷À̸é(±æ°Ô ´Ã¿©³õ°Å³ª °¨¾Æ ³õ´Â µî º¯È­ ½ÃÅ°¸é) SWRÀÌ º¯ÇÑ´Ù.

³ª¿¡°Ô ¹Ù·éÀÌ ÇÊ¿äÇÑ°¡?
ÀÌ¿Í °°Àº Áú¹®Àº ¹Ù·é¿¡ °üÇÑ °¡Àå º¸ÆíÀûÀÎ Áú¹®ÀÎ °Í °°´Ù. ¹Ù·éÀÌ ¾ø´Ù°í Çؼ­, ±×¸®°í µ¿ÃàÄɺíÀÇ ¿ÜºÎµµÃ¼·Î ´©¼³Àü·ù°¡ È帥´Ù°í Çؼ­ ÀÌ°ÍÀÌ ¹Ýµå½Ã ½É°¢ÇÑ ¹®Á¦¸¦ ¾ß±â ½ÃÅ°´Â °ÍÀº ¾Æ´Ï´Ù.

±×·¯³ª ¸¸¾à ÀüÆķκÎÅÍ ¿µÇâÀ» ¹Þ´Â Àü±â, ÀüÀÚ±â±â(TV, TV ¾ÈÅ׳ª ¶Ç´Â TV¾ÈÅ׳ª ÄÉÀ̺í, ÀüÈ­ ¶Ç´Â ÀüÈ­¼±, ÄÄÇ»ÅÍ, Àü±â¹è¼±µîµî ¸ðµç Àü±âÀüÀÚ °ü·Ã ¼³ºñ)°¡ ±ÞÀü¼±(µ¿ÃàÄÉÀ̺í)¿¡ °¡±îÀÌ Á¢±ÙÇÏ¿© ÀÖ´Ù¸é, ±ÞÀü¼±ÀÇ ´©¼³Àü·ù·ÎºÎÅÍ ¼ö½ÅµÇ´Â ¹æ»çÀüÆÄ°¡ ¾ÈÅ׳ª¿¡¼­ ¹æ»çµÇ¾î Àü±âÀüÀÚ ±â±¸¿¡ µé¾î¿À´Â ÀüÆĺ¸´Ù  °­ÇÒ ¼ö ÀÖ´Ù.

µû¶ó¼­ ÀÌ·± °æ¿ì¿¡ ¸ðµç Àü±âÀüÀÚ±â±â¸¦ ±ÞÀü¼±À¸·ÎºÎÅÍ °¡´ÉÇÑ ÇÑ ¸Ö¸® ÀÌ°Ý ½ÃÅ°´Â °Íµµ Áß¿äÇÏÁö¸¸  ¹Ù·éÀ» »ç¿ëÇÏ¿© ±ÞÀü¼±ÀÇ ´©¼³ Àü·ù¸¦ ¹æÁöÇÏ¿© ±ÞÀü¼±¿¡¼­ ÀüÆĹæ»ç¸¦ ÃÖ¼ÒÈ­ ÇÔÀ¸·Î¼­ »ó´çºÎºÐÀÇ INTERFERENCE¸¦ ¹æÁöÇÒ ¼ö ÀÖ´Ù.

¹Ù·éÀ» »ç¿ëÇÔ¿¡µµ ºÒ±¸ÇÏ°í ´©¼³ Àü·ù°¡ ¹ß»ýµÇ´Â °æ¿ì

1. FEED LINE(µ¿ÃàÄÉÀ̺í)À» ¾ÈÅ׳ª µµ¼±¿¡ ´ëÇØ ¼öÁ÷À¸·Î ³»¸®Áö ¾Ê°í ¾î´À ÇÑÂÊÀ¸·Î ±â¿ï¾îÁö°Ô ÇÑ °æ¿ì.
2. ´ÙÀÌÆú¾ÈÅ׳ªÀÇ ¾çÂÊ µµ¼± Áß ¾î´À ÇÑÂÊÀÌ ±æ°Å³ª ªÀº °æ¿ì.

À¯¸í ¹Ù·é Á¦Á¶¾÷ü

ANTENNA PRODUCTS CORPORATION (»ó¾÷¿ë °íÃâ·Â ¹Ù·é)
Amidon(High power ¹Ù·é ¹× ÀÚÀÛ Kit)
The Radio Works
Baluns from ARRAY SOLUTIONS

 

¿ì¸®³ª¶ó Ç¥Áؽÿ¡ ´ëÇÑ ±ÛÀÔ´Ï´Ù.

Á¶¼± ¼¼Á¾Àº Çؽð踦 ¸¸µé¸é¼­ ¼­¿ïÀÇ Á¤³²ÇâÀ» ±âÁØÀ¸·Î Ç¥Áؽø¦ ¼³Á¤Çß´Ù. ÀÌ´Â µ¿°æ 127.5µµ(ÇÔÈï-¿ø»ê-°¡Æò-¾çÁÖ-ÀÌõ-ûÁÖ-´ëÀü-¼øõÀ¸·Î À̾îÁö´Â ÀÚ¿À¼±)Àε¥, ´ëÇÑÁ¦±¹ÀÇ °íÁ¾Àº 1908³â 4¿ù 1ÀÏ À̸¦ Ç¥Áؽ÷Π¼±Æ÷Çß´Ù.

