• To anyone looking to acquire commercial radio programming software:

    Please do not make requests for copies of radio programming software which is sold (or was sold) by the manufacturer for any monetary value. All requests will be deleted and a forum infraction issued. Making a request such as this is attempting to engage in software piracy and this forum cannot be involved or associated with this activity. The same goes for any private transaction via Private Message. Even if you attempt to engage in this activity in PM's we will still enforce the forum rules. Your PM's are not private and the administration has the right to read them if there's a hint to criminal activity.

    If you are having trouble legally obtaining software please state so. We do not want any hurt feelings when your vague post is mistaken for a free request. It is YOUR responsibility to properly word your request.

    To obtain Motorola software see the Sticky in the Motorola forum.

    The various other vendors often permit their dealers to sell the software online (i.e., Kenwood). Please use Google or some other search engine to find a dealer that sells the software. Typically each series or individual radio requires its own software package. Often the Kenwood software is less than $100 so don't be a cheapskate; just purchase it.

    For M/A Com/Harris/GE, etc: there are two software packages that program all current and past radios. One package is for conventional programming and the other for trunked programming. The trunked package is in upwards of $2,500. The conventional package is more reasonable though is still several hundred dollars. The benefit is you do not need multiple versions for each radio (unlike Motorola).

    This is a large and very visible forum. We cannot jeopardize the ability to provide the RadioReference services by allowing this activity to occur. Please respect this.

antenna upgrade questions

lonlywolf65

Member
Joined
Feb 4, 2020
Messages
75
Hello all.. I hope all is well . I will start with the fact that I am a newbie to this, there is alot to learn..
I purchased a cobra/uniden roadking it comes with a 24 inch mag mount antenna, most likely about the worst a person could get but will work sort of for now...
I am working with a tight budget for now but still trying to do an upgrade. I have a 4 ft fiberglass antenna but no mounting hardware.. I have checked continuity and all is good there.. I am looking for advice on the best way to use this antenna for now ... My thoughts are to get a ground plane kit for it and some RG-8 coax .. and some way to ground this this...
I have been windowshopping all sorts of options, but figured I should present my situation to those with more knowledge than me. I understand this will not be a great upgrade but it should be better that a mag mount on a pizza tin sitting outside..

I went outside tonight and looked up where I will be mounting the antenna and realised that I dont have alot of room to work with. I have a aprox 200 yr old Oak tree hanging over the mounting area.. so not alot of room to work with.... Another note I'm not sure if the city owns the tree or my neighbor.. another story but I cant do much about the branches.
I figure I will leave it at this for now untill I get more info... Thank you all in advance for the help and advice I already know there is a awesome group of ppl here thank you!!
 

522

Member
Premium Subscriber
Joined
Dec 8, 2007
Messages
174
Location
Murray, Utah
If it were me... I'd make a dipole and get it on that tree.

I'll leave it at that. PLENTY of info on the webs... (try Youtube) with info on making one for the CB bands.
It's super easy and super cheap. Fun too. You'll learn something!
 

prcguy

Member
Joined
Jun 30, 2006
Messages
9,725
Location
So Cal - Richardson, TX - Tewksbury, MA
A 4ft fiberglass mobile antenna with a tiny ground plane is about the same as a Workman B100, they suck so bad I can't believe anyone could get more than a mile range. Make a dipole as mentioned or for a few $$ you can make a very nice full size 1/2 wave end fed using a little transformer you wind and about 18ft of wire hanging from a tree. Please do anything other than the mobile antenna or a B100.
 

DaveJacobsen

Member
Joined
Oct 24, 2015
Messages
25
Location
Seattle WA
You can make a cheap wire dipole to hand from a tree.
Avoid using mobile antennas as base...
I made a dipole out of two 5' firestik - simple and works great.
You can search eBay and find pre-made wire dipole for around 30. That'd be a better use of your funds than a ground plane kit.
 

lonlywolf65

Member
Joined
Feb 4, 2020
Messages
75
I have decided to go with buying a dipole.. I saw a half wave on ebay ...https://www.ebay.com/itm/Half-Wave-Base-Station-Dipole-Antenna-CB-Radio-Band-11-Meters/123724165828?epid=1031620856&hash=item1cce88f2c4:g:GoMAAOSwz55cwfuU ... Would I run this horizontally or vertically.... I also see that the cable goes into the center section.. will this also need to be supported.. Yes I have seen some you tunes on this but still not sure what is best.. Next is cable I know I should get some sort of RG-8 can anyone recommend a good source ... thanks
Dave
 
Last edited:

lonlywolf65

Member
Joined
Feb 4, 2020
Messages
75
Which would be a better choice or is there much of a difference full or half wave... am guessing a full wave will be better but how much ??
Thanks Dave
 

