6 meter mobile antenna.

Status
Not open for further replies.

62Truck

Ordinary Subscriber
Joined
Aug 13, 2005
Messages
2,013
Location
Uranus
I'm getting a Alinco DR-06T for Christmas I'm going to be using in the house and eventually I will probably end up installing it in my car. What are some decent NMO 6 meter antennas?


Sent from my iPhone using Tapatalk
 

kayn1n32008

ØÆSØ Say it, say 'ENCRYPTION'
Joined
Sep 20, 2008
Messages
7,160
Location
Sector 001
Wirelessly posted (Mozilla/5.0 (BlackBerry; U; BlackBerry 9780; en-US) AppleWebKit/534.8+ (KHTML, like Gecko) Version/6.0.0.600 Mobile Safari/534.8+)

Larsen makes a base loaded 1/4wave, as well I believe a Larsen 144MHz 5/8wave will also load on 6metres
 

W2NJS

Member
Joined
Mar 27, 2006
Messages
1,938
Location
Washington DC
Firestik, if they're still around, once made a 6M loaded whip that was about four feet tall and came with the standard 3/8-24 screw-in connector.
 

62Truck

Ordinary Subscriber
Joined
Aug 13, 2005
Messages
2,013
Location
Uranus
Wirelessly posted (Mozilla/5.0 (BlackBerry; U; BlackBerry 9780; en-US) AppleWebKit/534.8+ (KHTML, like Gecko) Version/6.0.0.600 Mobile Safari/534.8+)

Larsen makes a base loaded 1/4wave, as well I believe a Larsen 144MHz 5/8wave will also load on 6metres

You're right about the 2 meter model. A 5/8 2 meter antenna would work as a quarter wave on 6.


Sent from my iPhone using Tapatalk
 

kb2vxa

Completely Banned for the Greater Good
Banned
Joined
Mar 22, 2005
Messages
6,100
Location
Point Pleasant Beach, N.J.
May I be the first to mention if you use only a vertical antenna you're limiting yourself to FM and the small, uppermost segment of the band? The bottom end and other modes are where the action is so you may also consider a horizontal loop and a different kind of mount.
 

W2NJS

Member
Joined
Mar 27, 2006
Messages
1,938
Location
Washington DC
6M radio capabilities...

May I be the first to mention if you use only a vertical antenna you're limiting yourself to FM and the small, uppermost segment of the band? The bottom end and other modes are where the action is so you may also consider a horizontal loop and a different kind of mount.

Except for the fact that the OP's inquiry indicated that his radio will be an Alinco unit that is FM only.
 

k3td

Member
Joined
May 18, 2003
Messages
199
Location
Wake Forest, NC
I'm getting a Alinco DR-06T for Christmas I'm going to be using in the house and eventually I will probably end up installing it in my car. What are some decent NMO 6 meter antennas?

Larsen's 5/8 wave 2m antenna works quite well in the FM portion of the band. Should be fun if there are 6m repeaters in your area. I even hear an occassional signal on 52.525 MHz during E-skip openings.

Have fun and 73!
 

mrweather

Member
Joined
Dec 19, 2002
Messages
1,322
If you want just a 6M mobile antenna, Larsen makes the NMO50. I have one and it works well for FM use.

Alternatively, you could take a 102" whip and chop about 40" off of it.
 

62Truck

Ordinary Subscriber
Joined
Aug 13, 2005
Messages
2,013
Location
Uranus
Thanks for the input guys. I know the rig is FM only that's what I wanted(so no poor choice in rig here), we have a triband all mode for the shack and will be moving shortly and everything else is pretty much packed up. My club does have a 6 meter machine on the air. The group of guys I normally talk to on 2 meter simplex have moved to 6 meter simplex since we started messing around with APRS. Talking on 2 meters has been taking out the digi's we had set up at our QTH's (well two of the other guys) and talking on 6 hasn't been interfering been interfering with digi's or mobile aprs units.


Sent from my iPhone using Tapatalk
 

k3cfc

Silent Key
Joined
Feb 27, 2011
Messages
715
Location
Beavertown Pa.
Thanks for the input guys. I know the rig is FM only that's what I wanted(so no poor choice in rig here), we have a triband all mode for the shack and will be moving shortly and everything else is pretty much packed up. My club does have a 6 meter machine on the air. The group of guys I normally talk to on 2 meter simplex have moved to 6 meter simplex since we started messing around with APRS. Talking on 2 meters has been taking out the digi's we had set up at our QTH's (well two of the other guys) and talking on 6 hasn't been interfering been interfering with digi's or mobile aprs units.


Sent from my iPhone using Tapatalk

It doesn't matter what you buy radio antenna house there will be something wrong with it according to certain people. i think you are doing a bang up job so keep up the good work.

