From northwest San Antonio:
AM Advantages
- Pretty good groundwave propagation during the day. Besides the locals and semi-locals, I can usually hear some weak but copyable 200+ mile Houston, Dallas, and Monterrey area stations.
- At night the band's not too crowded by locals, and stations close to my residence drop their power enough to allow reception on adjacent channels by nulling. All graveyard channels free of locals.
- Being fairly close to the southern U.S. border, I regularly receive some Cuba stations and a lot of Mexico stations. I've logged 22 Mexico states plus D.F.
AM Disadvantages
- I'm three miles from 5 kW KCOR on 1350 and five miles from 10 kW KRDY on 1160. Faint images of both show up in different spots on AM (less so on my better radios) at daytime. Depending on the radio, adjacent bleed from KCOR can extend as much as 500 kHz on either side during the day.
- Although it's great receiving all the Mexico stations because of my location, they block out a fair number of U.S. stations. Not counting locals, there are four frequencies where I've logged zero U.S. stations and a little over a dozen where I have just one U.S. logging.
- During the day there's some RFI from neighboring houses and my own house's wiring, especially aiming north/south. At night it lingers in the lowest AM frequencies and LW. I can alleviate this by going 20 feet out in the front yard or to the side of my house in the back yard near the front gate. I have to be careful at night, though, because I've occasionally seen skunks cruising the area.
FM Advantages
- Decent line of sight reception. Locals, translators, and most semi-locals come in fine.
- Tropo scatter much of the year except when it's really cold and dry. Great tropo from late March to mid-September with openings to south and east TX as well as northeast and north central Mexico. Occasional openings to north central and northeast TX, to LA and further east, and further in to Mexico. Occasional good fall and winter tropo when the weather heats up for a few days.
- Good e-skip. Plenty of openings to the west, southwest, midwest, and southeast U.S. and many areas of Mexico. I've also had a few openings to the mid-atlantic US, the Yucatan peninsula, and northern Central America.
FM Disadvantages
- I'm seven miles from an antenna farm with four 96+ kW stations and two ~70 kW stations, some of them using IBOC, which hampers tropo and e-skip on adjacent frequencies. A good number of my 88.x e-skip catches were made on my car radio at locations in town that are further away from the antenna farm.
- The great tropo sometimes interferes with e-skip openings. Also, the Gulf of Mexico is about 150 miles to my southeast, which means there is nothing to receive from beyond the Texas coast when tropo is coming from the southeast.
- The band is getting more clogged, with about half a dozen new translators and LPs added in the last two years.
I'll be traveling to Anaheim, CA, for a few days in May. Can anyone tell me the DXing advantages/disadvantages of that locale during that timeframe?