Sam's
Microwave Page
G4DDK / W5DDK
Loc: JO02PA
Since November 1997 - 15 years continuous service.
VLNA PDF document. This is a PDF document and is the same as the PDF contained in the EME2012 DVD. All versions of the VLNA are now included in one document. It replaces all previous versions of the VLNA PDF. If you notice any omissions, please let me know. There are a few known errors that I will update next time I access. For now please note. VLNA9 L1 coil details have changed and are shown correctly on page 24, in the section on VLNA9 coil details! L1 should be 12mm long, not 9mm............And, yes, I know there is no figure 17c....yet.
VLNA kits are £50 each.
This price does not include postage and packaging. Please note that UK postal rates increased in April 2012. Rates will depend on where in the world the VLNA has to be shipped and, of course, what quantity you need.
For orders over £100 I recommend International Signed For service, where available.
All band kits are the same price plus postage and packaging.
For payment, I can accept Paypal, cheque (UK bank only), or Bank Transfer.
E-mail me for details. My e-mail address is in the graphic near the foot of this page.
Link to pre-amplifier articles Includes a 'must read' by Sergie, RW3BP
SPF5043Z amplifier. The SPF5043Z amplifier article appeared in the July 2011 issue of Scatterpoint, the newsletter of the UK Microwave Group. This is a slightly updated version of that amplifier article. It includes some new figures and details of the kits that are available from me. For readers in the USA, similar kits are available from WA5VJB.
In October 2012 I received another batch of PCBs. This has allowed me to rationalise the kit types available.
There are now only two PCB types available for the SPFAMP. These both use ARLON 030 board material. The two types are SMA through-board connector and the slightly smaller PCB with cable termination pads. The FR4 types and the edge connector PCBs are discontinued.
Both SPFAMP
kits (either PCB), together with an SPF5043 and
passive components are available from G4DDK at
£12 each. E-mail me for details of post and
packaging and payment details. My e-mail address is
shown in the graphic at the bottom of this page.
New
PGA AMP kits
As mentioned in DUBUS and Radcom here are the PGA Amp kits. Using HEMT MMIC technology the PGA103+ devices were designed for use in cellular base station mast head preamplifiers and feature low noise, broad bandwidth, high dynamic range with excellent input and output return loss. They are usuable from below 30MHz to over 3GHz
Typical performance is 0.5dB noise figure at 144MHz and 0.55dB at 432MHz with input third order intercept (IIP3) of +10 to +12dBm. Gain is typically 25-26dB. Power requirement is +5V at approximately 85mA.
The initial kits offered using the PCB shown. It is 35 x 16 x 0.79mm FR4 material with plated through holes. Kits for the SMA connector version of the PCB and boards with provision for adding input and output RF filter components will be added soon. I already have limited numbers of these boards if you are desperate for an alternative version of the kit.
Each kit contains the device, PCB and passive components. The filtered PCB versions will NOT contain any filter components as these are likely to vary according to intended use.
The kits cost just £12.00 each. Inquire for payment and postage details at the e-mail address shown at the bottom of the page.
New
PGA AMP kits
As mentioned in DUBUS and Radcom here are the PGA Amp kits. Using HEMT MMIC technology the PGA103+ devices were designed for use in cellular base station mast head preamplifiers and feature low noise, broad bandwidth, high dynamic range with excellent input and output return loss. They are usuable from below 30MHz to over 3GHz
Typical performance is 0.5dB noise figure at 144MHz and 0.55dB at 432MHz with input third order intercept (IIP3) of +10 to +12dBm. Gain is typically 25-26dB. Power requirement is +5V at approximately 85mA.
The initial kits offered using the PCB shown. It is 35 x 16 x 0.79mm FR4 material with plated through holes. Kits for the SMA connector version of the PCB and boards with provision for adding input and output RF filter components will be added soon. I already have limited numbers of these boards if you are desperate for an alternative version of the kit.
Each kit contains the device, PCB and passive components. The filtered PCB versions will NOT contain any filter components as these are likely to vary according to intended use.
The kits cost just £12.00 each. Inquire for payment and postage details at the e-mail address shown at the bottom of the page.
WA5VJB PCB antennas
1.3GHz 3 element and 2.4GHz 5 element yagi antennas and 4 element patch antennas for 5.8GHz
Further details and prices by contacting the address in the graphic at the bottom of the page.
Stock is constantly changing. Please inquire for current stock position.
| Contents The UK Microwave Group RSGB Tech stuff WA5VJB Antennas About G4DDK Links G4DDK Blog Spot Change history:- 2/10/2012 VLNA description updated Update on SPFAMP PCB kit availability and PCB antenna availability. DDK2001 now a discontinued item 24/11/12 Further update to VLNA PDF. 9cm details corrected. 24/12/2012 PGA Amplifier details added 15/1/13 PGA Amplifier PDF updated |
Email address
| This page last
given some TLC |
| 15/1/2013 |
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first established November 1997
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