WB9YBM

Member
Joined
May 6, 2019
Messages
361
Location
Niles, IL
Which would be a better choice or is there much of a difference full or half wave... am guessing a full wave will be better but how much ??
Thanks Dave
The main differences are impedance & pattern. The higher the gain of an antenna, the less it "looks" upward and the more it looks "outward" (i.e. towards the horizon). Something in the middle (like a 3/8 wave) seems to be the best compromise and is used most often in the fringe areas of a city since it reached outward at such an angle that's best to reach repeaters on far away skyscrapers.
 

prcguy

Member
Joined
Jun 30, 2006
Messages
9,725
Location
So Cal - Richardson, TX - Tewksbury, MA
Do you mean 5/8? Maybe in a ground plane type but I think the question was about a dipole and you would not want to use 5/8 wave measurements for that. A simple 1/2 wave dipole is easy and forgiving to build and hang vertical.

The main differences are impedance & pattern. The higher the gain of an antenna, the less it "looks" upward and the more it looks "outward" (i.e. towards the horizon). Something in the middle (like a 3/8 wave) seems to be the best compromise and is used most often in the fringe areas of a city since it reached outward at such an angle that's best to reach repeaters on far away skyscrapers.
 

lonlywolf65

Member
Joined
Feb 4, 2020
Messages
75
I am referring to dipole antenna... I see a half and full wave for bout same price... the half will be easier to hang I guess... ? and will this dipole need to be gounded? If so what is the best way to do so..?? thank you for all the great input
 

prcguy

Member
Joined
Jun 30, 2006
Messages
9,725
Location
So Cal - Richardson, TX - Tewksbury, MA
A full wave dipole sounds like an advertising gimmick, it would not match to 50 ohm coax and would not have a usable radiation pattern when set up vertical. It would also be about 36ft tall for CB. If you set a dipole up outside you should ground it to code, which can be found here: https://www.mikeholt.com/download.php?file=PDF/Radio_and_Television_2014NEC.pdf

I am referring to dipole antenna... I see a half and full wave for bout same price... the half will be easier to hang I guess... ? and will this dipole need to be gounded? If so what is the best way to do so..?? thank you for all the great input
 

lonlywolf65

Member
Joined
Feb 4, 2020
Messages
75
I guess I'm asking where to attach the ground cable to the antenna?? I already have a grounding rod and clamp and the wire to run to the rod
 

prcguy

Member
Joined
Jun 30, 2006
Messages
9,725
Location
So Cal - Richardson, TX - Tewksbury, MA
You can ground the coax anywhere before it enters the house to meet code but read the link I sent for all the small but important details. If you installed a new ground rod there are rules about bonding that to your existing AC entry panel ground, etc.

I guess I'm asking where to attach the ground cable to the antenna?? I already have a grounding rod and clamp and the wire to run to the rod
 

lonlywolf65

Member
Joined
Feb 4, 2020
Messages
75
I haven't done a thing yet. Just reading finding the grounds, looking at trees.. my house is about 12 ft tall at peak.. my ladder is 17 ft... Am thinking horizontally... But not sure if it should be vertical.. .. either way I'm thinking it thru...
 

prcguy

Member
Joined
Jun 30, 2006
Messages
9,725
Location
So Cal - Richardson, TX - Tewksbury, MA
If you want to talk to everybody local on their base or mobiles and also long distance skip you want your antenna to be vertical. If you only want long distance skip then horizontal is ok, but that won't work very well talking to locals.

I haven't done a thing yet. Just reading finding the grounds, looking at trees.. my house is about 12 ft tall at peak.. my ladder is 17 ft... Am thinking horizontally... But not sure if it should be vertical.. .. either way I'm thinking it thru...
 

WB9YBM

Member
Joined
May 6, 2019
Messages
361
Location
Niles, IL
basically the bigger the antenna, the greater is your capture area for signals and the higher is your transmission gain (in general)...
 

lonlywolf65

Member
Joined
Feb 4, 2020
Messages
75
This is the dipole I purchased HALF-WAVE DIPOLE ANTENNA FOR THE CB BAND (11 METERS) BASE STATION | eBay

Now for the hanging details. My ladder is 17 ft which is about where I plan to put the anchor for the perpendicular coax..
so in short will this be ok.?? I saw something saying where this point should be to properly radiate a wave or the wave starts to flatten as you go lower and then at some point the wave starts spitting up... Not sure if this applies to this situation but I watched read and tried to learn.

The hardest part to figure out is what applies to what band. The theory changes as does the frequency...

Ok next does anyone have some good advice about how to hang it..lol... I can see a good upper branch however there is not a lower branch under it to keep dipole 90 degrees from all angles..... this leaves me with the though of some sort of ground anchor to hold the lower end of dipole....
OK enough typing for now..... will drag out the ladder and see more exactly a better plan and wait for advice from here
Thanks a bunch !!! I am begining to learn more as I read but still along way from real understanding...
Thanks Dave
 
Top