![cre 8900 power mods cre 8900 power mods](https://www.picclickimg.com/d/l400/pict/363512807161_/ALINCO-135-DX-10-Ham-Radio-SSB-CRE.jpg)
In my area, all of the broadcasts are clustered around 500 mhz, which has a 1/2 wavelength of 23.6".
![cre 8900 power mods cre 8900 power mods](https://simonthewizard.files.wordpress.com/2014/04/8390_3.jpg)
CRE 8900 POWER MODS TV
This is a great website that will tell you where the TV signals are coming from in your area, how strong they are, and what frequencies they are. If you havent yet, be sure to check out . And further, the antenna should be tailored to the specific broadcast frequencies in your area. Half of 14.3 is 7.125, CLOSE to 7"! So nearest I can tell, a 7" whisker length looks to be about right for a 1/4 wave dipole antenna on the VHF band. So t looks like 7" is a nice compromise for an antenna to be resonant on two different bands.Ĭonsidering that most tv broadcasts on the UHF band, it would seem to make much more sense to me to tailor the antenna for UHF. 95 to get a copper element length of 14.3". The center of the VHF band is about 195mhz, which has a 1/4 wavelength of about 15.1". So maybe this 7" number is a compromise to cover the VHF band as well? A 680mhz 1/2 wavelength is about 8.7" long in free space, and so a copper element half wave dipole should be about 8.3 inches long. The UHF frequency allocation for television is about 470 to 890 MHZ, so the center of this band is 680mhz. Most of the designs I could find for this antenna style included a 7" whisker length, with no explanation as to where this measurement came from. The antenna I describe here, made for about $20 in parts receives 5 channels in our area almost perfectly. I bought a rabbit ears antenna WITH a pre-amp at the hardware store. Why are we paying the satellite or cable people 100 bucks a month? Well if you can do without HBO, gve this a shot.
![cre 8900 power mods cre 8900 power mods](https://i.ytimg.com/vi/0L-pTuGH-hE/maxresdefault.jpg)
TV is supposed to be free, and now that the networks are broadcasting in digtal, the picture quality is perfect HDTV. This antenna is an excellent performer on the UHF frequencies. Below is a design I came up with for what is called either a "DB4" antenna or a "bowtie antenna" for TV reception.