radiomancanada
Member
I spend a lot of time in my room at the electrical central were I work not home a lot I was wondering if I can set up a small yagi outside on the window frame to continue my hobby I cannot set up a dipole either.
-
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.
Small yagi for 11 meters
- Thread starter radiomancanada
- Start date
- Status
How small are you thinking?
A classic Yagi consists of a half wave dipole with a reflecting element and one or more directing elements. Overall, it requires more space than a simple dipole.
A 2 element 11 meter Yagi with only a reflector would be around 8 feet wide and about 6 feet long. Unless you only want to speak in one direction, you would need some means of rotating it.
A classic Yagi consists of a half wave dipole with a reflecting element and one or more directing elements. Overall, it requires more space than a simple dipole.
A 2 element 11 meter Yagi with only a reflector would be around 8 feet wide and about 6 feet long. Unless you only want to speak in one direction, you would need some means of rotating it.
The typical classic 2 element, (27MHz) 11 meter yagi-uda would be at minimum 18 feet wide with a 5 to 8 foot boom length depending on optimiztion for either forward gain, F/R, F/B or input Z.
If you went to a design such as a Moxon then it would have 13.25 feet wide elements with a 4.84 foot long boom.
This is the shortest design 2 element that you could come up with before gain drops off rapidly along with matching issues.
The moxon is an approximate 6 dbi gain design with a close 50 ohm feed point Z.
If you went to a design such as a Moxon then it would have 13.25 feet wide elements with a 4.84 foot long boom.
This is the shortest design 2 element that you could come up with before gain drops off rapidly along with matching issues.
The moxon is an approximate 6 dbi gain design with a close 50 ohm feed point Z.
KC4RAF
Member
You just ain't gonna have a "small" yagi for 11 meters. And as already posted, it's going to be mainly in one direction of transmission and receive.
Your next best choice if you are only running low power, and by this I mean not running hundreds of watts but 10 to 20 watts, is to go to a Mag loop antenna.
Unless the mag loop is home built they are expensive and either design, a store purchased mag loop or a home built Mag loop will be very critical to tuning to resonance and both, store bought and home built mag loops, will have narrow bandwidth which may not be an issue for your situation since 27 MHz is very narrow to begin with.
Something like a W4OP mag loop would fit your small space requirement and would be useable over the 27 MHz band but they aren't low cost.
Unless the mag loop is home built they are expensive and either design, a store purchased mag loop or a home built Mag loop will be very critical to tuning to resonance and both, store bought and home built mag loops, will have narrow bandwidth which may not be an issue for your situation since 27 MHz is very narrow to begin with.
Something like a W4OP mag loop would fit your small space requirement and would be useable over the 27 MHz band but they aren't low cost.
- Status