±×·¯³ª ÀÏÁ¦´Â Á¶¼±À» ħŻÇÑ µÚ Ç¥Áؽø¦ ÀϺ»ÀεéÀÌ »ç¿ëÇÏ´Â µ¿°æ 135µµ·Î º¯°æÇß´Ù. ÀÌ ¶§¹®¿¡ Á¶¼±¿¡¼­´Â ÀÌÀüº¸´Ù 30ºÐ ÀÏÂï, ÀϺ»ÀÇ ½Ã°£¿¡ ¸ÂÃç »ýÈ°ÇØ¾ß Çß´Ù. ÀÌ Ç¥Áؽô 1945³â ±¤º¹ ÈÄ ÇÑÂü Áö³­ 1954³â 3¿ù 21ÀÏ ¿ÀÀü 9½Ã¸¦ ±âÇØ °íÁ¾ ¶§ ±âÁØÀ¸·Î µ¹¾Æ°¬´Ù.

´ç½Ã ±¹¸³Áß¾Ó°ü»ó´ëÀå ÀÌ¿øö ¹Ú»ç´Â ¡°Ç¥Áؽà º¯°æÀº ÀϺ»°úÀÇ °¨Á¤À̶ó´Â ¼Ò½ÂÀûÀÎ »óȲ¿¡¼­ ³ª¿Â °Ô ¾Æ´Ï¶ó žçÀÇ ¿îÇàÀ» ±âÁØÀ¸·Î ÇÏ´Â ÇÕ¸®ÀûÀÎ ½Ã°£ÀÏ »Ó¡±À̶ó¸ç ¡°ÇѹݵµÀÇ Á߾Ӻθ¦ Åë°úÇÏ´Â ÀÚ¿À¼±À» ±âÁØÀ¸·Î Ç¥Áؽø¦ Á¤ÇÏ´Â °Ô Ÿ´çÇÑ ÀÏ¡±À̶ó°í ¸»Çß´Ù.

À̳¯ ¼­¿ï Á¾·Î º¸½Å°¢°ú Àü±¹ÀÇ Çб³, ±³È¸, »çÂûÀº Á¾°ú »çÀÌ·»À» ÀÏÁ¦È÷ ¿ï·Á ¡®½Ã°£ÀÇ ±¤º¹¡¯À» °æÃàÇß´Ù. ±×·¯³ª 1961³â 8¿ù 10ÀÏ ¹ÚÁ¤Èñ Á¤±ÇÀº ´Ù½Ã ÀϺ»°ú °°Àº µ¿°æ 135µµ¸¦ Ç¥Áؽ÷Π»ç¿ëÇÏ´Â ¹ý¾ÈÀ» Åë°ú½ÃÄ×°í, ÀÌÈķεµ °è¼Ó »ç¿ëµÇ°í ÀÖ´Ù.

Ç¥Áؽà ³í¶õÀº ÀÌÈÄ¿¡µµ ºú¾îÁ³´Ù. 2000³â 8¿ù Á¶¼øÇü ÀÇ¿ø µî Á¤Ä¡ÀεéÀº Çѱ¹ÀÎÀÇ »ýü¸®µë¿¡ ¸Â´Â Ç¥ÁؽÃ(µ¿°æ 127.5µµ)·Î º¯°æÇØ¾ß ÇÑ´Ù´Â ¹ý¾ÈÀ» ¹ßÀÇÇß´Ù. Á¤ºÎ¿¡¼­´Â ¹Ý´ë °ËÅä ÀÇ°ßÀ» ³»³õ¾Ò´Ù. ´ëºÎºÐÀÇ ±¹°¡°¡ ±¹Á¦Ç¥ÁؽÃ(GMT)¿¡¼­ 1½Ã°£ ´ÜÀ§ÀÇ ½ÃÂ÷¸¦ µÎ´Â µ¥ ºñÇØ 30ºÐ ½ÃÂ÷´Â ±Û·Î¹ú ½Ã´ë¿¡ ¸ÂÁö ¾Ê°í, ºÏÇѵµ µ¿°æ 135µµ¸¦ ¾²°í ÀÖÀ¸¹Ç·Î ÅëÀÏ ÈÄ¿¡³ª º¯°æÀ» °í·ÁÇØ¾ß ÇÑ´Ù´Â ÁÖÀåÀ̾ú´Ù.

¾î·µç Çѱ¹ÀεéÀº º»ÀÇ ¾Æ´Ï°Ô 30ºÐ ÀÏÂï ÀϾ´Â ¡®¾ÆħÇü Àΰ£¡¯À¸·Î »ì¾Æ°¡°í ÀÖ´Ù. ÃʵîÇб³ °úÇÐ ±³°ú¼­¿¡ ÇÏ·ç Áß ÇØ°¡ °¡Àå ³ôÀÌ ¶° ÀÖ´Â ½Ã°£Àº 12½Ã·Î ³ª¿Â´Ù. ±×·¯³ª ¾ö¹ÐÈ÷ µûÁö¸é 12½Ã 30ºÐÀÌ µÇ´Â ¼ÀÀÌ´Ù.

 

 

 

 

 

http://www.samplestore.co.kr/front/php/product.php?product_no=2506&main_cate_no=206&display_group=1