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THE TRANSMISSION GALLERY
DALNACARDOCH WOOD
| Photos by John P Martin | Page last updated: 2021-09-27 |
| Dalnacardoch Wood was on the update list because the only photograph so far was from Geograph. The first obvious updates are that there has been some very obvious deforestation around the site and that the white AirWave GRP colinear aerials have been replaced with the 4-tier dipole arrays. This site broadcasts BBC Radio Scotland FM (94.2MHz) and nothing else. Polarisation is vertical only and the radiation pattern would appear to be omnidirectional. The TX aerial is a single folded dipole with a large offset from the tower. The RX aerial is a vertically polarised 4-element Yagi receiving from Blair Atholl. Dalnacardoch Wood is one of three relays added in 2010 to improve reception on the A9 trunk road between Pitlochry and Kingussie. The other two are at Crubenmore and Blair Atholl. Combined, these three relays fill the previous 60-mile blackspot along the A9. |
| First sight of the tower in its natural habitat |
| This composite stitch of the whole tower shows all the aerials. This view is of the north-west-facing aspect of the tower. |
| The TX folded dipole has a good offset from the tower so should give pretty much an omnidirectional pattern. |
| Just in case you haven't seen a folded dipole before :) |
| The vertically polarised Yagi receiving the programme feed from Blair Atholl. |
| The only "Unidentified Aerial Object" on the tower is this. Is it a simple RF sniffer to detect tower failure? [Ed]. As this antenna is upward facing, my guess is a GPS receive aerial. |
| Down on the ground, there's a lot of cabin for a relatively simple site |
| Evidence of a previous mast? |
| Evidence of a previous structure base. |
| A discarded carcass of a GRP colinear vertical aerial with a jaybeam label. Presumably this is one of the AirWave TETRA aerials now replaced with the mechanically more robust 4-tier dipole arrays. |
| No site identification other than the usual mobile phone operators |
Blair Atholl | Crubenmore | Kingussie | Pitlochry
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