www.chavfreezone.me.uk

blog

Vicki 332 February 23, 2022
1 Hour, 3 microwave bands! September 2, 2013
Shack Refurb' 2013 August 1, 2013
Restoring two Vibroplex 'Bugs' February 1, 2013
GM4CXM gets 13cm! July 10, 2009
DB6NT 1.3GHz Transverter MKU 13G2B kit July 1, 2009
A forced re-vamp of the 4m Transverter May 1, 2009
The GM0UHC Brand Image December 1, 2008
13cm Transverter for GM0USI September 20, 2008
23cm Consolidation September 10, 2008
Not a 23cm PA! March 20, 2008
A Replacement Soundcard Interface February 10, 2008
A better 4m PA November 10, 2007
A High Power UHF Power Meter September 10, 2007
GPS-Locked 9cm Transverter August 10, 2007
Chasing an itch May 25, 2007
A GPS Disciplined OCXO May 10, 2007
MKII 9cm Transverter February 5, 2007
GM0UHC is back on 4m October 10, 2006
First forays onto 9cm September 10, 2006
Keeping the Prime Mover Alive July 29, 2006
Spectrian PA for 13cm July 26, 2006
Upgrading the 23cm Transverter May 27, 2006
18/24 Vertical March 15, 2006
Half-Size G5RV April 15, 2005
Shack Revision 2004 December 1, 2004
Transverters re-built November 1, 2003
Winch Cable Woes July 1, 2003
The 'shack' in 2002 January 1, 2002
300W HF Amplifier March 1, 2001
December 2000 December 1, 2000
GM8LWR August 1, 1976
In the beginning December 25, 1970

racal

How it might have been March 1, 2024
RA117A N0959 February 13, 2024
Power Amplifier Type MM420 October 25, 2023
Poor Man's MA350 July 4, 2022
The MA79 Transmitter Drive Unit May 30, 2022
Using the Rigol DSA815-TG to align filters in the RA17 series March 17, 2021
The MA3752 driving a TA3762 PA January 18, 2021
RA17 MKII Ser. N2751 December 12, 2020
RA17 L-C Filter problem solved! August 25, 2020
A new 1MHz Osc. for the RA1217 March 19, 2020
RA17 MKI Ser. N54 November 30, 2019
The MA3772 1KW HF Combiner September 18, 2019
The TA3762 250W Linear Amplifier September 17, 2019
The RA3702 Dual HF Receiver September 17, 2019
The MA3752 Dual HF Drive Unit September 16, 2019
The Racal RA121 September 5, 2019
Collins R-390/URR versus Racal RA17L September 1, 2018
The RA3712 Dual HF Receiver April 4, 2018
The RA3701 HF Receiver June 22, 2017
The RA3700 Series June 12, 2017
The Racal RA63 February 16, 2017
The Racal RA98 February 6, 2017
Racal Sideband Adapters February 1, 2017
The Racal RA1792 September 14, 2016
The Racal RA37A November 23, 2015
The SA97 Wobbulator November 9, 2015
Racal MA251 Buffer Amplifier September 8, 2015
The Racal RA137A August 6, 2015
The Racal RA117E January 21, 2015
Is your RA17 a MKI or MKII? February 15, 2013
Custom Interface Unit November 1, 2012
ISB Adapter type RA218 October 1, 2012
The Racal RA117 September 1, 2012
Racal MA.259 Ser. No. 1 July 1, 2011
The Racal RA1217 October 1, 2010
Restoration of another MKI Racal RA17 March 26, 2009
The Wadley Loop Explained March 1, 2009
Restoration of a MKI Racal RA17 January 1, 2009

t1154r1155

Yet another resurrected R1155 April 1, 2022
A much-modified R1155 September 30, 2021
Re-Stuffing Capacitors October 14, 2020
R1155 PSU Addendum March 30, 2020
R.1155L Ser. 0138 October 8, 2014
R.1155E Ser. 69428 April 16, 2014
Spanish A.D.8882B January 20, 2013
A Replica Screwdriver for the T1154 November 20, 2012
Another R1155 Restored June 6, 2012
A Microphone Pre-Amplifier for the T1154 February 10, 2012
A Power Supply for the T1154/R1155 January 20, 2012
Transmitter Type T.1154M Ser. 86102 November 20, 2011
A Home-Made J-Switch for the T.1154 November 10, 2011
R1155 Ser. 40696 November 1, 2011
Transmitter Type T.1154M Ser. 85660 April 1, 2010
Restoring an R1155 Receiver February 1, 2010