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Antennas : 160M
- Receiving antenna for low bands
- K9AY loop antenna installed at PA6Z Contest group. This is a receiving antennas for the low bands (160m, 80m and 40m). Include schematics and info on a building the control box, preamplifier and low-pass filter
[Hits: 7427 | Votes: 4 | Rating: 8.50] Antennas : Feed Lines
- Band Filters
- Experience of band filters, for a contest multi operator enviroenment
[Hits: 1708 | Votes: 3 | Rating: 7.67] Antennas : Feed Lines : Choke
- Chokes Explained
- A "choke" is the common name given to an inductor that is used as a power supply filter element. They are typically gapped iron core units, similar in appearance to a small transformer, but with only two leads exiting the housing
[Hits: 380 | Votes: 1 | Rating: 1.00] DX Resources : Clusters
- DXFun Web Cluster
- DX Cluster mainly in spanish, with chat, filtering available upon user registration, propagation reports and solar status, includes also latest dx news.
[Hits: 1123 | Votes: 23 | Rating: 5.18] Manufacturers : Antennas : VHF UHF Microwave Manufacturers : QRP Kits
- Micro908 Kit
- A re-usable control & computing platform for
antenna measurement, PSK31 digital modems, audio filtering, signal source & VFO, memory keyer by AMQRP
[Hits: 393 | Votes: 0 | Rating: 0.00] Manufacturers : Test Equipment : Spectrum Analyzers
- Trilithic
- Broadband instruments, R and microwave components and filters, field analyzers, spectrum analyzers
[Hits: 161 | Votes: 0 | Rating: 0.00] Operating Modes : PSK31
- Adjusting Filters for PSK31
- Screen shots of what happens when you do and don't get it right. By Dick Stevens, N1RCT, a very clear, helpfull and comprehensive document.
[Hits: 1157 | Votes: 2 | Rating: 5.50] Operating Modes : RTTY
- Getting started on RTTY
- A complete guide from the station setup, rtty software customization, tips on tuning rtty signals and setting the proper audio level and filters by Andrew G8GNI M5AEX
[Hits: 465 | Votes: 1 | Rating: 6.00] Radio Equipment : HF Transceivers : Icom IC-7000
- IC7000BKT Icom IC-7000 CAT Control
- CAT Control for Icom IC-7000 for windows. Management and synchronization of all memory bank, Management filters, volume, tones, DUP, DTCS, import export, audio recording and log frequency and signal,Auto CQ audio for repetitive calls
[Hits: 1836 | Votes: 5 | Rating: 3.60] Shopping and Services : Regional : Europe : Italy
- Mr Seven Telecomunicazioni
- Italian dealer for steppir, buddipole, force12, mosley diamond yaesu antennas, mfj ldg products, rotors filters microphones keyers and more accessories
[Hits: 239 | Votes: 0 | Rating: 0.00] Software : Circuit Design
- RF Filters
- MS DOS Program for calculations of HP, LP and BP filters at VHF and UHF frequencies up to about 800 MHz by YU1AW
[Hits: 584 | Votes: 5 | Rating: 3.40] Technical Reference : Audio Technical Reference : Duplexers
- Diplexer design notes
- Standard diplexer design is based on singly-terminated Butterworth filters.
[Hits: 2066 | Votes: 7 | Rating: 6.14] - A low cost UHF/VHF duplexer
- Duplexers for dual band radio are usually high pass filter and low pass filter combined in the same box. This circuit is a design within a cost of US$10.
[Hits: 1392 | Votes: 2 | Rating: 4.50] Technical Reference : Filters
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