Presented are new images of supernova remnants
G114.3+0.3, G116.5+1.1 and G116.9+0.2 (CTB 1) at 408 MHz from the
Canadian Galactic Plane Survey (CGPS). We also use the 1420 MHz
images from the CGPS in a study of their 408–1420 MHz spectral
indices. The flux densities at 408 MHz and 1420 MHz, corrected for
flux densities from compact sources within the SNRs, are 12±6
Jy and 9.8±0.8 Jy for G114.3+0.3, 15.0±1.5 Jy and
10.6±0.6 Jy for G116.5+1.1, 15.0±1.5 Jy and 8.1±0.4 Jy
for G116.9+0.2. The integrated flux density-based spectral indices
(Sν ∝ ν−α) are α=0.16±0.41,
0.28±0.09 and 0.49±0.09 for G114.3+0.3, G116.5+1.1 and
G116.9+0.2, respectively. Their T-T plot-based spectral
indices are 0.68±0.48, 0.28±0.15, and 0.48±0.04, in
agreement with the integrated flux density-based spectral indices.
New flux densities are derived at 2695 MHz which are significantly
larger than previous values. The new 408, 1420 and 2695 MHz flux
densities and published values at other frequencies, where images
are not available, are fitted after correcting for contributions
from compact sources, to derive their multi-frequency spectral
indices.