wa4kfz
Attenuator Project Files WA4KFZ.zipAttenuator design files. The schematic and PCB were designed using DipTrace.x-zip-compressed - 634.72 kB - 09/29/2021 at 16:28 |
|
|
MarkTest.xlsxBOMsheet - 14.68 kB - 09/29/2021 at 16:25 |
|
|
Figure 10_Belt worn concept of operation for the Foxhunt Variable Attenuator.jpgConcept of operation.JPEG Image - 2.26 MB - 09/29/2021 at 16:22 |
|
|
Figure 9_Maximum attenuation vs. frequency for UHF operation..PNGUHF attenuation performance.Portable Network Graphics (PNG) - 19.29 kB - 09/29/2021 at 16:21 |
|
|
Figure 8_Maximum attenuation vs. frequency for VHF operation.PNGVHF attenuation performance.Portable Network Graphics (PNG) - 19.90 kB - 09/29/2021 at 16:21 |
|
|
Figure 7_The fully assembled Foxhunt Variable Attenuator.jpgAssembled attenuator.JPEG Image - 2.33 MB - 09/29/2021 at 16:21 |
|
|
Figure 6_PCB Layout Bottom View.jpgPCB bottom view.JPEG Image - 1.76 MB - 09/29/2021 at 16:21 |
|
|
Figure 5_PCB Layout Top View.jpgPCB top view.JPEG Image - 1.68 MB - 09/29/2021 at 16:20 |
|
|
Figure 4_Foxhunt Variable Attenuator Schematic Diagram.pdfSchematic diagram.Adobe Portable Document Format - 104.19 kB - 09/29/2021 at 16:20 |
|
|
Figure 3_Foxhunt Variable Attenuator Block Diagram.PNGFunctional block diagram.Portable Network Graphics (PNG) - 51.93 kB - 09/29/2021 at 16:20 |
|
|
Figure 2_RF Switch Functional Diagram.PNGRF bypass switch.Portable Network Graphics (PNG) - 16.64 kB - 09/29/2021 at 16:20 |
|
|
Figure 1_BAP70Q Attenuation Curve vs Control Voltage_datasheet excerpt.PNGAnalog attenuator IC behavior.Portable Network Graphics (PNG) - 33.06 kB - 09/29/2021 at 16:19 |
|
|
Foxhunt Variable Attenuator_Braunstein_WA4KFZ_PDF.pdfArticle written to describe the attenuator.Adobe Portable Document Format - 851.87 kB - 09/29/2021 at 16:18 |
|
|
Foxhunt Variable Attenuator
A belt-worn variable attenuator for amateur radio foxhunt applications. Covers VHF/UHF frequencies with 80dB attenuation.