Radio Amateur 01-1998

Tranzistor Ruh60

On the cover Carefully installed antennas and cables let Andrew Moore NV1B enjoy mobile CW and 2 meter FM without the distractions of safety hazards or messy looking wires. The choice of multiple narrowbanded 40 meter resonators and a trunk-mounted coax switch provide good bandwidth while eliminating high wind loads and antenna tuners. In classic OM form. NV1B sneaked out of the house on the morning of his wedding day to capture a little of New Hampshire's famous fail foliage atop Stratham Hitl...

Circle On Reader Service Card

73 Amateur Radio Today January 1998 51 Tins meant installing the program and going through the configuration from scratch. I should have kept notes a lesson in hindsight. It was the end of a relatively satisfying session and time to get away from the computer for a bit. As 1 sat back and thought about the dilemma, 1 remembered seeing other software available. If it was necessary lo start over, perhaps it would he just as well to stretch my learning capacity and look 1 went ro an HF-FAX Web site...

Upgrading the

Add this simple resistance meter to your MFJ antenna analyzer Mike Walker KG5CM 11102 Sharpview Houston TX 77072 Once I used a borrowed MFJ-259 antenna analyzer, I knew I had to have one. it was a terrific little unit that did everything advertised. For hams not familiar with it, the 259 is a signal generator with a frequency counter and a return loss bridge all in one box. You can tune antennas and tuners, adjust tuning stubs, use it as a grid-dip meter (with optional coils), and do other...

Chcle On Reader Service Card

This would be indicative of the oscillator spec that states instability to be 2 Hz per MH . We read ihe frequency to be 20 H h low in frequency, with a spec of 2 Hz per MHz. Translating that to It MH would he 2 Hz times 10 MHz or 20 Hz and that could be either high or tow. Quite an error. If you were to read a frequency of 145 MHz with such a counter, whose lime base had a 2 Hz per MHz error, the final error translated lo 145 MHz would be almost 300 Hz off frequency. E alualing the frequency...

Electronic Construction from A to Z Part

Everything you wanted to know about building stuff but were afraid to ask If you've been following along with this series of articles, you will have a brand-new, working, VM-110 AC voltage monitor (see end of text for purchasing information)f ready to install in some sort of enclosure. That's what we're going to talk about this month installing projects in enclosures and finishing up the project so that you will have a useful, attractive device that you built yourself When you have built a few...

Low Noise Receiver Preamps

Rated for continuous duty 2-3W output Wired tested . 189 (includes TCXO) Inquire about models for higher frequencies. * TA51 for 6M, 2M, 220 MHz kit 99, w tS169. * TA4511 for 420-475 MHz. kit 99, w t 169. * TA901 for 902-923 MHz (0.5W out) w t S169. Output levels from 10W1o 100W Starting at 99. * R100 VHF FM RCVRS Very sensitive - 0,1 5jjV. Superb selectivity - both crystal and ceramic IF filters, 100 dB down at 12 KHz, best available anywhere, flutter-proof squelch. For 46-54, 72-76, 140*175,...