| Author |
Message |
    
Crackshot
Intermediate Member
Username: Crackshot
Post Number: 209
Registered: 10-2005
| | Posted on Friday, October 20, 2006 - 6:05 pm: | 
|
Ok. I am getting highly upset, frustrated and angry!!
I installed MFJ 1750 2 meter 5/8 wave antenna, new mini 8 coax, amphenol silver plated teflon connectors and still getting a 3 or higher SWR on the whole band! I tested my connectors and are good. I adjusted antenna up and down and nothing changes! Do I need to cut antenna down? Can anyone help me because I am ready to trash this whole project, sell all my 2 meter stuff and stick to 11 meter that is at least tuneable. |
Crackshot
Intermediate Member
Username: Crackshot
Post Number: 210
Registered: 10-2005
| | Posted on Friday, October 20, 2006 - 9:13 pm: |
|
Well after calming down and evaluating the situation, The radial was 4 feet long. I chopped 3 inches off it and getting 1.5:1 on 148.00 and 1.8:1 on 146.00. I am going to nip another 1/8 and see what that gets me tomorrow. |
Tech291
Moderator
Username: Tech291
Post Number: 446
Registered: 11-2004
| | Posted on Friday, October 20, 2006 - 9:13 pm: |
|
Crackshot,
1'st are you using a swr bridge designed for 2 meter and next put a "dummy" load on the antenna end of your transmission line to be sure it is ok.Dont cut the antenna until you have eliminated all other possibles.
TECH291
\blue{CEF291/CVC6}
kc8zpj |
Captian_radio
Member
Username: Captian_radio
Post Number: 62
Registered: 9-2004
| | Posted on Friday, October 20, 2006 - 10:04 pm: |
|
Crackshot Tech 291 is correct about the use of an swr meter designed for 2 meter use.One used for hf wont give you an accurate reading of swr on your antenna.Its best to listen to the voice of experience.
Bob CEF451 |
Slugo4449
Intermediate Member
Username: Slugo4449
Post Number: 123
Registered: 7-2004
| | Posted on Saturday, October 21, 2006 - 1:26 am: |
|
Crackshot, you are not doing the cutting right.
the higher in frequency you go the shorter the antenna.
if you are at 1.5:1 on 148mhz and 1.8:1 on 146mhz, and you don't have a dip in between, you should be adding to the length.
73,
Slugo4449 |
Crackshot
Intermediate Member
Username: Crackshot
Post Number: 212
Registered: 10-2005
| | Posted on Saturday, October 21, 2006 - 10:16 am: |
|
Where can I get an SWR meter for 2 meter use? |
Crackshot
Intermediate Member
Username: Crackshot
Post Number: 213
Registered: 10-2005
| | Posted on Saturday, October 21, 2006 - 10:58 am: |
|
Nevermind. I found one and will order.
I will make another 4 foot vertical radiator today and start over. |
