The Pulse on 1348 kHz
Great name for a hosipital radio station.
The signal is very readable 30 miles from the tx.
I'm not sure whether is it on 1350 kHz because it is splattered by Coventry's local radio station, but I get optimised reception on 1350 kHz.
What power are these station running?
The students at Warwick University seem to have lost interest in their station. Even during term time a blank carrier is transmitted on 1251 kHz.
From: "Sterling Times" <2@slewis.biz>
Great name for a hosipital radio station.
The signal is very readable 30 miles from the tx.
I'm not sure whether is it on 1350 kHz because it is splattered by
Coventry's local radio station, but I get optimised reception on 1350
kHz.What power are these station running?
Allegedly 1 watt!
Steve Martin <(Address removed)> said:
From: "Sterling Times" <2@slewis.biz>
Great name for a hosipital radio station.
The signal is very readable 30 miles from the tx.
I'm not sure whether is it on 1350 kHz because it is splattered by
Coventry's local radio station, but I get optimised reception on 1350
kHz.What power are these station running?
Allegedly 1 watt!
You are looking at around 100 watts from their TX to achieve 1 watt EMRP or is it EIRP?
There is probably a 3db difference!
And people say our antenna isn't effiecent (we only run 20 watts!)!
I won't hear it here anyway as there are at least 2 users on that freq that are in my range, not that I am the service area of either of course!
Dave
Allegedly 1 watt!
You are looking at around 100 watts from their TX to achieve 1 watt EMRP or is it EIRP?
Dave, what do they use for aerials?
Sterling Times <2@slewis.biz> said:
Allegedly 1 watt!
You are looking at around 100 watts from their TX to achieve 1 watt EMRP or is it EIRP?
Dave, what do they use for aerials?
If memory serves me right, no more than a 10 metre vertical with top loading, there are a few commercial options out there but some make their own, I was going to direct you to a couple of instances, notably Stoke Mandaville Hospital radio and L&DHR but they both seem to have updated their sites and removed the interesting (to us) technical stuff! So You will have to google a bit.
Dave
Dave Martin <(Address removed)> said:
Sterling Times <2@slewis.biz> said:
Allegedly 1 watt!
You are looking at around 100 watts from their TX to achieve 1 watt EMRP or is it EIRP?
Dave, what do they use for aerials?
If memory serves me right, no more than a 10 metre vertical with top loading, there are a few commercial options out there but some make their own, I was going to direct you to a couple of instances, notably Stoke Mandaville Hospital radio and L&DHR but they both seem to have updated their sites and removed the interesting (to us) technical stuff! So You will have to google a bit.
Dave
Of course there were radio amateurs who transmitted top band mobile so it's reasonably plausible to use loaded whips of one type or another.
I used to have an ATU that could load anything HF into anything. I had considerable success when I matched my KW Vanguard on 27 MHz into an aluminium window frame with considerable success.
I also had a low-end signal generator that could transmit for some miles on medium wave when connected into a long wire without any matching at all.
Radio Cavell's aerial
I did capture this through a Googling. This hosital radio MW aerial looks reasonably substantial. A little better than a long wire strung down the garden.
