Kitn1mcc
Member
This is for the old timers. I remember seeing a setup with the Ball and spring then it was connected to a elevated VHF/UHF antenna. They used to use it on open cab fire truck. Anyone remember
-
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.
Low band Ball Whip elevated feed to VHF antenna
- Thread starter Kitn1mcc
- Start date
I'm familiar with this kind of antenna with spring that would be used for VHF High band: Antenna Specialists Aspg730 39-42Mhz 3/4" Roof Mt W/Spring & Cable | eBay
The one shown is for VHF Low band. They would use a different base to match up for VHF high.
The ball and spring type you are describing, to me would be VHF Low band (30-50 MHZ) and not UHF.
Antenna length depends on the frequency used. Lower frequencies had longer antennas, higher was shorter.
The one shown is for VHF Low band. They would use a different base to match up for VHF high.
The ball and spring type you are describing, to me would be VHF Low band (30-50 MHZ) and not UHF.
Antenna length depends on the frequency used. Lower frequencies had longer antennas, higher was shorter.
nd5y
Member
Dou mean a big CB/low band type ball and spring mount with another VHF/UHF antenna mounted to it?
I have never seen or heard of anything like that. How would the coax connect to the elevated antenna?
nd5y
Member
It's a sleeve dipole. Sometimes called a coaxial dipole or coaxial sleeve dipole.
There are several variations mostly used as base station antennas. Sometimes they are made of copper or brass tubing inside a fiberglass tube.
Kitn1mcc
Member
thats what i keep seeing. also asked in an older motorola group think i found what i am looking for
Never saw a whip ball & spring used with a VHF antenna. All of the open cab apparatus in Lowell, MA had coaxial dipoles mounted on the officers side by the windshield. They were phased out as we got closed cab "B" model Macks with 3/4"nmo roof mounts,
I've climbed through a few Lowell fire trucks, my son in law is with Lowell FD.
K6GBW
Member
Prcguy, remember those elevated feed point antennas LAPD used when they first deployed the T-Band system? Those looked ridiculous! Wasn’t long before they got replaced with quarter waves.
I kind of remember something big and goofy way back but I think they settled on an Antenna Specialists 5dB colinear for awhile on UHF with a 1/4 wave VHF whip for the old 150MHz channels. I had a 1987 Chevy Caprice PPV set up by the previous owner to mimic an LAPD NARC car of that era and it had a 1/4 wave VHF and UHF whip on the trunk, but those were different than the B&W patrol cars of that time.
K6GBW
Member
Man, that looks like one of the LoPro cars we had. I started with those cars. Yeah, LAPD went through a few different antennas, but eventually just settled on quarter waves. With their system that all they needed.
Similar threads
