rf problems
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Antennas : Coils- Antenna Matching Coil Adjustment Procedure
- Without this basic knowledge, addressing antenna problems, RFI problems, and matching problems, results in a frustrating situation. Procedure which must be followed to properly adjust a shunt matching coil.
[ Hits: 2676 | Votes: 4 | Rating: 4 ]
- DCI Digital Communications
- Band pass filters, for radio frequency interference problems.
[ Hits: 630 | Votes: 0 | Rating: 0 ]
- About AMTOR
- AmTOR may be considered as the next development from RTTY. AmTOR was introduced to overcome the problems with RTTY. As a result of its performance, it has become popular on the HF bands because it gives more reliable communication, especially when interference is present. It achieves this by using a coding system that allows errors to be detected and corrected.
[ Hits: 363 | Votes: 0 | Rating: 0 ]
- VLF-LF And the Loop Aerial
- The article discusses the theory of loop aerials for receiving and how they reduce the level of local noise. A Loop Aerial is described suitable for use on the LF and VLF bands together with a circuit of an interface loop tuner and preamplifier. The discussion extends to the problems of amplifier noise and the advantages of tuning the loop.
[ Hits: 3422 | Votes: 5 | Rating: 5.4 ]
- Choking on RF
- The intrepid newcomer encounters common mode problems in a mobile environment. Implementing some common mode chokes will be possible to reduce interferences
[ Hits: 1128 | Votes: 1 | Rating: 1 ]
- Hidden and stealth antennas
pop
- Antenna Restrictions, Power Restrictions, RFI Problems, or Limited Space keeping you off the air?
[ Hits: 37579 | Votes: 13 | Rating: 4.92 ]
- Icom IC7000 Tuner Connector Warning!
- Problems using the tuner interface in the ICOM IC7000
[ Hits: 1579 | Votes: 3 | Rating: 6.33 ]
- IC-746PRO TX Problem
- The IC-746PRO is a great rig. But it has a few reliability issues, especially with the earlier-production units. This article addresses four problem areas:. IC151 on the RF Unit.
Driver circuit on the PA Unit. HRX-muting circuit on the CTRL Unit. Predriver on the PA Unit.
[ Hits: 2013 | Votes: 3 | Rating: 9.67 ]
- ARIDX by UA1AAF
- At the moment the most used program is UA1AAF. It is an excellent program written by Boris, UA1AAF, to handle ARI International DX Contest. It can simulate K1EA or N6TR workings; it will be possible to connect the RTX to the computer using a standard interface in such a way as to transmit directly in CW from the keyboard; most of the controls are like K1EA's CT and N6TR's TR ; on line help provides almost all the information necessary for using the program. Is possible to insert QSO after the contest. An appropriate utility in included for conversion in ADIF format. The program is very small and therefore works without any problems on any IBM compatible computer with DOS 3.3 and over or Windows 95/98.
[ Hits: 1468 | Votes: 4 | Rating: 5.5 ]
- Gpredict
- Gpredict is a satellite tracking program for Unix-like operating systems. In the begining (v. 0.1.x) Gpredict was just a GUI client to John Magliacane's excellent satellite tracking program, Predict, but due to performance problems it has been decided to include the tracking code directly into Gnome Predict (v. 0.2.0 and later).
[ Hits: 3562 | Votes: 8 | Rating: 9.25 ]
- Using ferrite for interference suppression
- Excellent guide to using ferrite cores for interference suppression.
Understanding and Solving RF Interference and Noise Problems by Jim Brown K9YC Audio Systems Group, Inc. PDF File
[ Hits: 6152 | Votes: 6 | Rating: 9.5 ]
- Interferences and filtering
- General information on Filter passbands, interferences, TVI and RFI problems
[ Hits: 1169 | Votes: 1 | Rating: 10 ]
- 5th order High Pass VHF Filter
- Sometimes many VHF-UHF modern transceivers have problems with BROADCAST Interference and CROSS-modulation from FM commercial broadcast stations this article shows a simple Batteworth HI-Pass VHF Filter to reduce this problem
[ Hits: 1209 | Votes: 8 | Rating: 6.12 ]
- Ground Problems
- RF ground systems
[ Hits: 3110 | Votes: 2 | Rating: 7 ]
- Telephone Interference
- Telephone EMI, questions and answers on how to solve interference problems to phone lines
[ Hits: 1023 | Votes: 0 | Rating: 0 ]
- How eliminate RFI Interference in Off Grid Solar PV Systems
- How to solve RFI problems caused by the charge controller, which is a PWM type charge controller, that generates a lot of EMI interference
[ Hits: 226 | Votes: 1 | Rating: 5 ]
- Automotive Interference Problems
- Installing mobile radios in your new megabucks car can be a frightening proposition - especially if RF from your rig could damage your shiny new roadster
[ Hits: 762 | Votes: 1 | Rating: 1 ]
- Track down television interference
- Nearly half of all reception problems are due to deficiencies or faults in the television receiver, the aerial lead or the aerial. This article will help you to check whether the problem you are having is due to one of these causes.
[ Hits: 402 | Votes: 0 | Rating: 0 ]
- A Ham's Guide to RFI, Ferrites, Baluns, and Audio Interfacing
- Understanding and solving RF interference problems using ferrite
[ Hits: 1366 | Votes: 5 | Rating: 9.4 ]
- Resolving 6 Meter Amateur Interference
- Transmitting operations in the 50-54 MHz range offer some unique problems that over the past 50 years have stymied station owners, forcing them to tolerate quiet hours and hostility from family and neighbors attempting to enjoy other electronic services.
[ Hits: 319 | Votes: 0 | Rating: 0 ]
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