Application Guide

Adding VHF reception to Antennas Direct UHF antennas

The C2 VHF reflector kit (C2-V-REF, $19.99 + S&H), as packaged and sold, is an easy bolt-on upgrade

intended for the ClearStream 2 UHF antenna. We’ve found that, with a bit of ingenuity and some basic

mechanical skills, the kit can be adapted for use with most of our UHF ClearStream loop and DB bowtie

antennas to offer much improved VHF reception on these otherwise UHF antenna designs. Some of the

following modifications may involve the use of power tools. Please take appropriate safety precautions

to avoid possible injury.

Generic upgrade

The kit may be made into a simple VHF antenna suitable for combining with any

UHF antenna by using

the following tips

1) Disassemble the kit so as to remove the black wire reflector, and then reassemble.

2) The kit may then be mast-mounted so the dipole element has a clear view of the VHF signals.

3) If necessary replace the attached UHF coaxial cable with a longer piece so as to be able to

combine the existing UHF antenna to the UHF/VHF combiner.

ClearStream 4

The C2v reflector panel may be installed in place of one of the two reflectors. While this mounting

location doesn’t offer an optimal location for the VHF element due to its proximity to the C4 combiner

and cross-bars, it works moderately well for less complicated reception areas. For optimal performance,

mount the VHF element to the mast above or below the C4 as described in the generic instructions

above.

ClearStream 1 and ClearStream1 Convertible

Replace the standard C1/C reflector with the replacement kit. Use the long screw originally provided

with the C1/C to make the mechanical connection. The modified antenna will work slightly better on

UHF than with the original reflector screen. The drawback is that the modified antenna must now be

attached to a mast or mount as it will no longer be able to simply stand on a horizontal surface.

DB8

Use generic instructions above or DB4/DB4e instructions below. Best results will be achieved by

situating the dipole above or below the DB8 rather than behind the reflector screens or adjacent to the

combiner bar assembly.

PAGE 1
Adding VHF reception to Antennas Direct UHF antennas The C2 VHF reflector kit (C2-V-REF, $19.99 + S&H), as packaged and sold, is an easy bolt-on upgrade intended for the ClearStream 2 UHF antenna. We’ve found that, with a bit of ingenuity and some basic mechanical skills, the kit can be adapted for use with most of our UHF ClearStream loop and DB bowtie antennas to offer much improved VHF reception on these otherwise UHF antenna designs.
PAGE 2
DB2e, DB2 Use generic guidelines above for ease of conversion. Otherwise: 1) A hole will need to be drilled through the reflector support to mount the combiner or 2) Use cable ties to secure the combiner to the reflector. DB4e, DB4 On the C2-V-REF, remove the plastic cable ties, and then remove the signal combiner and plastic dipole holder from the reflector (two screws and nuts). Save the screws and re-use them as directed below.