K3CFC
 

k9rzz

Member
Joined
Dec 12, 2005
Messages
3,162
Location
Milwaukee, WI
May I be the first to mention if you use only a vertical antenna you're limiting yourself to FM and the small, uppermost segment of the band? The bottom end and other modes are where the action is so you may also consider a horizontal loop and a different kind of mount.

True, but E skip couldn't care less what polarization your antenna is. If you want to work the locals on SSB/CW, then definitely a Squalo or other horizontal antenna is best. I've worked tons of cool stuff on 6m SSB using a 2m 5/8 whip on the car roof. You've just gotta work out the SWR for that part of the band. FWIW
 

Token

Member
Joined
Jun 18, 2010
Messages
2,452
Location
Mojave Desert, California, USA
May I be the first to mention if you use only a vertical antenna you're limiting yourself to FM and the small, uppermost segment of the band? The bottom end and other modes are where the action is so you may also consider a horizontal loop and a different kind of mount.

While I agree whole heartedly that a person should use the entire band, and weak signal modes at the bottom of the band, I am not quite sure why you say “vertical antenna you're limiting yourself to FM and the small, uppermost segment of the band”? It is the weak signal portions of the band that are small, the “FM” segment is the majority of the band.

FM (in the form of repeater pairs) start at 51.12 MHz. From there up the band is pretty much exclusively FM in actual application. So, 50.0 to 51.1 (1.1 MHz) is mixed modes, SSB, CW, Digital, AM, etc, while 51.12 to 54.0 MHz (2.88 MHz) is FM except for a few designated RC channels. Sure, you can legally use any mode above 51.12, but it is essentially FM only up there.

With regards to the OPs original question, a 6M antenna that is NMO. The Diamond M685SNMO is a decent single band NMO 6M antenna. I do not use it in NMO myself, I have it in UHF mount (for a specific application) and I have had very good performance from the antenna. Of course, it is a simple 1/4 wave, but it is built well and has held up well for me, even in off-road applications.

T!
 

62Truck

Ordinary Subscriber
Joined
Aug 13, 2005
Messages
2,013
Location
Uranus
While I agree whole heartedly that a person should use the entire band, and weak signal modes at the bottom of the band, I am not quite sure why you say “vertical antenna you're limiting yourself to FM and the small, uppermost segment of the band”? It is the weak signal portions of the band that are small, the “FM” segment is the majority of the band.

FM (in the form of repeater pairs) start at 51.12 MHz. From there up the band is pretty much exclusively FM in actual application. So, 50.0 to 51.1 (1.1 MHz) is mixed modes, SSB, CW, Digital, AM, etc, while 51.12 to 54.0 MHz (2.88 MHz) is FM except for a few designated RC channels. Sure, you can legally use any mode above 51.12, but it is essentially FM only up there.

With regards to the OPs original question, a 6M antenna that is NMO. The Diamond M685SNMO is a decent single band NMO 6M antenna. I do not use it in NMO myself, I have it in UHF mount (for a specific application) and I have had very good performance from the antenna. Of course, it is a simple 1/4 wave, but it is built well and has held up well for me, even in off-road applications.

T!

Thank you for your input. I will look into that antenna. I have a habit of changing my set up (usually just changing radios) and I'd like to keep all the antenna mounts the same.


Sent from my iPhone using Tapatalk
 

kb2vxa

Completely Banned for the Greater Good
Banned
Joined
Mar 22, 2005
Messages
6,100
Location
Point Pleasant Beach, N.J.
To answer Token and not to argue but clarify, while the FM portion is larger bandwidth wise it's channelized so the number of available channels and bandwidth of each one makes it smaller from an operating point of view. Weak signal as it's called uses far less bandwidth and is not channelized so you can fit a lot more stations in there.
 

popnokick

Member
Premium Subscriber
Joined
Mar 21, 2004
Messages
2,902
Location
Northeast PA
Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 6_0_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A523 Safari/8536.25)

Is 6M so overcrowded that the available allocations (FM and weak signal) are regularly all jammed up? Maybe during band openings? Didn't know all that space was so busy.
 

k3td

Member
Joined
May 18, 2003
Messages
199
Location
Wake Forest, NC
Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 6_0_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A523 Safari/8536.25)

Is 6M so overcrowded that the available allocations (FM and weak signal) are regularly all jammed up? Maybe during band openings? Didn't know all that space was so busy.

No. Current band plans were set up a few decades ago when it looked like the growth in FM and repeaters would continue until it consumed the band, so they were meant to protect the weak signal modes of CW and SSB and EME activity in the lower end of the band, provide for plenty of FM simplex and repeater use higher up in the band and allow for other modes too.

Depending on where you are located you are likely to find very little or a lot of regular local activity which could be on any combination of CW, SSB, FM or the WSJT digital modes. Activity increases substantially during the summer and winter E-skip seasons (May - July and December/January), during peak sunspot activity with F2 skip, and during major contests in January, June, July and September.
 
Status
Not open for further replies.
Top