LA2YUA – RF and related projects

I try an epoxy technique to repair the front panel attachment points in the Icom IC-V200T.

I acquired several Icom IC-H12 radios, and some IC-H16Ts including original issue Service Manuals for them. Here are links to some scanned documentation. The H16T service manual is widely available, but I scanned the foil pages since Icom official scans are useless there. Several notes on adjustments and mods Note:…

This page has some info on the MC349 VCXO, that has been available on eBay in large quantities at low cost.

To investigate a simple way of generating local oscillators for my UHF transmitter, the CDCR83 was put on a 4 layer board and fed with frequencies from 10-150 MHz at various multiplication settings. As usual a bag of these was found on eBay and as such there was some incentive to find a use for them.

Background: a set of 110.51 MHz filters were acquired on eBay per usual, and I ended up with around 400 of them. Part number was 110E39. No data sheet was available, though a potentially related data sheet for 90 MHz filters in the same package was available from NDK. Here…

The 8802A transmitter is a 50W continuous 450 MHz modulator, exciter and PA with good performance.

The 8801A receiver is very similar to the F955 receiver, so a lot of the technical documentation can be referenced: http://www.jancorver.org/en/ombouw/ericsson/f955/

The main manual is in Dutch, but it’s still somewhat understandable due to the excellent diagrams drawn by PA0IB.

This is an overview of my documentation for the Magnetic AB/Ericsson NMT 450 base station transceiver system.