A former ham transmitter mfg circa 1960 converted for AM operation on 1710 kHz

I used to live in an apartment complex with 980 units, all of which were outputting some electrical noise

A software receiver that uses a simple, low cost hardware downconverter in conjunction with sound-card software such as dl4yhf's spectrum lab

A simple portable antenna is described that gives good radio reception on the main shortwave bands

The loop frame is made from 1/2 square hardwood strips that are 24 long

Home-made antennas can greatly improve the performance of AM and FM radios, short-wave receivers, and scanners

Is a small antenna going through an RF preamplifier to a receiver

Shortwave portable radio, portable shortwave receiver, world band radio, worldband

The loop antenna is easy to build but the preamplifier has a lot of active components many gain stages, much noise

The antenna works very well particularly on 40m zl, vk, 3b9 and antarctica worked, on 20m you will need atu as like the w3dzz the impedance is high on this band

I am also an avid listener of other things on the long, medium and shortwave bands

Transmitting antennas are much more critical than receiving antennas, although a receiving antenna can transmit if it is resonant

Guide to the different types of antennas for shortwave radio broadcasting

Vi presento l'antenna T2FD per l’ascolto della banda HF

Lacking room for a beverage receiving antenna, we constructed several loop receiving antenna to see if we could find a suitable low /lower noise receiving antenna

Two Beverages are paralleled a short distance apart, and stepped one in front of the other, can be phased to remove unwanted rearward response

These circuits perform very well. However, I'm still experimenting

This is a useful device for coupling an external antenna to a radio that has no antenna jack

These antennas work best when propagation time of signals along the horizontal wires matches propagation time of the wave in space around the antenna, and when the earth or a ground system below the antenna is good

The principle is actually very simple - inverted l resonant antenna with a predominance of vertical components, particularly advantageous for dx operation

It is not always possible or allowed to tackle the sources of local qrm. what remains is trying to reduce the noise level by means of your antenna system

The small single turn magnetic loop sstml antenna consists of a single winding inductor, about 3 feet 1 meter in diameter, and a tuning capacitor

A comparison of the real estate needed for four ewes and the k9ay loop system shows that the loops need only 1/7 the area of the ewes, yet they provide the same directional patterns

The simple remote control was originally designed to operate with a 2.5m portable mag loop for 20-15m and therefore uses batteries

Shortwave loop antenna KIT allows you to build a tuned loop antenna for indoor reception of shortwave radio broadcasts over the frequency range of 4 MHz to 15 MHz

This is probably the oldest SWL antenna design. It is often called a long wire though a true long wire is cut to a specific frequency and is at least one wave length long at that frequency

It would be best to use a 9:1 transformer to match the random wire to the 50 ohm feedline

I wanted to explore the possibility of having at least better receive

You must have a good install to eliminate the most common problems

The rhombic antenna is a diamond-shaped antenna, suspended between 4 masts

Si tratta di un ricevitore a reazione, basato su una variante del circuito Hartley

SWL or shortwave listening is the reception of public broadcast or amateur radio ham stations in the frequency range 1.8 to 30 MHz

Here are some photos of the shortwave loop antenna assembly to help you with putting it together

Below is a rough diagram and some photos of my skywire horizontal loop antenna. It is roughly 475 feet long and fed with 450-ohm ladder line

Active antennas are expensive, apt to generate as much noise as signal, and are prone to overload

This radio uses two #30 tubes and operates on batteries, it has shortwave coverage in two bands, 4.8 to 7.5 MHz and 7.3 to 12.0 MHz using plug in coils

Drake r8 communications receiver reston virginia, usa