E-mail
Suggest a topic
  • PhilK

    by Published on 06-20-2017 09:01 AM
    1. Categories:
    2. TV Antennas
    Article Preview



    This is the last article in the series of bow tie (BT) antenna tests. In this test, the angle used, or put another way, the separation distance between the two ends of the BT "V," was changed to see what effect this had on the signal levels of the various TV channels.

    The approximate separation distances and approximate angles used were:





    Each pair of elements was attached to the BT antenna mount and all tests were run for that antenna. First, a set of readings for the standard angle of approximately 22 degrees, then the angle was change to approximately ...
    by Published on 06-08-2017 10:24 AM
    1. Categories:
    2. TV Antennas
    Article Preview



    The Stealth Hawk Antenna Gedanken (Thought) Evaluation

    The Stealth Hawk Antenna is made from a single 60” (5’) long piece of wire. The design I used as my template was:


    [VHF-UHF07-51]

    The top section was 30" long. Essentially, this is simply a 30" full-wave loop, so the full wavelength is 30", which is for about 394 MHz.

    This is between channels 13 & 14, which are frequencies of 210 - 216 MHz and 14, 470 - 476 MHz respectively. This is a bit longer than that needed for the UHF frequencies starting at those of Ch 14. Also, 394 MHz is ...
    by Published on 05-09-2017 01:10 PM
    1. Categories:
    2. Misc. Gadgets
    Article Preview



    Recently I learned that the FCC is proposing to change a few things in the personal radio service.

    Some History:
    At one time, the only free personal radio service was the CB (Citizen Band) radio service. It is located in the 27 MHz (11 m) area and is limited to 4-Watts of AM (amplitude modulation) or 12-Watts (PEP) for Single Side Band (SSB) output, The basic 27 MHz CB we know today was created in 1958, though it only had 23 channels back then, not ...
    by Published on 03-01-2017 02:55 PM
    1. Categories:
    2. TV Antennas
    Article Preview



    With the change to DTV
    we ended up with "Virtual" Channels what are these?

    The "real" channels are the channels the TV stations are using to transmit on. Back before HDTV, the channel number told us what frequencies the TV station was using. We became so used to the channel number being the be-all and end-all for a TV station that the FCC or the broadcasters (TV stations) thought we'd get really confused if all of a sudden ABC Ch. 7 changed to ABC Ch. 32. ...
    by Published on 02-28-2017 09:51 AM
    1. Categories:
    2. TV Antennas
    Article Preview



    Let’s go over a few things about dipole antennas that I have picked up while being an amateur radio operator. I will start with what is known and go from there. I will then apply this to over-the-air TV and simple Bow Tie TV antennas.

    A word of warning: One of the things I learned when I was a boy was that if you have an idea, give it a try, and see what happens. In school, I learned that sometimes what you don't know can kill you (think about Madam Curie and radiation). So, please think about what you're going to try and see if you can find any danger in it. Safety is ...
    by Published on 02-21-2017 07:05 PM
    1. Categories:
    2. TV Antennas
    Article Preview



    This antenna was an extension of an idea I had back in 2002, and had an article published about the precursor antenna in Popular Communications, in January 2003: "Phil's Easy Way To Improve Your UHF TV Reception."

    The next article published shows this antenna completely as I still use it today. This article was published in Popular Communications, February 2013, pp 10-16 ...
    by Published on 02-15-2017 01:39 PM
    1. Categories:
    2. TV Antennas
    Article Preview



    I was given an antenna by a family member who didn't want it any longer: It is the RCA, ANT 140. The label said: Thomson Consumer Electronics, Deptford NJ 08096-2088. I don't know who the real manufacturer was, but it was made in China.

    Looking on the Internet I found:
    THOMSON Consumer Electronics Inc./RCA
    10330 N Meridian St.
    Indianapolis, IN 46290-1024
    P: 317-587-3000
    F: 317-587-6765

    I don't know if they are one and the same company who designed this small amplified indoor TV-FM antenna. My guess is that it was Thomson that designed and had it manufactured. ...
    by Published on 01-27-2017 11:47 AM
    Article Preview



    The location of the antenna is one of the most important elements of signal reception for radio waves. DTV is using the same frequencies for the stations as before except that channels below 7 are no longer in use. Those stations had to move to higher frequencies. An example of this is Washington’s WRC, Channel 4, which is now using the frequencies that had been for channel ...
    by Published on 11-16-2016 10:58 AM
    1. Categories:
    2. TV Antennas
    Article Preview



    Description:
    The device is sold for ~ $32 at Solid Signal without any coax.
    King Controls SureLock SL1000 Digital TV Signal Finder (SL-1000) from Solid Signal

    The claims are:
    LED lights indicate where DTV signal is strongest
    Variable sensitivity adjustment
    Foolproof antenna pointing in both strong and weak signal areas
    Also compatible with HD for DTV
    Pinpoint the location of local DTV towers
    Point the antenna before scanning for channels
    Saves time and frustration
    Eliminate the need for multiple channel scan
    Takes the guesswork out of finding the towers
    Simple to use, plug-n-play design
    Connects to the antenna TV output or in-line
    Positive signal identification

    Specifications:
    Dimensions: 3.5"L x 3.2"W x 1"D
    Weight: .25 lbs

    VHF/UHF Frequency: 40-862 MHz (Ch 2-69)
    Signal Range: 60-90 dBuV

    Power Requirement: 5V DC, 40mA

    Battery: 9V PP3 Type (included)

    Warranty: 1 year - limited

    Kit Contents:
    Signal Meter
    9V PP3 Type Battery
    Coaxial Connectors
    ...
    by Published on 05-10-2016 08:17 AM
    1. Categories:
    2. TV Antennas
    Article Preview



    This article originally appeared in 2013 but has been extensively updated.

    I will try to give some basic information about what each of these things is, when to use them, and when not to use them.

    Balun is a contraction of two words, Balanced and Unbalanced, and it refers to the type of antenna to the type of feed-line. An example of a balanced antenna is the full-wave loop, the dipole, and the bowtie antenna. An example of an unbalanced antenna is the long wire antenna, or even a non-center fed dipole ...
    by Published on 04-04-2016 02:09 PM
    1. Categories:
    2. TV Antennas
    Article Preview



    Earlier this month, March 2016, a fellow ham radio operator who is also interested in UHF TV antennas, contacted me to tell about his experiments with his Pennyloop antenna design. His site is, http://www.pennyloopdesigns.com and you can buy his plans for less than $5.

    For those of you who do not know, a pennyloop antenna is an antenna based on a full wave loop antenna. It is basically a single loop antenna that is made out of some conducting material that starts out as slightly longer in length than the longest wavelength you want to receive. It is then bent into a loop and is ...
    Page 1 of 3 1 2 3 LastLast