I want to attach an external antenna to a Motorol T5622 radio

1. Remove the antenna mast from the antenna base. Grasp the antenna mast near its base and twist it counterclockwise to remove it from the base.
2. Remove the antenna base cover. You can use a flathead screwdriver or a plastic trim removal tool to gently pry the cover off.
3. Disconnect the antenna cable from the booster. There will be a connector attached to the booster. Gently unplug it to disconnect the cable.
4. Remove the old booster. It is usually held in place by a mounting screw or adhesive. If there is a screw, use a screwdriver to remove it. If there is adhesive, carefully pry the booster off with a flathead screwdriver.
5. Clean the mounting surface. If there was adhesive holding the old booster, use a cloth and some rubbing alcohol to clean the surface where the new booster will be attached.
6. Install the new booster. If it comes with a mounting screw, align the booster and screw it in place. If it comes with adhesive, remove the backing and carefully attach it to the cleaned surface.
7. Reconnect the antenna cable to the new booster.
8. Reinstall the antenna base cover.
9. Reattach the antenna mast to the antenna base by twisting it clockwise.

YES YOULL NEED TO GET A BOX FOR IT TO WORK BECAUSE IT ENHANCES THE SIGNAL RANGE AND CONECTION

what co-axial cable are you using on the antenna. Is it a video co-axial cable or is it a RF 50 ohm antenna cable ? They look similar but electrically they are different.

Have you hot a digital receiver connected to the TV.....Sky or Cable?

If you are using an indoor Antenna:
1- the most probable reason would be the location of the antenna and TV in an area where the reception is very low. Indoors all houses are affected by the running electrical circuits which in turn generate magnetic field that together with the structure of the house obstruct or weaken the wave signals of wireless and TV reception. Also this issue may be aggravated by the vicinity you are live in. Where you are living may not have the optimum reception from some services including TV signals. Your best bet is to try moving the (Indoor) antenna closer to the outside (such as windows, or better to a balcony) and try all four directions of the house.
2- One other possibility, is the antenna jack being disconnected from one of its wires (or a de-solder) at an internal part of its circuit). This problem can be detected by trying another antenna that is working good when used with another TV (and preferably at a different location) thus testing for the possible weak signal at the same time.
3- The last possible issue is the antenna receptacle built onto the Tv set. This may have a problem of some element of it disconnected internally on the board or de-soldered..
If the Antenna is external, all the above points are still valid, but the probability is higher, for some hidden disconnection on the receptacle, the antenna plug or at the connection of the co-axial cable with the external antenna. (Once I found a co-axial cable with disconnections of its central copper wire within the protective insulating coat- probably due to defects in the plastic coat that had microscopic holes that allowed air and humidity into the central wire and caused it to corrode and have those discontinuities)..

If you don't see one, there is a mount on the passenger side front fender for an external antenna. These can be replaced or repaired by unscrewing the old/broken antenna at the base and attaching a new one. If the antenna is still in the mount and you are not receiving any stations the wire connecting the antenna to your radio could be broken or disconnected. GM uses what is commonly known as a "Motorola" plug for the antenna so if you need to replace the cable be sure to specify that type of plug/wire design.

Hello
There is no provision to input DC to this device. It is only designed to work on AC only. There are only AUX in and out sockets and a co-axial cable antenna input at its back connections. If you haven't AC mains connection, you have to contact any experienced service techinican to take a wire connection out of it. to that connection you can connect the battery. Ask the technican to make a diode protection to the connections he set up for reverse voltage protection. OK.

Important! Please give copies to all your VW Technicians C 91--99--07 E 1999 Volkswagen of America, Inc. 1 Subject: Model(s): Group: Number: Date: AM Radio, Poor Reception 1999, 2000 91 99--07 New Golf, New Jetta, Aug. 2, 1999 New Beetle, Passat Condition AM reception is poor. May be caused by: ? An incorrect antenna mast installed for the antenna base equipped with the vehicle ? Poor ground at the antenna base or radio ? Poor battery ground to chassis or engine ? Poor antenna cable connection at Radio ? Corrosion at the antenna coaxial connectors at radio or antenna Service Vehicles are equipped with either a Bosch or a Clarion antenna base mounted on the roof and (for shipping purposes) the appropriate matching mast is located in the luggage compartment. If radio antenna masts are removed from vehicles and stored until vehicles are sold, there is a chance that an incorrect mast can be installed at the time of delivery. Note: Mismatched antenna mast and base will cause poor AM radio reception. The antenna base and mast can be identified visually as follows: (Cont. on Page 2)91-A260 requires gloss finish antenna mast 57mm 49mm Bosch 91-A261 requires matte finish antenna mast 61mm 41mm Clarion 91-A262 Technical Bulletin Important! Please give copies to all your VW Technicians C 91--99--07 E 1999 Volkswagen of America, Inc. 2 Bosch antenna ? Base (although oval) is more circular in shape (approx. 57mm x 49mm). ? Made in Germany stamped on underside of base. ? Two screws on underside of base are unpainted. ? Requires gloss finish antenna mast. Clarion antenna ? Base is more oval in shape than Bosch (approx. 61mm x 41mm). ? Two screws on underside of base are painted. ? Requires matte finish antenna mast. If antenna mast matches the antenna base correctly: -- Check antenna coaxial cable connections --arrows-- for corrosion and clean if necessary (DO NOT apply stabilant). Passat coaxial cable connection for radio is under the carpet on right side of tunnel near shifter. -- Ensure that coaxial cable is firmly seated in radio (Passat cable connection, see previous step). -- Check ground at the antenna below roof Nut --4-- (torque = 7+1 Nm) must firmly secure antenna to roof). (Cont. on Page 3)Technical Bulletin Important! Please give copies to all your VW Technicians C 91--99--07 E 1999 Volkswagen of America, Inc. 3 -- Check ground for radio behind radio on cross member (On Passat models as of Nov. 1998 beginning VIN: XE285000 ground for radio is on right side of center tunnel). -- Check engine compartment ground, left side, below battery tray; frombattery GND to body. -- Check engine/transmission ground on transmission, near engine block. -- If all grounds and antenna mast are OK. -- Replace antenna and coaxial cable assembly

This will require dash removal, the factory routing for the cable is behind and above the airbox. The easiest way to do it if you have not already pulled the old one out is to attach a piece of 16 guage wire to one end of the factory cable before you pull it out, and then when you pull out the old cable it will in turn pull the 16 guage wire through in its place. At this point attach the new cable to the 16 guage wire and pull the 16 guage wire through which will in turn pull your new cable through. If you have already pulled the old cable out and want to install the new through the same route then you will have to remove the airbox, or you can just reroute the new cable.

You could use 75ohm satalite cable for the RF cables it will give you better signal than the old style co-axial cables most people use. Simply put new co-axial plugs on the new cable and connect that. It will also cut down on electrical intereferance and noise if you use it right up to the antenna. Makes a hell of a difference if you are watching digital TV!